@article{Xu2022,
author = {Xu, Ying},
title = {Study on transport mechanism of m5C-edited mRNAs},
pages = {133},
year = {2022},
language = {en}
}
@article{ReegStriglJeltsch2022,
author = {Reeg, Jette and Strigl, Lea and Jeltsch, Florian},
title = {Agricultural buffer zone thresholds to safeguard functional bee diversity},
series = {Ecology and Evolution},
volume = {12},
journal = {Ecology and Evolution},
edition = {3},
publisher = {Wiley Online Library},
address = {Hoboken, New Jersey, USA},
issn = {2045-7758},
doi = {10.1002/ece3.8748},
pages = {1 -- 17},
year = {2022},
abstract = {Wild bee species are important pollinators in agricultural landscapes. However, population decline was reported over the last decades and is still ongoing. While agricultural intensification is a major driver of the rapid loss of pollinating species, transition zones between arable fields and forest or grassland patches, i.e., agricultural buffer zones, are frequently mentioned as suitable mitigation measures to support wild bee populations and other pollinator species. Despite the reported general positive effect, it remains unclear which amount of buffer zones is needed to ensure a sustainable and permanent impact for enhancing bee diversity and abundance. To address this question at a pollinator community level, we implemented a process-based, spatially explicit simulation model of functional bee diversity dynamics in an agricultural landscape. More specifically, we introduced a variable amount of agricultural buffer zones (ABZs) at the transition of arable to grassland, or arable to forest patches to analyze the impact on bee functional diversity and functional richness. We focused our study on solitary bees in a typical agricultural area in the Northeast of Germany. Our results showed positive effects with at least 25\% of virtually implemented agricultural buffer zones. However, higher amounts of ABZs of at least 75\% should be considered to ensure a sufficient increase in Shannon diversity and decrease in quasi-extinction risks. These high amounts of ABZs represent effective conservation measures to safeguard the stability of pollination services provided by solitary bee species. As the model structure can be easily adapted to other mobile species in agricultural landscapes, our community approach offers the chance to compare the effectiveness of conservation measures also for other pollinator communities in future.},
language = {en}
}
@article{KaunathEccard2022,
author = {Kaunath, Vera and Eccard, Jana},
title = {Light Attraction in Carabid Beetles},
series = {Frontiers in Ecology and Evolution},
volume = {10},
journal = {Frontiers in Ecology and Evolution},
publisher = {Frontiers Media},
address = {Lausanne, Schweiz},
issn = {2296-701X},
doi = {10.3389/fevo.2022.751288},
pages = {10},
year = {2022},
abstract = {Artificial light at night (ALAN) is altering the behaviour of nocturnal animals in a manifold of ways. Nocturnal invertebrates are particularly affected, due to their fatal attraction to ALAN. This selective pressure has the potential to reduce the strength of the flight-to-light response in insects, as shown recently in a moth species. Here we investigated light attraction of ground beetles (Coleoptera: Carabidae).We compared among animals (three genera) from a highly light polluted (HLP) grassland in the centre of Berlin and animals collected at a low-polluted area in a Dark Sky Reserve (DSR), captured using odour bait. In an arena setting tested at night time, HLP beetles (n = 75 across all genera) showed a reduced attraction towards ALAN. Tested during daytime, HLP beetles were less active in an open field test (measured as latency to start moving), compared to DSR (n = 143). However, we did not observe a reduced attraction towards ALAN within the species most common at both sides, Calathus fuscipes (HLP = 37, DSR = 118 individuals) indicating that not all species may be equally affected by ALAN. Reduced attraction to ALAN in urban beetles may either be a result of phenotypic selection in each generation removing HLP individuals that are attracted to light, or an indication for ongoing evolutionary differentiation among city and rural populations in their light response. Reduced attraction to light sources may directly enhance survival and reproductive success of urban individuals. However, decrease in mobility may negatively influence dispersal, reproduction and foraging success, highlighting the selective pressure that light pollution may have on fitness, by shaping and modifying the behaviour of insects.},
language = {en}
}
@article{TiedemannIobbiNivolLeimkuehler2022,
author = {Tiedemann, Kim and Iobbi-Nivol, Chantal and Leimk{\"u}hler, Silke},
title = {The Role of the Nucleotides in the Insertion of the bis-Molybdopterin Guanine Dinucleotide Cofactor into apo-Molybdoenzymes},
series = {Molecules},
volume = {27},
journal = {Molecules},
edition = {9},
publisher = {MDPI},
address = {Basel, Schweiz},
issn = {1420-3049},
doi = {10.3390/molecules27092993},
pages = {1 -- 15},
year = {2022},
abstract = {The role of the GMP nucleotides of the bis-molybdopterin guanine dinucleotide (bis-MGD) cofactor of the DMSO reductase family has long been a subject of discussion. The recent characterization of the bis-molybdopterin (bis-Mo-MPT) cofactor present in the E. coli YdhV protein, which differs from bis-MGD solely by the absence of the nucleotides, now enables studying the role of the nucleotides of bis-MGD and bis-MPT cofactors in Moco insertion and the activity of molybdoenzymes in direct comparison. Using the well-known E. coli TMAO reductase TorA as a model enzyme for cofactor insertion, we were able to show that the GMP nucleotides of bis-MGD are crucial for the insertion of the bis-MGD cofactor into apo-TorA.},
language = {en}
}
@article{WeithoffBell2022,
author = {Weithoff, Guntram and Bell, Elanor Margaret},
title = {Complex Trophic Interactions in an Acidophilic Microbial Community},
series = {Microorganisms},
volume = {10},
journal = {Microorganisms},
edition = {7},
publisher = {MDPI},
address = {Basel, Schweiz},
issn = {2076-2607},
doi = {10.3390/microorganisms10071340},
pages = {1 -- 10},
year = {2022},
abstract = {Extreme habitats often harbor specific communities that differ substantially from non-extreme habitats. In many cases, these communities are characterized by archaea, bacteria and protists, whereas the number of species of metazoa and higher plants is relatively low. In extremely acidic habitats, mostly prokaryotes and protists thrive, and only very few metazoa thrive, for example, rotifers. Since many studies have investigated the physiology and ecology of individual species, there is still a gap in research on direct, trophic interactions among extremophiles. To fill this gap, we experimentally studied the trophic interactions between a predatory protist (Actinophrys sol, Heliozoa) and its prey, the rotifers Elosa woralli and Cephalodella sp., the ciliate Urosomoida sp. and the mixotrophic protist Chlamydomonas acidophila (a green phytoflagellate, Chlorophyta). We found substantial predation pressure on all animal prey. High densities of Chlamydomonas acidophila reduced the predation impact on the rotifers by interfering with the feeding behaviour of A. sol. These trophic relations represent a natural case of intraguild predation, with Chlamydomonas acidophila being the common prey and the rotifers/ciliate and A. sol being the intraguild prey and predator, respectively. We further studied this intraguild predation along a resource gradient using Cephalodella sp. as the intraguild prey. The interactions among the three species led to an increase in relative rotifer abundance with increasing resource (Chlamydomonas) densities. By applying a series of laboratory experiments, we revealed the complexity of trophic interactions within a natural extremophilic community.},
language = {en}
}
@article{MiticGrafeBatsiosetal.2022,
author = {Mitic, Kristina and Grafe, Marianne and Batsios, Petros and Meyer, Irene},
title = {Partial Disassembly of the Nuclear Pore Complex Proteins during Semi-Closed Mitosis in Dictyostelium discoideum},
series = {Cells},
volume = {11},
journal = {Cells},
number = {3},
publisher = {MDPI},
address = {Basel},
issn = {2073-4409},
doi = {10.3390/cells11030407},
pages = {14},
year = {2022},
abstract = {Dictyostelium cells undergo a semi-closed mitosis, during which the nuclear envelope (NE) persists; however, free diffusion between the cytoplasm and the nucleus takes place. To permit the formation of the mitotic spindle, the nuclear envelope must be permeabilized in order to allow diffusion of tubulin dimers and spindle assembly factors into the nucleus. In Aspergillus, free diffusion of proteins between the cytoplasm and the nucleus is achieved by a partial disassembly of the nuclear pore complexes (NPCs) prior to spindle assembly. In order to determine whether this is also the case in Dictyostelium, we analysed components of the NPC by immunofluorescence microscopy and live cell imaging and studied their behaviour during interphase and mitosis. We observed that the NPCs are absent from the contact area of the nucleoli and that some nucleoporins also localize to the centrosome and the spindle poles. In addition, we could show that, during mitosis, the central FG protein NUP62, two inner ring components and Gle1 depart from the NPCs, while all other tested NUPs remained at the NE. This leads to the conclusion that indeed a partial disassembly of the NPCs takes place, which contributes to permeabilisation of the NE during semi-closed mitosis.},
language = {en}
}
@article{ArnoldRutschmann2022,
author = {Arnold, Patrick and Rutschmann, Sereina},
title = {UCE sequencing-derived mitogenomes reveal the timing of mitochondrial replacement in Malagasy shrew tenrecs (Afrosoricida, Tenrecidae, Microgale)},
series = {Mammalian biology = Zeitschrift f{\"u}r S{\"a}ugetierkunde},
volume = {102},
journal = {Mammalian biology = Zeitschrift f{\"u}r S{\"a}ugetierkunde},
number = {2},
publisher = {Springer},
address = {Heidelberg},
issn = {1616-5047},
doi = {10.1007/s42991-022-00246-2},
pages = {531 -- 536},
year = {2022},
abstract = {Malagasy shrew tenrecs (Microgale) have increasingly been used to study speciation genetics over the last years. A previous study recently uncovered gene flow between the Shrew-toothed shrew tenrec (M. soricoides) and sympatric southern population of the Pale shrew tenrec (M. fotsifotsy). This gene flow has been suggested to be accompanied by complete mitochondrial replacement in M. fotsifotsy. To explore the temporal framework of this replacement, we assembled mitogenomes from publicly available sequencing data of ultra-conserved elements. We were able to assemble complete and partial mitogenomes for 19 specimens from five species of shrew tenrecs, which represents a multifold increase in mitogenomic resources available for all tenrecs. Phylogenetic inferences and sequence simulations support the close relationship between the mitochondrial lineages of M. soricoides and the southern population of M. fotsifotsy. Based on the nuclear divergence of northern and southern populations of M. fotsifotsy and the mitochondrial divergence between the latter and M. soricoides, there was a mean time window for replacement of similar to 350,000 years. This timeframe implies that the effective size of the ancestral M. fotsifotsy southern population was less 70,000.},
language = {en}
}
@article{Heinze2022,
author = {Heinze, Johannes},
title = {Correction to: Heinze, Johannes: Herbivory by aboveground insects impacts plant root morphological traits. - Plant Ecology. - 221 (2020). - S. 725 - 732},
series = {Plant ecology : an international journal},
volume = {223},
journal = {Plant ecology : an international journal},
number = {115},
publisher = {Springer},
address = {Dordrecht},
issn = {1385-0237},
doi = {10.1007/s11258-021-01194-6},
year = {2022},
language = {en}
}
@article{KathGaedkevanVelzen2022,
author = {Kath, Nadja Jeanette and Gaedke, Ursula and van Velzen, Ellen},
title = {The double-edged sword of inducible defences: costs and benefits of maladaptive switching from the individual to the community level},
series = {Scientific Reports},
volume = {12},
journal = {Scientific Reports},
publisher = {Springer Nature},
address = {London},
issn = {2045-2322},
doi = {10.1038/s41598-022-13895-7},
pages = {1 -- 14},
year = {2022},
abstract = {Phenotypic plasticity can increase individual fitness when environmental conditions change over time. Inducible defences are a striking example, allowing species to react to fluctuating predation pressure by only expressing their costly defended phenotype under high predation risk. Previous theoretical investigations have focused on how this affects predator-prey dynamics, but the impact on competitive outcomes and broader community dynamics has received less attention. Here we use a small food web model, consisting of two competing plastic autotrophic species exploited by a shared consumer, to study how the speed of inducible defences across three trade-off constellations affects autotroph coexistence, biomasses across trophic levels, and temporal variability. Contrary to the intuitive idea that faster adaptation increases autotroph fitness, we found that higher switching rates reduced individual fitness as it consistently provoked more maladaptive switching towards undefended phenotypes under high predation pressure. This had an unexpected positive impact on the consumer, increasing consumer biomass and lowering total autotroph biomass. Additionally, maladaptive switching strongly reduced autotroph coexistence through an emerging source-sink dynamic between defended and undefended phenotypes. The striking impact of maladaptive switching on species and food web dynamics indicates that this mechanism may be of more critical importance than previously recognized.},
language = {en}
}
@article{SchlaegelMaedlow2022,
author = {Schl{\"a}gel, Ulrike E. and M{\"a}dlow, Wolfgang},
title = {All-season space use by non-native resident Mandarin Ducks (Aix galericulata) in northeastern Germany},
series = {Journal of ornithology / publ. by Deutsche Ornithologen-Gesellschaft},
volume = {163},
journal = {Journal of ornithology / publ. by Deutsche Ornithologen-Gesellschaft},
number = {1},
publisher = {Springer},
address = {Berlin},
issn = {2193-7192},
doi = {10.1007/s10336-021-01932-7},
pages = {71 -- 82},
year = {2022},
abstract = {Patterns of space use are often subject to large temporal and individual-level variation, due to seasonality in behaviour and environmental conditions as well as age- or sex-specific needs. Especially in temperate regions, seasonality likely influences space use even in non-migratory birds. In waterfowl of the family Anatidae, however, few studies have analyzed space use of the same individuals across the full annual cycle. We used a resident population of Mandarin Ducks (Aix galericulata) in northeast Germany to study their year-round space use in relation to season, sex, and age. We marked 172 birds with colour rings and surveyed relevant water bodies for re-encounters for several years. As space-use patterns we derived home ranges from minimum convex polygons and the number of water bodies used by individual birds. Our analysis revealed that individuals shifted their space use between seasons, in particular extending their home ranges during the non-breeding season. Between years, in contrast, birds tended to show season-specific site fidelity. Sex differences were apparent during both breeding and non-breeding season, males consistently having larger home ranges and using slightly more water bodies. No difference was found between first-year and adult birds. Our study demonstrates that mark-resighting can provide valuable information about space use in species with suitable behaviour and readily accessible habitat. In such cases, it may be a valid alternative to more expensive GPS-tracking or short-term manual radio telemetry, particularly within citizen-science projects.},
language = {en}
}
@article{NakamuraSteupColleonietal.2022,
author = {Nakamura, Yasunori and Steup, Martin and Colleoni, Christophe and Iglesias, Alberto A. and Bao, Jinsong and Fujita, Naoko and Tetlow, Ian},
title = {Molecular regulation of starch metabolism},
series = {Plant molecular biology : an international journal of fundamental research and genetic engineering},
volume = {108},
journal = {Plant molecular biology : an international journal of fundamental research and genetic engineering},
number = {4-5},
publisher = {Springer},
address = {Dordrecht},
issn = {0167-4412},
doi = {10.1007/s11103-022-01253-0},
pages = {289 -- 290},
year = {2022},
language = {en}
}
@article{KathGaedkevanVelzen2022,
author = {Kath, Nadja Jeanette and Gaedke, Ursula and van Velzen, Ellen},
title = {The double-edged sword of inducible defences: costs and benefits of maladaptive switching from the individual to the community level},
series = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
journal = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
number = {1288},
issn = {1866-8372},
doi = {10.25932/publishup-57200},
url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-572006},
pages = {14},
year = {2022},
abstract = {Phenotypic plasticity can increase individual fitness when environmental conditions change over time. Inducible defences are a striking example, allowing species to react to fluctuating predation pressure by only expressing their costly defended phenotype under high predation risk. Previous theoretical investigations have focused on how this affects predator-prey dynamics, but the impact on competitive outcomes and broader community dynamics has received less attention. Here we use a small food web model, consisting of two competing plastic autotrophic species exploited by a shared consumer, to study how the speed of inducible defences across three trade-off constellations affects autotroph coexistence, biomasses across trophic levels, and temporal variability. Contrary to the intuitive idea that faster adaptation increases autotroph fitness, we found that higher switching rates reduced individual fitness as it consistently provoked more maladaptive switching towards undefended phenotypes under high predation pressure. This had an unexpected positive impact on the consumer, increasing consumer biomass and lowering total autotroph biomass. Additionally, maladaptive switching strongly reduced autotroph coexistence through an emerging source-sink dynamic between defended and undefended phenotypes. The striking impact of maladaptive switching on species and food web dynamics indicates that this mechanism may be of more critical importance than previously recognized.},
language = {en}
}
@article{AgnePreickStraubeetal.2022,
author = {Agne, Stefanie and Preick, Michaela and Straube, Nicolas and Hofreiter, Michael},
title = {Simultaneous Barcode Sequencing of Diverse Museum Collection Specimens Using a Mixed RNA Bait Set},
series = {Frontiers in Ecology and Evolution},
volume = {10},
journal = {Frontiers in Ecology and Evolution},
publisher = {Frontiers Media S.A.},
address = {Lausanne, Schweiz},
issn = {2296-701X},
doi = {10.3389/fevo.2022.909846},
pages = {5},
year = {2022},
abstract = {A growing number of publications presenting results from sequencing natural history collection specimens reflect the importance of DNA sequence information from such samples. Ancient DNA extraction and library preparation methods in combination with target gene capture are a way of unlocking archival DNA, including from formalin-fixed wet-collection material. Here we report on an experiment, in which we used an RNA bait set containing baits from a wide taxonomic range of species for DNA hybridisation capture of nuclear and mitochondrial targets for analysing natural history collection specimens. The bait set used consists of 2,492 mitochondrial and 530 nuclear RNA baits and comprises specific barcode loci of diverse animal groups including both invertebrates and vertebrates. The baits allowed to capture DNA sequence information of target barcode loci from 84\% of the 37 samples tested, with nuclear markers being captured more frequently and consensus sequences of these being more complete compared to mitochondrial markers. Samples from dry material had a higher rate of success than wet-collection specimens, although target sequence information could be captured from 50\% of formalin-fixed samples. Our study illustrates how efforts to obtain barcode sequence information from natural history collection specimens may be combined and are a way of implementing barcoding inventories of scientific collection material.},
language = {en}
}
@article{ApriyantoAjambang2022,
author = {Apriyanto, Ardha and Ajambang, Walter},
title = {Transcriptomic dataset for early inflorescence stages of oil palm in response to defoliation stress},
series = {Data in Brief},
volume = {41},
journal = {Data in Brief},
publisher = {Elsevier},
address = {Amsterdam},
issn = {2352-3409},
doi = {10.1016/j.dib.2022.107914},
pages = {6},
year = {2022},
abstract = {Oil palm breeding and seed development have been hindered due to the male parent's incapacity to produce male inflorescence as a source of pollen under normal conditions. On the other hand, a young oil palm plantation has a low pollination rate due to a lack of male flowers. These are the common problem of sex ratio in the oil palm industry. Nevertheless, the regulation of sex ratio in oil palm plants is a complex mechanism and remains an open question until now. Researchers have previously used complete defoliation to induce male inflorescences, but the biological and molecular mechanisms underlying this morphological change have yet to be discovered. Here, we present an RNA-seq dataset from three early stages of an oil palm inflorescence under normal conditions and complete defoliation stress. This transcriptomic dataset is a valuable resource to improve our understanding of sex determination mechanisms in oil palm inflorescence.},
language = {en}
}
@article{ParrySchlaegelTiedemannetal.2022,
author = {Parry, Victor and Schl{\"a}gel, Ulrike E. and Tiedemann, Ralph and Weithoff, Guntram},
title = {Behavioural Responses of Defended and Undefended Prey to Their Predator},
series = {Biology},
volume = {11},
journal = {Biology},
number = {8},
publisher = {MDPI},
address = {Basel, Schweiz},
issn = {2079-7737},
doi = {10.3390/biology11081217},
pages = {14},
year = {2022},
abstract = {Predation is a strong species interaction causing severe harm or death to prey. Thus, prey species have evolved various defence strategies to minimize predation risk, which may be immediate (e.g., a change in behaviour) or transgenerational (morphological defence structures). We studied the behaviour of two strains of a rotiferan prey (Brachionus calyciflorus) that differ in their ability to develop morphological defences in response to their predator Asplanchna brightwellii. Using video analysis, we tested: (a) if two strains differ in their response to predator presence and predator cues when both are undefended; (b) whether defended individuals respond to live predators or their cues; and (c) if the morphological defence (large spines) per se has an effect on the swimming behaviour. We found a clear increase in swimming speed for both undefended strains in predator presence. However, the defended specimens responded neither to the predator presence nor to their cues, showing that they behave indifferently to their predator when they are defended. We did not detect an effect of the spines on the swimming behaviour. Our study demonstrates a complex plastic behaviour of the prey, not only in the presence of their predator, but also with respect to their defence status.},
language = {en}
}
@article{WicaksonoBraunBernhardtetal.2022,
author = {Wicaksono, Wisnu Adi and Braun, Maria and Bernhardt, J{\"o}rg and Riedel, Katharina and Cernava, Tomislav and Berg, Gabriele},
title = {Trade-off for survival},
series = {Environment international : a journal of science, technology, health, monitoring and policy},
volume = {168},
journal = {Environment international : a journal of science, technology, health, monitoring and policy},
publisher = {Elsevier Science},
address = {Amsterdam [u.a.]},
issn = {1873-6750},
doi = {10.1016/j.envint.2022.107474},
pages = {13},
year = {2022},
abstract = {The environmental micmbiota is increasingly exposed to chemical pollution. While the emergence of multi-resistant pathogens is recognized as a global challenge, our understanding of antimicrobial resistance (AMR) development from native microbiomes and the risks associated with chemical exposure is limited. By implementing a lichen as a bioindicator organism and model for a native microbiome, we systematically examined responses towards antimicrobials (colistin, tetracycline, glyphosate, and alkylpyrazine). Despite an unexpectedly high resilience, we identified potential evolutionary consequences of chemical exposure in terms of composition and functioning of native bacterial communities. Major shifts in bacterial composition were observed due to replacement of naturally abundant taxa; e.g. Chthoniobacterales by Pseudomonadales. A general response, which comprised activation of intrinsic resistance and parallel reduction of metabolic activity at RNA and protein levels was deciphered by a multi-omics approach. Targeted analyses of key taxa based on metagenome-assembled genomes reflected these responses but also revealed diversified strategies of their players. Chemical-specific responses were also observed, e.g., glyphosate enriched bacterial r-strategists and activated distinct ARGs. Our work demonstrates that the high resilience of the native micmbiota toward antimicrobial exposure is not only explained by the presence of antibiotic resistance genes but also adapted metabolic activity as a trade-off for survival. Moreover, our results highlight the importance of native microbiomes as important but so far neglected AMR reservoirs. We expect that this phenomenon is representative for a wide range of environmental microbiota exposed to chemicals that potentially contribute to the emergence of antibiotic-resistant bacteria from natural environments.},
language = {en}
}
@article{PawlakNoetzelDragoetal.2022,
author = {Pawlak, Julia and Noetzel, Dominique Christian and Drago, Claudia and Weithoff, Guntram},
title = {Assessing the toxicity of polystyrene beads and silica particles on the microconsumer Brachionus calyciflorus at different timescales},
series = {Frontiers in Environmental Science},
journal = {Frontiers in Environmental Science},
publisher = {Frontiers},
address = {Lausanne, Schweiz},
issn = {2296-665X},
doi = {10.3389/fenvs.2022.955425},
pages = {1 -- 11},
year = {2022},
abstract = {Environmental pollution by microplastics has become a severe problem in terrestrial and aquatic ecosystems and, according to actual prognoses, problems will further increase in the future. Therefore, assessing and quantifying the risk for the biota is crucial. Standardized short-term toxicological procedures as well as methods quantifying potential toxic effects over the whole life span of an animal are required. We studied the effect of the microplastic polystyrene on the survival and reproduction of a common freshwater invertebrate, the rotifer Brachionus calyciflorus, at different timescales. We used pristine polystyrene spheres of 1, 3, and 6 µm diameter and fed them to the animals together with food algae in different ratios ranging from 0 to 50\% nonfood particles. As a particle control, we used silica to distinguish between a pure particle effect and a plastic effect. After 24 h, no toxic effect was found, neither with polystyrene nor with silica. After 96 h, a toxic effect was detectable for both particle types. The size of the particles played a negligible role. Studying the long-term effect by using life table experiments, we found a reduced reproduction when the animals were fed with 3 µm spheres together with similar-sized food algae. We conclude that the fitness reduction is mainly driven by the dilution of food by the nonfood particles rather than by a direct toxic effect.},
language = {en}
}
@article{JaenickeGoddardSteinetal.2022,
author = {J{\"a}nicke, Clemens and Goddard, Adam and Stein, Susanne and Steinmann, Horst-Henning and Lakes, Tobia and Nendel, Claas and M{\"u}ller, Daniel},
title = {Field-level land-use data reveal heterogeneous crop sequences with distinct regional differences in Germany},
series = {European journal of agronomy},
volume = {141},
journal = {European journal of agronomy},
publisher = {Elsevier},
address = {Amsterdam},
issn = {1161-0301},
doi = {10.1016/j.eja.2022.126632},
pages = {12},
year = {2022},
abstract = {Crop cultivation intensifies globally, which can jeopardize biodiversity and the resilience of cropping systems. We investigate changes in crop rotations as one intensification metric for half of the croplands in Germany with annual field-level land-use data from 2005 to 2018. We proxy crop rotations with crop sequences and compare how these sequences changed among three seven-year periods. The results reveal an overall high diversity of crop sequences in Germany. Half of the cropland has crop sequences with four or more crops within a seven-year period, while continuous cultivation of the same crop is present on only 2\% of the cropland. Larger farms tend to have more diverse crop sequences and organic farms have lower shares of cereal crops. In three federal states, crop rotations became less structurally diverse over time, i.e. the number of crops and the number of changes between crops decreased. In one state, structural diversity increased and the proportion of monocropping decreased. The functional diversity of the crop sequences, which measures the share of winter and spring crops as well as the share of leaf and cereal crops per sequence, remained largely stable. Trends towards cereal-or leaf -crop dominated sequences varied between the states, and no clear overall dynamic could be observed. However, the share of winter crops per sequence decreased in all four federal states. Quantifying the dynamics of crop sequences at the field level is an important metric of land-use intensity and can reveal the patterns of land-use intensification.},
language = {en}
}
@article{SchweigelBatsiosMuellerTaubenbergeretal.2022,
author = {Schweigel, Ulrike and Batsios, Petros and M{\"u}ller-Taubenberger, Annette and Gr{\"a}f, Ralph and Grafe, Marianne},
title = {Dictyostelium spastin is involved in nuclear envelope dynamics during semi-closed mitosis},
series = {Nucleus},
volume = {13},
journal = {Nucleus},
number = {1},
publisher = {Taylor \& Francis Group},
address = {Philadelphia},
issn = {1949-1034},
doi = {10.1080/19491034.2022.2047289},
pages = {144 -- 154},
year = {2022},
abstract = {Dictyostelium amoebae perform a semi-closed mitosis, in which the nuclear envelope is fenestrated at the insertion sites of the mitotic centrosomes and around the central spindle during karyokinesis. During late telophase the centrosome relocates to the cytoplasmic side of the nucleus, the central spindle disassembles and the nuclear fenestrae become closed. Our data indicate that Dictyostelium spastin (DdSpastin) is a microtubule-binding and severing type I membrane protein that plays a role in this process. Its mitotic localization is in agreement with a requirement for the removal of microtubules that would hinder closure of the fenestrae. Furthermore, DdSpastin interacts with the HeH/ LEM-family protein Src1 in BioID analyses as well as the inner nuclear membrane protein Sun1, and shows subcellular co-localizations with Src1, Sun1, the ESCRT component CHMP7 and the IST1-like protein filactin, suggesting that the principal pathway of mitotic nuclear envelope remodeling is conserved between animals and Dictyostelium amoebae.},
language = {en}
}
@article{TebbeOttensmannHavensteinetal.2022,
author = {Tebbe, Jonas and Ottensmann, Meinolf and Havenstein, Katja and Efstratiou, Artemis and Lenz, Tobias L. and Caspers, Barbara A. and Forcada, Jaume and Tiedemann, Ralph and Hoffman, Joseph},
title = {Intronic primers reveal unexpectedly high major histocompatibility complex diversity in Antarctic fur seals},
series = {Scientific reports},
volume = {12},
journal = {Scientific reports},
number = {1},
publisher = {Nature Publishing Group},
address = {London},
issn = {2045-2322},
doi = {10.1038/s41598-022-21658-7},
pages = {14},
year = {2022},
abstract = {The major histocompatibility complex (MHC) is a group of genes comprising one of the most important components of the vertebrate immune system. Consequently, there has been much interest in characterising MHC variation and its relationship with fitness in a variety of species. Due to the exceptional polymorphism of MHC genes, careful PCR primer design is crucial for capturing all of the allelic variation present in a given species. We therefore developed intronic primers to amplify the full-length 267 bp protein-coding sequence of the MHC class II DQB exon 2 in the Antarctic fur seal. We then characterised patterns of MHC variation among mother-offspring pairs from two breeding colonies and detected 19 alleles among 771 clone sequences from 56 individuals. The distribution of alleles within and among individuals was consistent with a single-copy, classical DQB locus showing Mendelian inheritance. Amino acid similarity at the MHC was significantly associated with genome-wide relatedness, but no relationship was found between MHC heterozygosity and genome-wide heterozygosity. Finally, allelic diversity was several times higher than reported by a previous study based on partial exon sequences. This difference appears to be related to allele-specific amplification bias, implying that primer design can strongly impact the inference of MHC diversity.},
language = {en}
}
@article{KiemelWeithoffTiedemann2022,
author = {Kiemel, Katrin and Weithoff, Guntram and Tiedemann, Ralph},
title = {DNA metabarcoding reveals impact of local recruitment, dispersal, and hydroperiod on assembly of a zooplankton metacommunity},
series = {Molecular ecology},
volume = {32},
journal = {Molecular ecology},
number = {23},
publisher = {Wiley},
address = {Hoboken},
issn = {0962-1083},
doi = {10.1111/mec.16627},
pages = {20},
year = {2022},
abstract = {Understanding the environmental impact on the assembly of local communities in relation to their spatial and temporal connectivity is still a challenge in metacommunity ecology. This study aims to unravel underlying metacommunity processes and environmental factors that result in observed zooplankton communities. Unlike most metacommunity studies, we jointly examine active and dormant zooplankton communities using a DNA metabarcoding approach to overcome limitations of morphological species identification. We applied two-fragment (COI and 18S) metabarcoding to monitor communities of 24 kettle holes over a two-year period to unravel (i) spatial and temporal connectivity of the communities, (ii) environmental factors influencing local communities, and (iii) dominant underlying metacommunity processes in this system. We found a strong separation of zooplankton communities from kettle holes of different hydroperiods (degree of permanency) throughout the season, while the community composition within single kettle holes did not differ between years. Species richness was primarily dependent on pH and permanency, while species diversity (Shannon Index) was influenced by kettle hole location. Community composition was impacted by kettle hole size and surrounding field crops. Environmental processes dominated temporal and spatial processes. Sediment communities showed a different composition compared to water samples but did not differ between ephemeral and permanent kettle holes. Our results suggest that communities are mainly structured by environmental filtering based on pH, kettle hole size, surrounding field crops, and permanency. Environmental filtering based on specific conditions in individual kettle holes seems to be the dominant process in community assembly in the studied zooplankton metacommunity.},
language = {en}
}
@article{ParrySchlaegelTiedemannetal.2022,
author = {Parry, Victor and Schl{\"a}gel, Ulrike E. and Tiedemann, Ralph and Weithoff, Guntram},
title = {Behavioural responses of defended and undefended prey to their predator},
series = {Biology : open access journal},
volume = {11},
journal = {Biology : open access journal},
number = {8},
publisher = {MDPI},
address = {Basel},
issn = {2079-7737},
doi = {10.3390/biology11081217},
pages = {14},
year = {2022},
abstract = {Many animals that have to cope with predation have evolved mechanisms to reduce their predation risk. One of these mechanisms is change in morphology, for example, the development of spines. These spines are induced, when mothers receive chemical signals of a predator (kairomones) and their daughters are then equipped with defensive spines. We studied the behaviour of a prey and its predator when the prey is either defended or undefended. We used common aquatic micro-invertebrates, the rotifers Brachionus calyciflorus (prey) and Asplanchna brightwellii (predator) as experimental animals. We found that undefended prey increased its swimming speed in the presence of the predator. The striking result was that the defended prey did not respond to the predator's presence. This suggests that defended prey has a different response behaviour to a predator than undefended conspecifics. Our study provides further insights into complex zooplankton predator-prey interactions. Predation is a strong species interaction causing severe harm or death to prey. Thus, prey species have evolved various defence strategies to minimize predation risk, which may be immediate (e.g., a change in behaviour) or transgenerational (morphological defence structures). We studied the behaviour of two strains of a rotiferan prey (Brachionus calyciflorus) that differ in their ability to develop morphological defences in response to their predator Asplanchna brightwellii. Using video analysis, we tested: (a) if two strains differ in their response to predator presence and predator cues when both are undefended; (b) whether defended individuals respond to live predators or their cues; and (c) if the morphological defence (large spines) per se has an effect on the swimming behaviour. We found a clear increase in swimming speed for both undefended strains in predator presence. However, the defended specimens responded neither to the predator presence nor to their cues, showing that they behave indifferently to their predator when they are defended. We did not detect an effect of the spines on the swimming behaviour. Our study demonstrates a complex plastic behaviour of the prey, not only in the presence of their predator, but also with respect to their defence status.},
language = {en}
}
@article{EmaryMalchow2022,
author = {Emary, Clive and Malchow, Anne-Kathleen},
title = {Stability-instability transition in tripartite merged ecological networks},
series = {Journal of mathematical biology},
volume = {85},
journal = {Journal of mathematical biology},
number = {3},
publisher = {Springer},
address = {Heidelberg},
issn = {0303-6812},
doi = {10.1007/s00285-022-01783-7},
pages = {18},
year = {2022},
abstract = {Although ecological networks are typically constructed based on a single type of interaction, e.g. trophic interactions in a food web, a more complete picture of ecosystem composition and functioning arises from merging networks of multiple interaction types. In this work, we consider tripartite networks constructed by merging two bipartite networks, one mutualistic and one antagonistic. Taking the interactions within each sub-network to be distributed randomly, we consider the stability of the dynamics of the network based on the spectrum of its community matrix. In the asymptotic limit of a large number of species, we show that the spectrum undergoes an eigenvalue phase transition, which leads to an abrupt destabilisation of the network as the ratio of mutualists to antagonists is increased. We also derive results that show how this transition is manifest in networks of finite size, as well as when disorder is introduced in the segregation of the two interaction types. Our random-matrix results will serve as a baseline for understanding the behaviour of merged networks with more realistic structures and/or more detailed dynamics.},
language = {en}
}
@article{SchloerHirschbergBenAmoretal.2022,
author = {Schl{\"o}r, Anja and Hirschberg, Stefan and Ben Amor, Ghada and Meister, Toni Luise and Arora, Prerna and P{\"o}hlmann, Stefan and Hoffmann, Markus and Pf{\"a}nder, Stephanie and Eddin, Omar Kamal and Kamhieh-Milz, Julian and Hanack, Katja},
title = {SARS-CoV-2 neutralizing camelid heavy-chain-only antibodies as powerful tools for diagnostic and therapeutic applications},
series = {Frontiers in Immunology},
journal = {Frontiers in Immunology},
publisher = {Frontiers Media SA},
address = {Lausanne, Schweiz},
issn = {1664-3224},
doi = {10.3389/fimmu.2022.930975},
pages = {1 -- 14},
year = {2022},
abstract = {Introduction: The ongoing COVID-19 pandemic situation caused by SARS-CoV-2 and variants of concern such as B.1.617.2 (Delta) and recently, B.1.1.529 (Omicron) is posing multiple challenges to humanity. The rapid evolution of the virus requires adaptation of diagnostic and therapeutic applications. Objectives: In this study, we describe camelid heavy-chain-only antibodies (hcAb) as useful tools for novel in vitro diagnostic assays and for therapeutic applications due to their neutralizing capacity. Methods: Five antibody candidates were selected out of a na{\"i}ve camelid library by phage display and expressed as full length IgG2 antibodies. The antibodies were characterized by Western blot, enzyme-linked immunosorbent assays, surface plasmon resonance with regard to their specificity to the recombinant SARS-CoV-2 Spike protein and to SARS-CoV-2 virus-like particles. Neutralization assays were performed with authentic SARS-CoV-2 and pseudotyped viruses (wildtype and Omicron). Results: All antibodies efficiently detect recombinant SARS-CoV-2 Spike protein and SARS-CoV-2 virus-like particles in different ELISA setups. The best combination was shown with hcAb B10 as catcher antibody and HRP-conjugated hcAb A7.2 as the detection antibody. Further, four out of five antibodies potently neutralized authentic wildtype SARS-CoV-2 and particles pseudotyped with the SARS-CoV-2 Spike proteins of the wildtype and Omicron variant, sublineage BA.1 at concentrations between 0.1 and 0.35 ng/mL (ND50). Conclusion: Collectively, we report novel camelid hcAbs suitable for diagnostics and potential therapy.},
language = {en}
}
@article{EngelMicheelHanack2022,
author = {Engel, Robert and Micheel, Burkhard and Hanack, Katja},
title = {Three-dimensional cell culture approach for in vitro immunization and the production of monoclonal antibodies},
series = {Biomedical materials : materials for tissue engineering and regenerative medicine},
volume = {17},
journal = {Biomedical materials : materials for tissue engineering and regenerative medicine},
number = {5},
publisher = {Inst. of Physics},
address = {London},
issn = {1748-6041},
doi = {10.1088/1748-605X/ac7b00},
pages = {11},
year = {2022},
abstract = {The generation of monoclonal antibodies using an in vitro immunization approach is a promising alternative to conventional hybridoma technology. As recently published, the in vitro approach enables an antigen-specific activation of B lymphocytes within 10-12 d followed by immortalization and subsequent selection of hybridomas. This in vitro process can be further improved by using a three-dimensional surrounding to stabilize the complex microenvironment required for a successful immune reaction. In this study, the suitability of Geltrex as a material for the generation of monoclonal antigen-specific antibodies by in vitro immunization was analyzed. We could show that dendritic cells, B cells, and T cells were able to travel through and interact inside of the matrix, leading to the antigen-specific activation of T and B cells. For cell recovery and subsequent hybridoma technique the suitability of dispase and Corning cell recovery solution (CRS) was compared. In our experiments, the use of dispase resulted in a severe alteration of cell surface receptor expression patterns and significantly higher cell death, while we could not detect an adverse effect of Corning CRS. Finally, an easy approach for high-density cell culture was established by printing an alginate ring inside a cell culture vessel. The ring was filled with Geltrex, cells, and medium to ensure a sufficient supply during cultivation. Using this approach, we were able to generate monoclonal hybridomas that produce antigen-specific antibodies against ovalbumin and the SARS-CoV-2 nucleocapsid protein.},
language = {en}
}
@article{CzarneckaWeicheltRoedigeretal.2022,
author = {Czarnecka, Malgorzata and Weichelt, Ulrike and R{\"o}diger, Stefan and Hanack, Katja},
title = {Novel Anti Double-Stranded Nucleic Acids Full-Length Recombinant Camelid Heavy-Chain Antibody for the Detection of miRNA},
series = {International Journal of Molecular Sciences},
volume = {23},
journal = {International Journal of Molecular Sciences},
edition = {11},
publisher = {MDPI},
address = {Basel, Schweiz},
issn = {1422-0067},
doi = {10.3390/ijms23116275},
pages = {1 -- 18},
year = {2022},
abstract = {The discovery that certain diseases have specific miRNA signatures which correspond to disease progression opens a new biomarker category. The detection of these small non-coding RNAs is performed routinely using body fluids or tissues with real-time PCR, next-generation sequencing, or amplification-based miRNA assays. Antibody-based detection systems allow an easy onset handling compared to PCR or sequencing and can be considered as alternative methods to support miRNA diagnostic in the future. In this study, we describe the generation of a camelid heavy-chain-only antibody specifically recognizing miRNAs to establish an antibody-based detection method. The generation of nucleic acid-specific binders is a challenge. We selected camelid binders via phage display, expressed them as VHH as well as full-length antibodies, and characterized the binding to several miRNAs from a signature specific for dilated cardiomyopathy. The described workflow can be used to create miRNA-specific binders and establish antibody-based detection methods to provide an additional way to analyze disease-specific miRNA signatures.},
language = {en}
}
@article{BognarSupalaYarmanetal.2022,
author = {Bogn{\´a}r, Zs{\´o}fia and Supala, Eszter and Yarman, Aysu and Zhang, Xiaorong and Bier, Frank Fabian and Scheller, Frieder W. and Gyurcsanyi, R{\´o}bert E.},
title = {Peptide epitope-imprinted polymer microarrays for selective protein recognition},
series = {Chemical science / RSC, Royal Society of Chemistry},
volume = {13},
journal = {Chemical science / RSC, Royal Society of Chemistry},
number = {5},
publisher = {Royal Society of Chemistry},
address = {Cambridge},
issn = {2041-6539},
doi = {10.1039/d1sc04502d},
pages = {1263 -- 1269},
year = {2022},
abstract = {We introduce a practically generic approach for the generation of epitope-imprinted polymer-based microarrays for protein recognition on surface plasmon resonance imaging (SPRi) chips. The SPRi platform allows the subsequent rapid screening of target binding kinetics in a multiplexed and label-free manner. The versatility of such microarrays, both as synthetic and screening platform, is demonstrated through developing highly affine molecularly imprinted polymers (MIPs) for the recognition of the receptor binding domain (RBD) of SARS-CoV-2 spike protein. A characteristic nonapeptide GFNCYFPLQ from the RBD and other control peptides were microspotted onto gold SPRi chips followed by the electrosynthesis of a polyscopoletin nanofilm to generate in one step MIP arrays. A single chip screening of essential synthesis parameters, including the surface density of the template peptide and its sequence led to MIPs with dissociation constants (K-D) in the lower nanomolar range for RBD, which exceeds the affinity of RBD for its natural target, angiotensin-convertase 2 enzyme. Remarkably, the same MIPs bound SARS-CoV-2 virus like particles with even higher affinity along with excellent discrimination of influenza A (H3N2) virus. While MIPs prepared with a truncated heptapeptide template GFNCYFP showed only a slightly decreased affinity for RBD, a single mismatch in the amino acid sequence of the template, i.e. the substitution of the central cysteine with a serine, fully suppressed the RBD binding.},
language = {en}
}
@article{KiemelGurkeParaskevopoulouetal.2022,
author = {Kiemel, Katrin and Gurke, Marie and Paraskevopoulou, Sofia and Havenstein, Katja and Weithoff, Guntram and Tiedemann, Ralph},
title = {Variation in heat shock protein 40 kDa relates to divergence in thermotolerance among cryptic rotifer species},
series = {Scientific reports},
volume = {12},
journal = {Scientific reports},
number = {1},
publisher = {Macmillan Publishers Limited},
address = {London},
issn = {2045-2322},
doi = {10.1038/s41598-022-27137-3},
pages = {14},
year = {2022},
abstract = {Genetic divergence and the frequency of hybridization are central for defining species delimitations, especially among cryptic species where morphological differences are merely absent. Rotifers are known for their high cryptic diversity and therefore are ideal model organisms to investigate such patterns. Here, we used the recently resolved Brachionus calyciflorus species complex to investigate whether previously observed between species differences in thermotolerance and gene expression are also reflected in their genomic footprint. We identified a Heat Shock Protein gene (HSP 40 kDa) which exhibits cross species pronounced sequence variation. This gene exhibits species-specific fixed sites, alleles, and sites putatively under positive selection. These sites are located in protein binding regions involved in chaperoning and may therefore reflect adaptive diversification. By comparing three genetic markers (ITS, COI, HSP 40 kDa), we revealed hybridization events between the cryptic species. The low frequency of introgressive haplotypes/alleles suggest a tight, but not fully impermeable boundary between the cryptic species.},
language = {en}
}
@article{KiemelGurkeParaskevopoulouetal.2022,
author = {Kiemel, Katrin and Gurke, Marie and Paraskevopoulou, Sofia and Havenstein, Katja and Weithoff, Guntram and Tiedemann, Ralph},
title = {Variation in heat shock protein 40 kDa relates to divergence in thermotolerance among cryptic rotifer species},
series = {Scientific Reports},
volume = {12},
journal = {Scientific Reports},
publisher = {Springer Nature},
address = {London},
issn = {2045-2322},
doi = {10.1038/s41598-022-27137-3},
pages = {14},
year = {2022},
abstract = {Genetic divergence and the frequency of hybridization are central for defining species delimitations, especially among cryptic species where morphological differences are merely absent. Rotifers are known for their high cryptic diversity and therefore are ideal model organisms to investigate such patterns. Here, we used the recently resolved Brachionus calyciflorus species complex to investigate whether previously observed between species differences in thermotolerance and gene expression are also reflected in their genomic footprint. We identified a Heat Shock Protein gene (HSP 40 kDa) which exhibits cross species pronounced sequence variation. This gene exhibits species-specific fixed sites, alleles, and sites putatively under positive selection. These sites are located in protein binding regions involved in chaperoning and may therefore reflect adaptive diversification. By comparing three genetic markers (ITS, COI, HSP 40 kDa), we revealed hybridization events between the cryptic species. The low frequency of introgressive haplotypes/alleles suggest a tight, but not fully impermeable boundary between the cryptic species.},
language = {en}
}
@article{FioriniDominguezReboredaetal.2022,
author = {Fiorini, Vanina D. and Dom{\´i}nguez, Marisol and Reboreda, Juan C. and Swaddle, John P.},
title = {A recent invasive population of the European starling sturnus vulgaris has lower genetic diversity and higher fluctuating asymmetry than primary invasive and native populations},
series = {Biological invasions : unique international journal uniting scientists in the broad field of biological invasions},
volume = {24},
journal = {Biological invasions : unique international journal uniting scientists in the broad field of biological invasions},
number = {2},
publisher = {Springer},
address = {Dordrecht},
issn = {1387-3547},
doi = {10.1007/s10530-021-02653-x},
pages = {437 -- 448},
year = {2022},
abstract = {Fluctuating asymmetries (FA) are small stress-induced random deviations from perfect symmetry that arise during the development of bilaterally symmetrical traits. One of the factors that can reduce developmental stability of the individuals and cause FA at a population level is the loss of genetic variation. Populations of founding colonists frequently have lower genetic variation than their ancestral populations that could be reflected in a higher level of FA. The European starling (Sturnus vulgaris) is native to Eurasia and was introduced successfully in the USA in 1890 and Argentina in 1983. In this study, we documented the genetic diversity and FA of starlings from England (ancestral population), USA (primary introduction) and Argentina (secondary introduction). We predicted the Argentinean starlings would have the highest level of FA and lowest genetic diversity of the three populations. We captured wild adult European starlings in England, USA, and Argentina, measured their mtDNA diversity and allowed them to molt under standardized conditions to evaluate their FA of primary feathers. For genetic analyses, we extracted DNA from blood samples of individuals from Argentina and USA and from feather samples from individuals from England and sequenced the mitochondrial control region. Starlings in Argentina showed the highest composite FA and exhibited the lowest haplotype and nucleotide diversity. The USA population showed a level of FA and genetic diversity similar to the native population. Therefore, the level of asymmetry and genetic diversity found among these populations was consistent with our predictions based on their invasion history.},
language = {en}
}
@article{HoffmannHoelkerEccard2022,
author = {Hoffmann, Julia and H{\"o}lker, Franz and Eccard, Jana},
title = {Welcome to the dark side},
series = {Frontiers in ecology and evolution},
volume = {9},
journal = {Frontiers in ecology and evolution},
publisher = {Frontiers Media},
address = {Lausanne},
issn = {2296-701X},
doi = {10.3389/fevo.2021.779825},
pages = {11},
year = {2022},
abstract = {Differences in natural light conditions caused by changes in moonlight are known to affect perceived predation risk in many nocturnal prey species. As artificial light at night (ALAN) is steadily increasing in space and intensity, it has the potential to change movement and foraging behavior of many species as it might increase perceived predation risk and mask natural light cycles. We investigated if partial nighttime illumination leads to changes in foraging behavior during the night and the subsequent day in a small mammal and whether these changes are related to animal personalities. We subjected bank voles to partial nighttime illumination in a foraging landscape under laboratory conditions and in large grassland enclosures under near natural conditions. We measured giving-up density of food in illuminated and dark artificial seed patches and video recorded the movement of animals. While animals reduced number of visits to illuminated seed patches at night, they increased visits to these patches at the following day compared to dark seed patches. Overall, bold individuals had lower giving-up densities than shy individuals but this difference increased at day in formerly illuminated seed patches. Small mammals thus showed carry-over effects on daytime foraging behavior due to ALAN, i.e., nocturnal illumination has the potential to affect intra- and interspecific interactions during both night and day with possible changes in personality structure within populations and altered predator-prey dynamics.},
language = {en}
}
@article{ScharfWeineltSchroederetal.2022,
author = {Scharf, Christina and Weinelt, Ferdinand Anton and Schroeder, Ines and Paal, Michael and Weigand, Michael and Zoller, Michael and Irlbeck, Michael and Kloft, Charlotte and Briegel, Josef and Liebchen, Uwe},
title = {Does the cytokine adsorber CytoSorb (R) reduce vancomycin exposure in critically ill patients with sepsis or septic shock?},
series = {Annals of intensive care},
volume = {12},
journal = {Annals of intensive care},
number = {1},
publisher = {Springer},
address = {Heidelberg},
issn = {2110-5820},
doi = {10.1186/s13613-022-01017-5},
pages = {8},
year = {2022},
abstract = {Background: Hemadsorption of cytokines is used in critically ill patients with sepsis or septic shock. Concerns have been raised that the cytokine adsorber CytoSorb (R) unintentionally adsorbs vancomycin. This study aimed to quantify vancomycin elimination by CytoSorb (R) . Methods: Critically ill patients with sepsis or septic shock receiving continuous renal replacement therapy and CytoSorb (R) treatment during a prospective observational study were included in the analysis. Vancomycin pharmacokinetics was characterized using population pharmacokinetic modeling. Adsorption of vancomycin by the CytoSorb (R) was investigated as linear or saturable process. The final model was used to derive dosing recommendations based on stochastic simulations. Results: 20 CytoSorb (R) treatments in 7 patients (160 serum samples/24 during CytoSorb (R)-treatment, all continuous infusion) were included in the study. A classical one-compartment model, including effluent flow rate of the continuous hemodialysis as linear covariate on clearance, best described the measured concentrations (without CytoSorb (R)). Significant adsorption with a linear decrease during CytoSorb (R) treatment was identified (p <0.0001) and revealed a maximum increase in vancomycin clearance of 291\% (initially after CytoSorb (R) installation) and a maximum adsorption capacity of 572 mg. For a representative patient of our cohort a reduction of the area under the curve (AUC) by 93 mg/L*24 h during CytoSorb (R) treatment was observed. The additional administration of 500 mg vancomycin over 2 h during CytoSorb (R) attenuated the effect and revealed a negligible reduction of the AUC by 4 mg/L*24h. Conclusion: We recommend the infusion of 500 mg vancomycin over 2 h during CytoSorb (R) treatment to avoid subtherapeutic concentrations.},
language = {en}
}
@article{PohleHosoyaPohleetal.2022,
author = {Pohle, Lara and Hosoya, Georg and Pohle, Jennifer and Meyer-Jenßen, Lars},
title = {The relationship between early childhood teachers' instructional quality and children's mathematics development},
series = {Learning and instruction : the journal of the European Association for Research on Learning and Instruction},
volume = {82},
journal = {Learning and instruction : the journal of the European Association for Research on Learning and Instruction},
publisher = {Elsevier},
address = {Oxford},
issn = {0959-4752},
doi = {10.1016/j.learninstruc.2022.101636},
pages = {12},
year = {2022},
abstract = {This study examined how early childhood (EC) teachers' instructional quality predicted children's development in mathematics across two measurement occasions. Therefore, EC teachers' (n = 25) instructional quality was assessed using one standardized observation instrument covering both domain-specific and general aspects of instructional quality. Additionally, data on children's (n = 208) outcome in early number skills was collected applying a standardized test. Multilevel structural equation modeling was used accounting for nested data. Children's age and the average size of preschool groups were controlled for. Results revealed that EC teachers' instructional quality predicted children's development but was not associated with their initial achievement. The findings suggest that instruments covering domain-specific and general aspects might be helpful in order to measure EC teachers' instructional quality in mathematics and predict children's learning growth. Understanding the mechanisms between instructional quality and children's development may help EC teachers to enhance their math teaching in practice.},
language = {en}
}
@article{FoersterAsratRamseyetal.2022,
author = {Foerster, Verena and Asrat, Asfawossen and Ramsey, Christopher Bronk and Brown, Erik T. and Chapot, Melissa S. and Deino, Alan and D{\"u}sing, Walter and Grove, Matthew and Hahn, Annette and Junginger, Annett and Kaboth-Bahr, Stefanie and Lane, Christine S. and Opitz, Stephan and Noren, Anders and Roberts, Helen M. and Stockhecke, Mona and Tiedemann, Ralph and Vidal, Celine M. and Vogelsang, Ralf and Cohen, Andrew S. and Lamb, Henry F. and Schaebitz, Frank and Trauth, Martin H.},
title = {Pleistocene climate variability in eastern Africa influenced hominin evolution},
series = {Nature geoscience},
volume = {15},
journal = {Nature geoscience},
number = {10},
publisher = {Nature Publ. Group},
address = {London},
issn = {1752-0894},
doi = {10.1038/s41561-022-01032-y},
pages = {805 -- 811},
year = {2022},
abstract = {Despite more than half a century of hominin fossil discoveries in eastern Africa, the regional environmental context of hominin evolution and dispersal is not well established due to the lack of continuous palaeoenvironmental records from one of the proven habitats of early human populations, particularly for the Pleistocene epoch. Here we present a 620,000-year environmental record from Chew Bahir, southern Ethiopia, which is proximal to key fossil sites. Our record documents the potential influence of different episodes of climatic variability on hominin biological and cultural transformation. The appearance of high anatomical diversity in hominin groups coincides with long-lasting and relatively stable humid conditions from similar to 620,000 to 275,000 years bp (episodes 1-6), interrupted by several abrupt and extreme hydroclimate perturbations. A pattern of pronounced climatic cyclicity transformed habitats during episodes 7-9 (similar to 275,000-60,000 years bp), a crucial phase encompassing the gradual transition from Acheulean to Middle Stone Age technologies, the emergence of Homo sapiens in eastern Africa and key human social and cultural innovations. Those accumulative innovations plus the alignment of humid pulses between northeastern Africa and the eastern Mediterranean during high-frequency climate oscillations of episodes 10-12 (similar to 60,000-10,000 years bp) could have facilitated the global dispersal of H. sapiens.},
language = {en}
}
@article{ZhangLiuMachatscheketal.2022,
author = {Zhang, Shanshan and Liu, Yue and Machatschek, Rainhard Gabriel and Lendlein, Andreas},
title = {Ultrathin collagen type I films formed at the air-water interface},
series = {MRS advances : a journal of the Materials Research Society (MRS)},
volume = {7},
journal = {MRS advances : a journal of the Materials Research Society (MRS)},
number = {4},
publisher = {Springer Nature Switzerland AG},
address = {Cham},
issn = {2059-8521},
doi = {10.1557/s43580-021-00160-8},
pages = {56 -- 62},
year = {2022},
abstract = {Collagen-based biomaterials with oriented fibrils have shown great application potential in medicine. However, it is still challenging to control the type I collagen fibrillogenesis in ultrathin films. Here, we report an approach to produce cohesive and well-organized type I collagen ultrathin films of about 10 nm thickness using the Langmuir-Blodgett technique. Ellipsometry, rheology, and Brewster angle microscopy are applied to investigate in situ how the molecules behave at the air-water interface, both at room temperature and 37 degrees C. The interfacial storage modulus observed at room temperature vanishes upon heating, indicating the existence and disappearance of the network structure in the protein nanosheet. The films were spanning over holes as large as 1 mm diameter when transferred at room temperature, proving the strong cohesive interactions. A highly aligned and fibrillar structure was observed by atomic force microscopy (AFM) and optical microscopy.},
language = {en}
}
@article{OlimiKusstatscherWicaksonoetal.2022,
author = {Olimi, Expedito and Kusstatscher, Peter and Wicaksono, Wisnu Adi and Abdelfattah, Ahmed and Cernava, Tomislav and Berg, Gabriele},
title = {Insights into the microbiome assembly during different growth stages and storage of strawberry plants},
series = {Environmental microbiome},
volume = {17},
journal = {Environmental microbiome},
number = {1},
publisher = {BMC},
address = {London},
issn = {2524-6372},
doi = {10.1186/s40793-022-00415-3},
pages = {15},
year = {2022},
abstract = {Background: Microbiome assembly was identified as an important factor for plant growth and health, but this process is largely unknown, especially for the fruit microbiome. Therefore, we analyzed strawberry plants of two cultivars by focusing on microbiome tracking during the different growth stages and storage using amplicon sequencing, qPCR, and microscopic approaches.
Results: Strawberry plants carried a highly diverse microbiome, therein the bacterial families Sphingomonadaceae (25\%), Pseudomonadaceae (17\%), and Burkholderiaceae (11\%); and the fungal family Mycosphaerella (45\%) were most abundant. All compartments were colonized by high number of bacteria and fungi (10(7)-10(10) marker gene copies per g fresh weight), and were characterized by high microbial diversity (6049 and 1501 ASVs); both were higher for the belowground samples than in the phyllosphere. Compartment type was the main driver of microbial diversity, structure, and abundance (bacterial: 45\%; fungal: 61\%) when compared to the cultivar (1.6\%; 2.2\%). Microbiome assembly was strongly divided for belowground habitats and the phyllosphere; only a low proportion of the microbiome was transferred from soil via the rhizosphere to the phyllosphere. During fruit development, we observed the highest rates of microbial transfer from leaves and flowers to ripe fruits, where most of the bacteria occured inside the pulp. In postharvest fruits, microbial diversity decreased while the overall abundance increased. Developing postharvest decay caused by Botrytis cinerea decreased the diversity as well, and induced a reduction of potentially beneficial taxa.
Conclusion: Our findings provide insights into microbiome assembly in strawberry plants and highlight the importance of microbe transfer during fruit development and storage with potential implications for food health and safety.},
language = {en}
}
@article{CabukUenlue2022,
author = {{\c{C}}abuk, Uğur and {\"U}nl{\"u}, Ercan Sel{\c{c}}uk},
title = {A combined de novo assembly approach increases the quality of prokaryotic draft genomes},
series = {Folia microbiologica : international journal for general, environmental and applied microbiology, and immunology},
volume = {67},
journal = {Folia microbiologica : international journal for general, environmental and applied microbiology, and immunology},
publisher = {Springer},
address = {Dordrecht},
issn = {0015-5632},
doi = {10.1007/s12223-022-00980-7},
pages = {801 -- 810},
year = {2022},
abstract = {Next-generation sequencing methods provide comprehensive data for the analysis of structural and functional analysis of the genome. The draft genomes with low contig number and high N50 value can give insight into the structure of the genome as well as provide information on the annotation of the genome. In this study, we designed a pipeline that can be used to assemble prokaryotic draft genomes with low number of contigs and high N50 value. We aimed to use combination of two de novo assembly tools (SPAdes and IDBA-Hybrid) and evaluate the impact of this approach on the quality metrics of the assemblies. The followed pipeline was tested with the raw sequence data with short reads (< 300) for a total of 10 species from four different genera. To obtain the final draft genomes, we firstly assembled the sequences using SPAdes to find closely related organism using the extracted 16 s rRNA from it. IDBA-Hybrid assembler was used to obtain the second assembly data using the closely related organism genome. SPAdes assembler tool was implemented using the second assembly, produced by IDBA-hybrid as a hint. The results were evaluated using QUAST and BUSCO. The pipeline was successful for the reduction of the contig numbers and increasing the N50 statistical values in the draft genome assemblies while preserving the coverage of the draft genomes.},
language = {en}
}
@article{IltisFrahmVoitetal.2022,
author = {Iltis, Peter W. and Frahm, Jens and Voit, Dirk and Wood, Danielle and Taylor, Scott},
title = {Oral cavity movements of the tongue during large interval slurs in high-level horn players br a descriptive study},
series = {Medical problems of performing artists},
volume = {3},
journal = {Medical problems of performing artists},
number = {2},
publisher = {Science \& Medicine, Inc.},
address = {Narberth},
issn = {0885-1158},
doi = {10.21091/mppa.2022.2014},
pages = {89 -- 97},
year = {2022},
abstract = {OBJECTIVE: Recent publications describing lingual movement strategies within the oral cavity of brass players have established the existence of efficient and predictable movement patterns in healthy performers for a variety of performance tasks. In this study we extend the research to include the playing of large interval slurs in horn players. METHODS: Real-time MRI films at 40-msec resolution were simultaneously obtained in the sagittal and coronal planes in 9 professional horn players as they performed 2 repetitions each of 3 slur sequences spanning 1 octave, 1 octave + 3rd, and 1 octave + 5th at a mezzo forte dynamic level. Nine profile lines were overlaid on the images allowing the measurement of dorsal tongue edge movement using a customized MATLAB toolkit. Movement along lines representing the anterior, middle, and posterior oral cavity in the sagittal plane, as well as the vertical height of an air channel observed in the coronal plane, are reported. RESULTS: Both sagittal and coronal views demonstrate patterned tongue movements that narrow and widen the air channel during ascending and descending slurs, respectively. The magnitude of these movements is greater during larger intervals, though not perfectly consistent within each slur sequence. Additionally, the tongue position during notes tends to drift in the direction of the subsequent note in each sequence. We suggest that the observed movements may help to modulate air speed through the lips, possible attenuating embouchure muscle tension changes by assisting changes in lip vibration frequency.},
language = {en}
}
@article{LaunDuffusWahlefeldetal.2022,
author = {Laun, Konstantin and Duffus, Benjamin R. and Wahlefeld, Stefan and Katz, Sagie and Belger, Dennis Heinz and Hildebrandt, Peter and Mroginski, Maria Andrea and Leimk{\"u}hler, Silke and Zebger, Ingo},
title = {Infrared spectroscopy flucidates the inhibitor binding sites in a metal-dependent formate dehydrogenase},
series = {Chemistry - a European journal},
journal = {Chemistry - a European journal},
publisher = {Wiley-VCH},
address = {Weinheim},
issn = {0947-6539},
doi = {10.1002/chem.202201091},
pages = {8},
year = {2022},
abstract = {Biological carbon dioxide (CO2) reduction is an important step by which organisms form valuable energy-richer molecules required for further metabolic processes. The Mo-dependent formate dehydrogenase (FDH) from Rhodobacter capsulatus catalyzes reversible formate oxidation to CO2 at a bis-molybdopterin guanine dinucleotide (bis-MGD) cofactor. To elucidate potential substrate binding sites relevant for the mechanism, we studied herein the interaction with the inhibitory molecules azide and cyanate, which are isoelectronic to CO2 and charged as formate. We employed infrared (IR) spectroscopy in combination with density functional theory (DFT) and inhibition kinetics. One distinct inhibitory molecule was found to bind to either a non-competitive or a competitive binding site in the secondary coordination sphere of the active site. Site-directed mutagenesis of key amino acid residues in the vicinity of the bis-MGD cofactor revealed changes in both non-competitive and competitive binding, whereby the inhibitor is in case of the latter interaction presumably bound between the cofactor and the adjacent Arg587.},
language = {en}
}
@article{KlauschiesIsantaNavarro2022,
author = {Klauschies, Toni and Isanta-Navarro, Jana},
title = {The joint effects of salt and 6PPD contamination on a freshwater herbivore},
series = {The science of the total environment : an international journal for scientific research into the environment and its relationship with man},
volume = {829},
journal = {The science of the total environment : an international journal for scientific research into the environment and its relationship with man},
publisher = {Elsevier},
address = {Amsterdam},
issn = {0048-9697},
doi = {10.1016/j.scitotenv.2022.154675},
pages = {6},
year = {2022},
abstract = {Using sodium chloride (NaCl) for de-icing roads is known to have severe consequences on freshwater organisms when washed into water bodies. N-(1,3-dimethylbutyl)-N '-phenyl-p-phenylenediamine, also known as 6PPD, is an antiozonant mainly found in automobile tire rubber to prevent ozone mediated cracking or wear-out. Especially the ozonated derivate, 6PPD-quinone, which is washed into streams after storm events, has been found to be toxic for coho salmon. Studies on other freshwater organisms could not confirm those findings, pointing towards distinct species-specific differences. Storm events result in greater run-offs from all water-soluble contaminants into freshwater bodies, potentially enhancing the concentrations of both chloride and 6PPD during winter. Here we show that these two contaminants have synergistic negative effects on the population growth of the rotifer Brachionus calyciflorus, a common freshwater herbivore. Hence, while only high concentrations of 6PPD and even higher concentrations of 6PPD-quinone, beyond environmentally relevant concentrations, had lethal effects on rotifers, the addition of NaCl enhanced the sensitivity of the rotifers towards the application of 6PPD so that their negative effects were more pronounced at lower concentrations. Similarly, 6PPD increased the lethal effect of NaCl. Our results support the species-specific toxicity of 6PPD and demonstrate a synergistic effect of the antiozonant on the toxicity of other environmentally relevant stressors, such as road salt contamination.},
language = {en}
}
@article{AndradeLuCordeiroetal.2022,
author = {Andrade, Luis and Lu, Yunlong and Cordeiro, Andre and Costa, Jo{\~a}o M. F. and Wigge, Philip Anthony and Saibo, Nelson J. M. and Jaeger, Katja E.},
title = {The evening complex integrates photoperiod signals to control flowering in rice},
series = {Proceedings of the National Academy of Sciences of the United States of America : PNAS},
volume = {119},
journal = {Proceedings of the National Academy of Sciences of the United States of America : PNAS},
number = {26},
publisher = {National Acad. of Sciences},
address = {Washington},
issn = {0027-8424},
doi = {10.1073/pnas.2122582119},
pages = {8},
year = {2022},
abstract = {Plants use photoperiodism to activate flowering in response to a particular daylength. In rice, flowering is accelerated in short-day conditions, and even a brief exposure to light during the dark period (night-break) is sufficient to delay flowering. Although many of the genes involved in controlling flowering in rice have been uncovered, how the long- and short-day flowering pathways are integrated, and the mechanism of photoperiod perception is not understood. While many of the signaling components controlling photoperiod-activated flowering are conserved between Arabidopsis and rice, flowering in these two systems is activated by opposite photoperiods. Here we establish that photoperiodism in rice is controlled by the evening complex (EC). We show that mutants in the EC genes LUX ARRYTHMO (LUX) and EARLY FLOWERING3 (ELF3) paralogs abolish rice flowering. We also show that the EC directly binds and suppresses the expression of flowering repressors, including PRR37 and Ghd7. We further demonstrate that light acts via phyB to cause a rapid and sustained posttranslational modification of ELF3-1. Our results suggest a mechanism by which the EC is able to control both long- and short-day flowering pathways.},
language = {en}
}
@article{FujiharaZhangJacksonetal.2022,
author = {Fujihara, Kenji M. and Zhang, Bonnie Z. and Jackson, Thomas D. and Ogunkola, Moses and Nijagal, Brunda and Milne, Julia V. and Sallman, David A. and Ang, Ching-Seng and Nikolic, Iva and Kearney, Conor J. and Hogg, Simon J. and Cabalag, Carlos S. and Sutton, Vivien R. and Watt, Sally and Fujihara, Asuka T. and Trapani, Joseph A. and Simpson, Kaylene J. and Stojanovski, Diana and Leimk{\"u}hler, Silke and Haupt, Sue and Phillips, Wayne A. and Clemons, Nicholas J.},
title = {Eprenetapopt triggers ferroptosis, inhibits NFS1 cysteine desulfurase, and synergizes with serine and glycine dietary restriction},
series = {Science Advances},
volume = {8},
journal = {Science Advances},
number = {37},
publisher = {American Assoc. for the Advancement of Science},
address = {Washington},
issn = {2375-2548},
doi = {10.1126/sciadv.abm9427},
pages = {13},
year = {2022},
abstract = {The mechanism of action of eprenetapopt (APR-246, PRIMA-1MET) as an anticancer agent remains unresolved, al-though the clinical development of eprenetapopt focuses on its reported mechanism of action as a mutant-p53 reactivator. Using unbiased approaches, this study demonstrates that eprenetapopt depletes cellular antioxidant glutathione levels by increasing its turnover, triggering a nonapoptotic, iron-dependent form of cell death known as ferroptosis. Deficiency in genes responsible for supplying cancer cells with the substrates for de novo glutathione synthesis (SLC7A11, SHMT2, and MTHFD1L), as well as the enzymes required to synthesize glutathione (GCLC and GCLM), augments the activity of eprenetapopt. Eprenetapopt also inhibits iron-sulfur cluster biogenesis by limit-ing the cysteine desulfurase activity of NFS1, which potentiates ferroptosis and may restrict cellular proliferation. The combination of eprenetapopt with dietary serine and glycine restriction synergizes to inhibit esophageal xenograft tumor growth. These findings reframe the canonical view of eprenetapopt from a mutant-p53 reactivator to a ferroptosis inducer.},
language = {en}
}
@article{MummSchefflerHermanussen2022,
author = {Mumm, Rebekka and Scheffler, Christiane and Hermanussen, Michael},
title = {Locally structured correlation (LSC) plots describe inhomogeneity in normally distributed correlated bivariate variables},
series = {Archives of Public Health},
volume = {80},
journal = {Archives of Public Health},
publisher = {Springer Nature BMC},
address = {Bruxelles},
issn = {0778-7367},
doi = {10.1186/s13690-021-00748-4},
pages = {6},
year = {2022},
abstract = {Background The association between bivariate variables may not necessarily be homogeneous throughout the whole range of the variables. We present a new technique to describe inhomogeneity in the association of bivariate variables. Methods We consider the correlation of two normally distributed random variables. The 45° diagonal through the origin of coordinates represents the line on which all points would lie if the two variables completely agreed. If the two variables do not completely agree, the points will scatter on both sides of the diagonal and form a cloud. In case of a high association between the variables, the band width of this cloud will be narrow, in case of a low association, the band width will be wide. The band width directly relates to the magnitude of the correlation coefficient. We then determine the Euclidean distances between the diagonal and each point of the bivariate correlation, and rotate the coordinate system clockwise by 45°. The standard deviation of all Euclidean distances, named "global standard deviation", reflects the band width of all points along the former diagonal. Calculating moving averages of the standard deviation along the former diagonal results in "locally structured standard deviations" and reflect patterns of "locally structured correlations (LSC)". LSC highlight inhomogeneity of bivariate correlations. We exemplify this technique by analyzing the association between body mass index (BMI) and hip circumference (HC) in 6313 healthy East German adults aged 18 to 70 years. Results The correlation between BMI and HC in healthy adults is not homogeneous. LSC is able to identify regions where the predictive power of the bivariate correlation between BMI and HC increases or decreases, and highlights in our example that slim people have a higher association between BMI and HC than obese people. Conclusion Locally structured correlations (LSC) identify regions of higher or lower than average correlation between two normally distributed variables.},
language = {en}
}
@article{MummSchefflerHermanussen2022,
author = {Mumm, Rebekka and Scheffler, Christiane and Hermanussen, Michael},
title = {Locally structured correlation (LSC) plots describe inhomogeneity in normally distributed correlated bivariate variables},
series = {Archives of public health = Archives belges de sant{\´e} publique = Belgisch archief voor volksgezondheid},
volume = {80},
journal = {Archives of public health = Archives belges de sant{\´e} publique = Belgisch archief voor volksgezondheid},
number = {1},
publisher = {BMC},
address = {London},
issn = {0778-7367},
doi = {10.1186/s13690-021-00748-4},
pages = {6},
year = {2022},
abstract = {Background The association between bivariate variables may not necessarily be homogeneous throughout the whole range of the variables. We present a new technique to describe inhomogeneity in the association of bivariate variables. Methods We consider the correlation of two normally distributed random variables. The 45 degrees diagonal through the origin of coordinates represents the line on which all points would lie if the two variables completely agreed. If the two variables do not completely agree, the points will scatter on both sides of the diagonal and form a cloud. In case of a high association between the variables, the band width of this cloud will be narrow, in case of a low association, the band width will be wide. The band width directly relates to the magnitude of the correlation coefficient. We then determine the Euclidean distances between the diagonal and each point of the bivariate correlation, and rotate the coordinate system clockwise by 45 degrees. The standard deviation of all Euclidean distances, named "global standard deviation", reflects the band width of all points along the former diagonal. Calculating moving averages of the standard deviation along the former diagonal results in "locally structured standard deviations" and reflect patterns of "locally structured correlations (LSC)". LSC highlight inhomogeneity of bivariate correlations. We exemplify this technique by analyzing the association between body mass index (BMI) and hip circumference (HC) in 6313 healthy East German adults aged 18 to 70 years. Results The correlation between BMI and HC in healthy adults is not homogeneous. LSC is able to identify regions where the predictive power of the bivariate correlation between BMI and HC increases or decreases, and highlights in our example that slim people have a higher association between BMI and HC than obese people. Conclusion Locally structured correlations (LSC) identify regions of higher or lower than average correlation between two normally distributed variables.},
language = {en}
}
@article{SauterKratzFarhanetal.2022,
author = {Sauter, Tilman and Kratz, Karl and Farhan, Muhammad and Heuchel, Matthias and Lendlein, Andreas},
title = {Design and fabrication of fiber mesh actuators},
series = {Applied materials today},
volume = {29},
journal = {Applied materials today},
publisher = {Elsevier},
address = {Amsterdam},
issn = {2352-9407},
doi = {10.1016/j.apmt.2022.101562},
pages = {13},
year = {2022},
abstract = {Soft actuator performance can be tuned by chemistry or mechanical manipulation, but this adjustability is limited especially in view of their growing technological relevance. Inspired from textile engineering, we designed and fabricated fiber mesh actuators and introduced new features like anisotropic behavior and soft-tissue like elastic deformability. Design criteria for the meshes are the formation of fiber bundles, the angle between fiber bundles in different stacked layers and covalent crosslinks forming within and between fibers at their interfacial contact areas. Through crosslinking the interfiber bond strength increased from a bond transmitting neither axial nor rotational loads (pin joint) to a bond strength capable of both (welded joint). For non-linear elastic stiffening, stacked fiber bundles with four embracing fibers were created forming microstructural rhombus shapes. Loading the rhombus diagonally allowed generation of "soft tissue"-like mechanics. By adjustment of stacking angles, the point of strong increase in stress is tuned. While the highest stresses are observed in aligned and crosslinked fiber mats along the direction of the fiber, the strongest shape-memory actuation behavior is found in randomly oriented fiber mats. Fiber mesh actuators controlled by temperature are of high significance as soft robot skins and as for active patches supporting tissue regeneration.},
language = {en}
}
@article{HermanussenErofeevScheffler2022,
author = {Hermanussen, Michael and Erofeev, Sergei and Scheffler, Christiane},
title = {The socio-endocrine regulation of human growth},
series = {Acta paediatrica : nurturing the child},
journal = {Acta paediatrica : nurturing the child},
publisher = {Wiley},
address = {Hoboken},
issn = {0803-5253},
doi = {10.1111/apa.16504},
pages = {5},
year = {2022},
abstract = {Aim Growth is a multifarious phenomenon that has been studied by nutritionists, economists, paediatric endocrinologists; archaeologists, child psychologists and other experts. Yet, a unifying theory of understanding growth regulation is still lacking. Method Critical review of the literature. Results We summarise evidence linking social competition and its effect on hierarchies in social structures, with the neuronal networks of the ventromedial hypothalamus and body size. The endocrine signalling system regulating growth hormone, Insulin-like-Growth-Factor1 and skeletal growth, is well conserved in the evolution of vertebrata for some 400 million years. The link between size and status permits adaptive plasticity, competitive growth and strategic growth adjustments also in humans. Humans perceive size as a signal of dominance with tallness being favoured and particularly prevalent in the upper social classes. Conclusion Westernised societies are competitive. People are tall, and "open to change." Social values include striving for status and prestige implying socio-economic domination. We consider the transition of political and social values following revolutions and civil wars, as key elements that interact with the evolutionarily conserved neuroendocrine competence for adaptive developmental plasticity, overstimulate the hypothalamic growth regulation and finally lead to the recent historic increases in average height.},
language = {en}
}
@article{BaralRoenschRichteretal.2022,
author = {Baral, Hans Otto and R{\"o}nsch, Peter and Richter, Udo and Urban, Alexander and Kruse, Julia and Bemmann, Martin and Kummer, Volker and Javier Valencia, Francisco and Huth, Wolfgang},
title = {Schroeteria decaisneana, S. poeltii, and Ciboria ploettneriana (Sclerotiniaceae, Helotiales, Ascomycota), three parasites on Veronica seeds},
series = {Mycological progress : international journal of the German Mycological Society},
volume = {21},
journal = {Mycological progress : international journal of the German Mycological Society},
number = {1},
publisher = {Springer},
address = {Berlin ; Heidelberg},
issn = {1617-416X},
doi = {10.1007/s11557-021-01742-4},
pages = {359 -- 407},
year = {2022},
abstract = {Ciboria ploettneriana, Schroeteria decaisneana, and S. poeltii produce morphologically very similar apothecia emerging from fallen stromatized seeds of Veronica spp., the former two on V. hederifolia agg. in temperate central Europe and S. poeltii on V. cymbalaria in mediterranean southern Europe. They are described and illustrated in detail based on fresh collections or moist chamber cultures of infected seeds. A key is provided to differentiate the three species from their teleomorphs. For the first time, connections between two teleomorphs and two Schroeteria anamorphs are reported. Members of the anamorph-typified genus Schroeteria are known as host-specific plant parasites that infect seeds of different Veronica spp. In earlier times, they were classified in the Ustilaginales (Basidiomycota), but since more than 30 years, they are referred to as false smut fungi producing smut-like chlamydospores, based on light microscopic and ultrastructural studies which referred them to the Sclerotiniaceae (Helotiales). During the present study, rDNA sequences were obtained for the first time from chlamydospores of Schroeteria bornmuelleri (on V. rubrifolia), S. decaisneana (on V. hederifolia), S. delastrina (generic type, on V. arvensis), and S. poeltii (on V. cymbalaria) and from apothecia of C. ploettneriana, S. decaisneana, and S. poeltii. As a result, the anamorph-teleomorph connection could be established for S. decaisneana and S. poeltii by a 100\% ITS similarity, whereas C. ploettneriana could not be connected to a smut-like anamorph. Ciboria ploettneriana in the here-redefined sense clustered in our combined phylogenetic analyses of ITS and LSU in relationship of Sclerotinia s.l., Botrytis, and Myriosclerotinia rather than Ciboria, but its placement was not supported. Its affiliation in Ciboria was retained until a better solution is found. Also Schroeteria poeltii clustered unresolved in this relationship but with a much higher molecular distance. The remaining three Schroeteria spp. formed a strongly supported monophyletic group, here referred to as "Schroeteria core clade", which clustered with medium to high support as a sister clade of Monilinia jezoensis, a member of the Monilinia alpina group of section Disjunctoriae. We observed ITS distances of 5-6.3\% among members of the Schroeteria core clade, but 13.8-14.7\% between this clade and S. poeltii, which appears to be correlated with the deviating chlamydospore morphology of S. poeltii. Despite its apparent paraphyly, Schroeteria is accepted here in a wide sense as a genus distinct from Monilinia, particularly because of its very special anamorphs. A comparable heterogeneity in rDNA analyses was observed in Monilinia and other genera of Sclerotiniaceae. Such apparent heterogeneity should be met with skepticism, however, because the inclusion of protein-coding genes in phylogenetic analyses resulted in a monophyletic genus Monilinia. More sclerotiniaceous taxa should be analysed for protein-coding genes in the future, including Schroeteria. Four syntype specimens of Ciboria ploettneriana in B were reexamined in the present study, revealing a mixture of the two species growing on V. hederifolia agg. Based on its larger ascospores in comparison with S. decaisneana, a lectotype is proposed for C. ploettneriana.},
language = {en}
}
@article{BergholzSittelRistowetal.2022,
author = {Bergholz, Kolja and Sittel, Lara-Pauline and Ristow, Michael and Jeltsch, Florian and Weiss, Lina},
title = {Pollinator guilds respond contrastingly at different scales to landscape parameters of land-use intensity},
series = {Ecology and evolution},
volume = {12},
journal = {Ecology and evolution},
number = {3},
publisher = {Wiley},
address = {Hoboken},
issn = {2045-7758},
doi = {10.1002/ece3.8708},
pages = {11},
year = {2022},
abstract = {Land-use intensification is the main factor for the catastrophic decline of insect pollinators. However, land-use intensification includes multiple processes that act across various scales and should affect pollinator guilds differently depending on their ecology. We aimed to reveal how two main pollinator guilds, wild bees and hoverflies, respond to different land-use intensification measures, that is, arable field cover (AFC), landscape heterogeneity (LH), and functional flower composition of local plant communities as a measure of habitat quality. We sampled wild bees and hoverflies on 22 dry grassland sites within a highly intensified landscape (NE Germany) within three campaigns using pan traps. We estimated AFC and LH on consecutive radii (60-3000 m) around the dry grassland sites and estimated the local functional flower composition. Wild bee species richness and abundance was positively affected by LH and negatively by AFC at small scales (140-400 m). In contrast, hoverflies were positively affected by AFC and negatively by LH at larger scales (500-3000 m), where both landscape parameters were negatively correlated to each other. At small spatial scales, though, LH had a positive effect on hoverfly abundance. Functional flower diversity had no positive effect on pollinators, but conspicuous flowers seem to attract abundance of hoverflies. In conclusion, landscape parameters contrarily affect two pollinator guilds at different scales. The correlation of landscape parameters may influence the observed relationships between landscape parameters and pollinators. Hence, effects of land-use intensification seem to be highly landscape-specific.},
language = {en}
}
@article{BergholzSittelRistowetal.2022,
author = {Bergholz, Kolja and Sittel, Lara-Pauline and Ristow, Michael and Jeltsch, Florian and Weiß, Lina},
title = {Pollinator guilds respond contrastingly at different scales to landscape parameters of land-use intensity},
series = {Ecology and Evolution},
volume = {12},
journal = {Ecology and Evolution},
number = {3},
publisher = {John Wiley \& Sons, Inc.},
address = {Hoboken (New Jersey)},
issn = {2045-7758},
doi = {10.1002/ece3.8708},
pages = {11},
year = {2022},
abstract = {Land-use intensification is the main factor for the catastrophic decline of insect pollinators. However, land-use intensification includes multiple processes that act across various scales and should affect pollinator guilds differently depending on their ecology. We aimed to reveal how two main pollinator guilds, wild bees and hoverflies, respond to different land-use intensification measures, that is, arable field cover (AFC), landscape heterogeneity (LH), and functional flower composition of local plant communities as a measure of habitat quality. We sampled wild bees and hoverflies on 22 dry grassland sites within a highly intensified landscape (NE Germany) within three campaigns using pan traps. We estimated AFC and LH on consecutive radii (60-3000 m) around the dry grassland sites and estimated the local functional flower composition. Wild bee species richness and abundance was positively affected by LH and negatively by AFC at small scales (140-400 m). In contrast, hoverflies were positively affected by AFC and negatively by LH at larger scales (500-3000 m), where both landscape parameters were negatively correlated to each other. At small spatial scales, though, LH had a positive effect on hoverfly abundance. Functional flower diversity had no positive effect on pollinators, but conspicuous flowers seem to attract abundance of hoverflies. In conclusion, landscape parameters contrarily affect two pollinator guilds at different scales. The correlation of landscape parameters may influence the observed relationships between landscape parameters and pollinators. Hence, effects of land-use intensification seem to be highly landscape-specific.},
language = {en}
}
@article{EccardHerdeSchusteretal.2022,
author = {Eccard, Jana and Herde, Antje and Schuster, Andrea C. and Liesenjohann, Thilo and Knopp, Tatjana and Heckel, Gerald and Dammhahn, Melanie},
title = {Fitness, risk taking, and spatial behavior covary with boldness in experimental vole populations},
series = {Ecology And Evolution},
journal = {Ecology And Evolution},
publisher = {John Wiley \& Sons, Inc.},
address = {Vereinigte Staaten},
issn = {2045-7758},
doi = {10.1002/ece3.8521},
pages = {1 -- 15},
year = {2022},
abstract = {Individuals of a population may vary along a pace-of-life syndrome from highly fecund, short-lived, bold, dispersive "fast" types at one end of the spectrum to less fecund, long-lived, shy, plastic "slow" types at the other end. Risk-taking behavior might mediate the underlying life history trade-off, but empirical evidence supporting this hypothesis is still ambiguous. Using experimentally created populations of common voles (Microtus arvalis)—a species with distinct seasonal life history trajectories—we aimed to test whether individual differences in boldness behavior covary with risk taking, space use, and fitness. We quantified risk taking, space use (via automated tracking), survival, and reproductive success (via genetic parentage analysis) in 8 to 14 experimental, mixed-sex populations of 113 common voles of known boldness type in large grassland enclosures over a significant part of their adult life span and two reproductive events. Populations were assorted to contain extreme boldness types (bold or shy) of both sexes. Bolder individuals took more risks than shyer ones, which did not affect survival. Bolder males but not females produced more offspring than shy conspecifics. Daily home range and core area sizes, based on 95\% and 50\% Kernel density estimates (20 ± 10 per individual, n = 54 individuals), were highly repeatable over time. Individual space use unfolded differently for sex-boldness type combinations over the course of the experiment. While day ranges decreased for shy females, they increased for bold females and all males. Space use trajectories may, hence, indicate differences in coping styles when confronted with a novel social and physical environment. Thus, interindividual differences in boldness predict risk taking under near-natural conditions and have consequences for fitness in males, which have a higher reproductive potential than females. Given extreme inter- and intra-annual fluctuations in population density in the study species and its short life span, density-dependent fluctuating selection operating differently on the sexes might maintain (co)variation in boldness, risk taking, and pace-of-life.},
language = {en}
}