TY  - GEN
A1  - Gamba, Cristina
A1  - Jones, Eppie R.
A1  - Teasdale, Matthew D.
A1  - McLaughlin, Russell L.
A1  - González-Fortes, Gloria M.
A1  - Mattiangeli, Valeria
A1  - Domboróczki, László
A1  - Kővári, Ivett
A1  - Pap, Ildikó
A1  - Anders, Alexandra
A1  - Whittle, Alasdair
A1  - Dani, János
A1  - Raczky, Pál
A1  - Higham, Thomas F. G.
A1  - Hofreiter, Michael
A1  - Bradley, Daniel G.
A1  - Pinhasi, Ron
T1  - Genome flux and stasis in a five millennium transect of European prehistory
T2  - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe
N2  - The Great Hungarian Plain was a crossroads of cultural transformations that have shaped European prehistory. Here we analyse a 5,000-year transect of human genomes, sampled from petrous bones giving consistently excellent endogenous DNA yields, from 13 Hungarian Neolithic, Copper, Bronze and Iron Age burials including two to high (similar to 22x) and seven to similar to 1x coverage, to investigate the impact of these on Europe's genetic landscape. These data suggest genomic shifts with the advent of the Neolithic, Bronze and Iron Ages, with interleaved periods of genome stability. The earliest Neolithic context genome shows a European hunter-gatherer genetic signature and a restricted ancestral population size, suggesting direct contact between cultures after the arrival of the first farmers into Europe. The latest, Iron Age, sample reveals an eastern genomic influence concordant with introduced Steppe burial rites. We observe transition towards lighter pigmentation and surprisingly, no Neolithic presence of lactase persistence.
T3  - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 1332 
KW  - ancient DNA
KW  - lactase-persistence
KW  - positive selection
KW  - patterns
KW  - sequence
KW  - farmers
KW  - pigmentation
KW  - homozygosity
KW  - ancestry
KW  - skin
Y1  - 2014
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-437999
SN  - 1866-8372
VL  - 5
IS  - 1332
ER  - 
TY  - JOUR
A1  - Nitze, Ingmar
A1  - Grosse, Guido
A1  - Jones, Benjamin M.
A1  - Arp, Christopher D.
A1  - Ulrich, Mathias
A1  - Fedorov, Alexander
A1  - Veremeeva, Alexandra
T1  - Landsat-Based Trend Analysis of Lake Dynamics across Northern Permafrost Regions
JF  - Remote sensing
N2  - Lakes are a ubiquitous landscape feature in northern permafrost regions. They have a strong impact on carbon, energy and water fluxes and can be quite responsive to climate change. The monitoring of lake change in northern high latitudes, at a sufficiently accurate spatial and temporal resolution, is crucial for understanding the underlying processes driving lake change. To date, lake change studies in permafrost regions were based on a variety of different sources, image acquisition periods and single snapshots, and localized analysis, which hinders the comparison of different regions. Here, we present a methodology based on machine-learning based classification of robust trends of multi-spectral indices of Landsat data (TM, ETM+, OLI) and object-based lake detection, to analyze and compare the individual, local and regional lake dynamics of four different study sites (Alaska North Slope, Western Alaska, Central Yakutia, Kolyma Lowland) in the northern permafrost zone from 1999 to 2014. Regional patterns of lake area change on the Alaska North Slope (-0.69%), Western Alaska (-2.82%), and Kolyma Lowland (-0.51%) largely include increases due to thermokarst lake expansion, but more dominant lake area losses due to catastrophic lake drainage events. In contrast, Central Yakutia showed a remarkable increase in lake area of 48.48%, likely resulting from warmer and wetter climate conditions over the latter half of the study period. Within all study regions, variability in lake dynamics was associated with differences in permafrost characteristics, landscape position (i.e., upland vs. lowland), and surface geology. With the global availability of Landsat data and a consistent methodology for processing the input data derived from robust trends of multi-spectral indices, we demonstrate a transferability, scalability and consistency of lake change analysis within the northern permafrost region.
KW  - lake dynamics
KW  - lake change
KW  - permafrost region
KW  - Landsat
KW  - Alaska
KW  - Siberia
KW  - thermokarst
KW  - trend analysis
KW  - machine-learning
Y1  - 2017
U6  - https://doi.org/10.3390/rs9070640
SN  - 2072-4292
VL  - 9
PB  - MDPI
CY  - Basel
ER  - 
TY  - JOUR
A1  - Read, Betsy A.
A1  - Kegel, Jessica
A1  - Klute, Mary J.
A1  - Kuo, Alan
A1  - Lefebvre, Stephane C.
A1  - Maumus, Florian
A1  - Mayer, Christoph
A1  - Miller, John
A1  - Monier, Adam
A1  - Salamov, Asaf
A1  - Young, Jeremy
A1  - Aguilar, Maria
A1  - Claverie, Jean-Michel
A1  - Frickenhaus, Stephan
A1  - Gonzalez, Karina
A1  - Herman, Emily K.
A1  - Lin, Yao-Cheng
A1  - Napier, Johnathan
A1  - Ogata, Hiroyuki
A1  - Sarno, Analissa F.
A1  - Shmutz, Jeremy
A1  - Schroeder, Declan
A1  - de Vargas, Colomban
A1  - Verret, Frederic
A1  - von Dassow, Peter
A1  - Valentin, Klaus
A1  - Van de Peer, Yves
A1  - Wheeler, Glen
A1  - Dacks, Joel B.
A1  - Delwiche, Charles F.
A1  - Dyhrman, Sonya T.
A1  - Glöckner, Gernot
A1  - John, Uwe
A1  - Richards, Thomas
A1  - Worden, Alexandra Z.
A1  - Zhang, Xiaoyu
A1  - Grigoriev, Igor V.
A1  - Allen, Andrew E.
A1  - Bidle, Kay
A1  - Borodovsky, M.
A1  - Bowler, C.
A1  - Brownlee, Colin
A1  - Cock, J. Mark
A1  - Elias, Marek
A1  - Gladyshev, Vadim N.
A1  - Groth, Marco
A1  - Guda, Chittibabu
A1  - Hadaegh, Ahmad
A1  - Iglesias-Rodriguez, Maria Debora
A1  - Jenkins, J.
A1  - Jones, Bethan M.
A1  - Lawson, Tracy
A1  - Leese, Florian
A1  - Lindquist, Erika
A1  - Lobanov, Alexei
A1  - Lomsadze, Alexandre
A1  - Malik, Shehre-Banoo
A1  - Marsh, Mary E.
A1  - Mackinder, Luke
A1  - Mock, Thomas
A1  - Müller-Röber, Bernd
A1  - Pagarete, Antonio
A1  - Parker, Micaela
A1  - Probert, Ian
A1  - Quesneville, Hadi
A1  - Raines, Christine
A1  - Rensing, Stefan A.
A1  - Riano-Pachon, Diego Mauricio
A1  - Richier, Sophie
A1  - Rokitta, Sebastian
A1  - Shiraiwa, Yoshihiro
A1  - Soanes, Darren M.
A1  - van der Giezen, Mark
A1  - Wahlund, Thomas M.
A1  - Williams, Bryony
A1  - Wilson, Willie
A1  - Wolfe, Gordon
A1  - Wurch, Louie L.
T1  - Pan genome of the phytoplankton Emiliania underpins its global distribution
JF  - Nature : the international weekly journal of science
N2  - Coccolithophores have influenced the global climate for over 200 million years(1). These marine phytoplankton can account for 20 per cent of total carbon fixation in some systems(2). They form blooms that can occupy hundreds of thousands of square kilometres and are distinguished by their elegantly sculpted calcium carbonate exoskeletons (coccoliths), rendering them visible from space(3). Although coccolithophores export carbon in the form of organic matter and calcite to the sea floor, they also release CO2 in the calcification process. Hence, they have a complex influence on the carbon cycle, driving either CO2 production or uptake, sequestration and export to the deep ocean(4). Here we report the first haptophyte reference genome, from the coccolithophore Emiliania huxleyi strain CCMP1516, and sequences from 13 additional isolates. Our analyses reveal a pan genome (core genes plus genes distributed variably between strains) probably supported by an atypical complement of repetitive sequence in the genome. Comparisons across strains demonstrate that E. huxleyi, which has long been considered a single species, harbours extensive genome variability reflected in different metabolic repertoires. Genome variability within this species complex seems to underpin its capacity both to thrive in habitats ranging from the equator to the subarctic and to form large-scale episodic blooms under a wide variety of environmental conditions.
Y1  - 2013
U6  - https://doi.org/10.1038/nature12221
SN  - 0028-0836
SN  - 1476-4687
VL  - 499
IS  - 7457
SP  - 209
EP  - 213
PB  - Nature Publ. Group
CY  - London
ER  - 
TY  - JOUR
A1  - Gamba, Cristina
A1  - Jones, Eppie R.
A1  - Teasdale, Matthew D.
A1  - McLaughlin, Russell L.
A1  - González-Fortes, Gloria M.
A1  - Mattiangeli, Valeria
A1  - Domboroczki, Laszlo
A1  - Kovari, Ivett
A1  - Pap, Ildiko
A1  - Anders, Alexandra
A1  - Whittle, Alasdair
A1  - Dani, Janos
A1  - Raczky, Pal
A1  - Higham, Thomas F. G.
A1  - Hofreiter, Michael
A1  - Bradley, Daniel G.
A1  - Pinhasi, Ron
T1  - Genome flux and stasis in a five millennium transect of European prehistory
JF  - Nature Communications
N2  - The Great Hungarian Plain was a crossroads of cultural transformations that have shaped European prehistory. Here we analyse a 5,000-year transect of human genomes, sampled from petrous bones giving consistently excellent endogenous DNA yields, from 13 Hungarian Neolithic, Copper, Bronze and Iron Age burials including two to high (similar to 22x) and seven to similar to 1x coverage, to investigate the impact of these on Europe's genetic landscape. These data suggest genomic shifts with the advent of the Neolithic, Bronze and Iron Ages, with interleaved periods of genome stability. The earliest Neolithic context genome shows a European hunter-gatherer genetic signature and a restricted ancestral population size, suggesting direct contact between cultures after the arrival of the first farmers into Europe. The latest, Iron Age, sample reveals an eastern genomic influence concordant with introduced Steppe burial rites. We observe transition towards lighter pigmentation and surprisingly, no Neolithic presence of lactase persistence.
Y1  - 2014
U6  - https://doi.org/10.1038/ncomms6257
SN  - 2041-1723
VL  - 5
PB  - Nature Publ. Group
CY  - London
ER  - 
TY  - JOUR
A1  - Üstün, Suayib
A1  - Sheikh, Arsheed
A1  - Gimenez-Ibanez, Selena
A1  - Jones, Alexandra
A1  - Ntoukakis, Vardis
A1  - Börnke, Frederik
T1  - The Proteasome Acts as a Hub for Plant Immunity and Is Targeted by Pseudomonas Type III Effectors
JF  - Plant physiology : an international journal devoted to physiology, biochemistry, cellular and molecular biology, biophysics and environmental biology of plants
N2  - Recent evidence suggests that the ubiquitin-proteasome system is involved in several aspects of plant immunity and that a range of plant pathogens subvert the ubiquitin-proteasome system to enhance their virulence. Here, we show that proteasome activity is strongly induced during basal defense in Arabidopsis (Arabidopsis thaliana). Mutant lines of the proteasome subunits RPT2a and RPN12a support increased bacterial growth of virulent Pseudomonas syringae pv tomato DC3000 (Pst) and Pseudomonas syringae pv maculicola ES4326. Both proteasome subunits are required for pathogen-associated molecular pattern-triggered immunity responses. Analysis of bacterial growth after a secondary infection of systemic leaves revealed that the establishment of systemic acquired resistance (SAR) is impaired in proteasome mutants, suggesting that the proteasome also plays an important role in defense priming and SAR. In addition, we show that Pst inhibits proteasome activity in a type III secretion-dependent manner. A screen for type III effector proteins from Pst for their ability to interfere with proteasome activity revealed HopM1, HopAO1, HopA1, and HopG1 as putative proteasome inhibitors. Biochemical characterization of HopM1 by mass spectrometry indicates that HopM1 interacts with several E3 ubiquitin ligases and proteasome subunits. This supports the hypothesis that HopM1 associates with the proteasome, leading to its inhibition. Thus, the proteasome is an essential component of pathogen-associated molecular pattern-triggered immunity and SAR, which is targeted by multiple bacterial effectors.
Y1  - 2016
U6  - https://doi.org/10.1104/pp.16.00808
SN  - 0032-0889
SN  - 1532-2548
VL  - 172
SP  - 1941
EP  - 1958
PB  - American Society of Plant Physiologists
CY  - Rockville
ER  - 
TY  - JOUR
A1  - Jones, Benjamin M.
A1  - Grosse, Guido
A1  - Farquharson, Louise M.
A1  - Roy-Léveillée, Pascale
A1  - Veremeeva, Alexandra
A1  - Kanevskiy, Mikhail Z.
A1  - Gaglioti, Benjamin
A1  - Breen, Amy L.
A1  - Parsekian, Andrew D.
A1  - Ulrich, Mathias
A1  - Hinkel, Kenneth M.
T1  - Lake and drained lake basin systems in lowland permafrost regions
JF  - Nature reviews earth and environment
N2  - The formation, growth and drainage of lakes in Arctic and boreal lowland permafrost regions influence landscape and ecosystem processes. These lake and drained lake basin (L-DLB) systems occupy >20% of the circumpolar Northern Hemisphere permafrost region and similar to 50% of the area below 300 m above sea level. Climate change is causing drastic impacts to L-DLB systems, with implications for permafrost dynamics, ecosystem functioning, biogeochemical processes and human livelihoods in lowland permafrost regions. In this Review, we discuss how an increase in the number of lakes as a result of permafrost thaw and an intensifying hydrologic regime are not currently offsetting the land area gained through lake drainage, enhancing the dominance of drained lake basins (DLBs).The contemporary transition from lakes to DLBs decreases hydrologic storage, leads to permafrost aggradation, increases carbon sequestration and diversifies the shifting habitat mosaic in Arctic and boreal regions. However, further warming could inhibit permafrost aggradation in DLBs, disrupting the trajectory of important microtopographic controls on carbon fluxes and ecosystem processes in permafrost-region L-DLB systems. Further research is needed to understand the future dynamics of L-DLB systems to improve Earth system models, permafrost carbon feedback assessments, permafrost hydrology linkages, infrastructure development in permafrost regions and the well-being of northern socio-ecological systems.
Y1  - 2022
U6  - https://doi.org/10.1038/s43017-021-00238-9
SN  - 2662-138X
VL  - 3
IS  - 1
SP  - 85
EP  - 98
PB  - Springer Nature
CY  - London
ER  -