TY  - GEN
A1  - de Vera, Jean-Pierre Paul
A1  - Alawi, Mashal
A1  - Backhaus, Theresa
A1  - Baque, Mickael
A1  - Billi, Daniela
A1  - Boettger, Ute
A1  - Berger, Thomas
A1  - Bohmeier, Maria
A1  - Cockell, Charles
A1  - Demets, Rene
A1  - de la Torre Noetzel, Rosa
A1  - Edwards, Howell
A1  - Elsaesser, Andreas
A1  - Fagliarone, Claudia
A1  - Fiedler, Annelie
A1  - Foing, Bernard
A1  - Foucher, Frederic
A1  - Fritz, Jörg
A1  - Hanke, Franziska
A1  - Herzog, Thomas
A1  - Horneck, Gerda
A1  - Hübers, Heinz-Wilhelm
A1  - Huwe, Björn
A1  - Joshi, Jasmin Radha
A1  - Kozyrovska, Natalia
A1  - Kruchten, Martha
A1  - Lasch, Peter
A1  - Lee, Natuschka
A1  - Leuko, Stefan
A1  - Leya, Thomas
A1  - Lorek, Andreas
A1  - Martinez-Frias, Jesus
A1  - Meessen, Joachim
A1  - Moritz, Sophie
A1  - Moeller, Ralf
A1  - Olsson-Francis, Karen
A1  - Onofri, Silvano
A1  - Ott, Sieglinde
A1  - Pacelli, Claudia
A1  - Podolich, Olga
A1  - Rabbow, Elke
A1  - Reitz, Günther
A1  - Rettberg, Petra
A1  - Reva, Oleg
A1  - Rothschild, Lynn
A1  - Garcia Sancho, Leo
A1  - Schulze-Makuch, Dirk
A1  - Selbmann, Laura
A1  - Serrano, Paloma
A1  - Szewzyk, Ulrich
A1  - Verseux, Cyprien
A1  - Wadsworth, Jennifer
A1  - Wagner, Dirk
A1  - Westall, Frances
A1  - Wolter, David
A1  - Zucconi, Laura
T1  - Limits of life and the habitability of Mars
BT  - the ESA space experiment BIOMEX on the ISS
T2  - Astrobiology
N2  - BIOMEX (BIOlogy and Mars EXperiment) is an ESA/Roscosmos space exposure experiment housed within the exposure facility EXPOSE-R2 outside the Zvezda module on the International Space Station (ISS). The design of the multiuser facility supports-among others-the BIOMEX investigations into the stability and level of degradation of space-exposed biosignatures such as pigments, secondary metabolites, and cell surfaces in contact with a terrestrial and Mars analog mineral environment. In parallel, analysis on the viability of the investigated organisms has provided relevant data for evaluation of the habitability of Mars, for the limits of life, and for the likelihood of an interplanetary transfer of life (theory of lithopanspermia). In this project, lichens, archaea, bacteria, cyanobacteria, snow/permafrost algae, meristematic black fungi, and bryophytes from alpine and polar habitats were embedded, grown, and cultured on a mixture of martian and lunar regolith analogs or other terrestrial minerals. The organisms and regolith analogs and terrestrial mineral mixtures were then exposed to space and to simulated Mars-like conditions by way of the EXPOSE-R2 facility. In this special issue, we present the first set of data obtained in reference to our investigation into the habitability of Mars and limits of life. This project was initiated and implemented by the BIOMEX group, an international and interdisciplinary consortium of 30 institutes in 12 countries on 3 continents. Preflight tests for sample selection, results from ground-based simulation experiments, and the space experiments themselves are presented and include a complete overview of the scientific processes required for this space experiment and postflight analysis. The presented BIOMEX concept could be scaled up to future exposure experiments on the Moon and will serve as a pretest in low Earth orbit.
KW  - EXPOSE-R2
KW  - BIOMEX
KW  - Habitability
KW  - Limits of life
KW  - Extremophiles
KW  - Mars
Y1  - 2019
U6  - https://doi.org/10.1089/ast.2018.1897
SN  - 1531-1074
SN  - 1557-8070
VL  - 19
IS  - 2
SP  - 145
EP  - 157
PB  - Liebert
CY  - New Rochelle
ER  - 
TY  - JOUR
A1  - Weisse, Thomas
A1  - Moser, Michael
A1  - Scheffel, Ulrike
A1  - Stadler, Peter
A1  - Berendonk, Thomas U.
A1  - Weithoff, Guntram
A1  - Berger, Helmut
T1  - Systematics and species-specific response to pH of Oxytricha acidotolerans sp nov and Urosomoida sp (Ciliophora, Hypotricha) from acid mining lakes
JF  - European journal of protistology
N2  - We investigated the morphology, phylogeny of the 18S rDNA, and pH response of Oxytricha acidotolerans sp. nov. and Urosomoida sp. (Ciliophora, Hypotricha) isolated from two chemically similar acid mining lakes (pH similar to 2.6) located at Langau, Austria, and in Lusatia, Germany. Oxytricha acidotolerans sp. nov. from Langau has 18 frontal-ventral-transverse cirri but a very indistinct kinety 3 fragmentation so that the assignment to Oxytricha is uncertain. The somewhat smaller species from Lusatia has a highly variable cirral pattern and the dorsal kineties arranged in the Urosomoida pattern and is, therefore, preliminary designated as Urosomoida sp. The pH response was measured as ciliate growth rates in laboratory experiments at pH ranging from 2.5 to 7.0. Our hypothesis was that the shape of the pH reaction norm would not differ between these closely related (3% difference in their SSU rDNA) species. Results revealed a broad pH niche for O. acidotolerans, with growth rates peaking at moderately acidic conditions (pH 5.2). Cyst formation was positively and linearly related to pH. Urosomoida sp. was more sensitive to pH and did not survive at circumneutral pH. Accordingly, we reject our hypothesis that similar habitats would harbour ciliate species with virtually identical pH reaction norm.
KW  - Acid mining lakes
KW  - Growth rates
KW  - pH response
KW  - Oxytricha
KW  - SSU rDNA
KW  - Urosomoida
Y1  - 2013
U6  - https://doi.org/10.1016/j.ejop.2012.08.001
SN  - 0932-4739
VL  - 49
IS  - 2
SP  - 255
EP  - 271
PB  - Elsevier
CY  - Jena
ER  - 
TY  - JOUR
A1  - de Vera, Jean-Pierre Paul
A1  - Böttger, Ute
A1  - de la Torre Nötzel, Rosa
A1  - Sanchez, Francisco J.
A1  - Grunow, Dana
A1  - Schmitz, Nicole
A1  - Lange, Caroline
A1  - Hübers, Heinz-Wilhelm
A1  - Billi, Daniela
A1  - Baque, Mickael
A1  - Rettberg, Petra
A1  - Rabbow, Elke
A1  - Reitz, Günther
A1  - Berger, Thomas
A1  - Möller, Ralf
A1  - Bohmeier, Maria
A1  - Horneck, Gerda
A1  - Westall, Frances
A1  - Jänchen, Jochen
A1  - Fritz, Jörg
A1  - Meyer, Cornelia
A1  - Onofri, Silvano
A1  - Selbmann, Laura
A1  - Zucconi, Laura
A1  - Kozyrovska, Natalia
A1  - Leya, Thomas
A1  - Foing, Bernard
A1  - Demets, Rene
A1  - Cockell, Charles S.
A1  - Bryce, Casey
A1  - Wagner, Dirk
A1  - Serrano, Paloma
A1  - Edwards, Howell G. M.
A1  - Joshi, Jasmin Radha
A1  - Huwe, Björn
A1  - Ehrenfreund, Pascale
A1  - Elsaesser, Andreas
A1  - Ott, Sieglinde
A1  - Meessen, Joachim
A1  - Feyh, Nina
A1  - Szewzyk, Ulrich
A1  - Jaumann, Ralf
A1  - Spohn, Tilman
T1  - Supporting Mars exploration BIOMEX in Low Earth Orbit and further astrobiological studies on the Moon using Raman and PanCam technology
JF  - Planetary and space science
N2  - The Low Earth Orbit (LEO) experiment Biology and Mars Experiment (BIOMEX) is an interdisciplinary and international space research project selected by ESA. The experiment will be accommodated on the space exposure facility EXPOSE-R2 on the International Space Station (ISS) and is foreseen to be launched in 2013. The prime objective of BIOMEX is to measure to what extent biomolecules, such as pigments and cellular components, are resistant to and able to maintain their stability under space and Mars-like conditions. The results of BIOMEX will be relevant for space proven biosignature definition and for building a biosignature data base (e.g. the proposed creation of an international Raman library). The library will be highly relevant for future space missions such as the search for life on Mars. The secondary scientific objective is to analyze to what extent terrestrial extremophiles are able to survive in space and to determine which interactions between biological samples and selected minerals (including terrestrial, Moon- and Mars analogs) can be observed under space and Mars-like conditions. In this context, the Moon will be an additional platform for performing similar experiments with negligible magnetic shielding and higher solar and galactic irradiation compared to LEO. Using the Moon as an additional astrobiological exposure platform to complement ongoing astrobiological LEO investigations could thus enhance the chances of detecting organic traces of life on Mars. We present a lunar lander mission with two related objectives: a lunar lander equipped with Raman and PanCam instruments which can analyze the lunar surface and survey an astrobiological exposure platform. This dual use of testing mission technology together with geo- and astrobiological analyses will significantly increase the science return, and support the human preparation objectives. It will provide knowledge about the Moon's surface itself and, in addition, monitor the stability of life-markers, such as cells, cell components and pigments, in an extraterrestrial environment with much closer radiation properties to the surface of Mars. The combination of a Raman data base of these data together with data from LEO and space simulation experiments, will lead to further progress on the analysis and interpretation of data that we will obtain from future Moon and Mars exploration missions.
KW  - Moon
KW  - Mars
KW  - Low Earth Orbit
KW  - Astrobiology
KW  - Instrumentation
KW  - Spectroscopy
KW  - Biosignature
Y1  - 2012
U6  - https://doi.org/10.1016/j.pss.2012.06.010
SN  - 0032-0633
VL  - 74
IS  - 1
SP  - 103
EP  - 110
PB  - Elsevier
CY  - Oxford
ER  - 
TY  - JOUR
A1  - Berger, Dieter
A1  - Törjek, Otto
A1  - Altmann, Thomas
T1  - Establishment of high-efficiency mapping tools
Y1  - 2004
SN  - 3-00-011587-0
ER  - 
TY  - JOUR
A1  - Altmann, Thomas
A1  - Törjek, Otto
A1  - Berger, Dieter
A1  - Meyer, Rhonda C.
A1  - Müssig, Carsten
A1  - Schmidt, K. J.
A1  - Sorensen, T. R.
A1  - Weisshaar, Bernd
A1  - Olds-Mitchell, T.
T1  - Establishment of a high-efficiency SNP-based framework marker set for Arabidopsis
Y1  - 2003
ER  - 
TY  - JOUR
A1  - Altmann, Thomas
A1  - Schlüter, U.
A1  - Muschak, M.
A1  - Berger, Dieter
T1  - Photosynthetic performance of an Arabidopsis mutant with elevated stomatal density (sdd1-1) under different light regimes
Y1  - 2003
ER  - 
TY  - GEN
A1  - Berger, Thomas
T1  - „Back to the Future“ : German style
KW  - Deutschland
KW  - deutsche Außenpolitik
KW  - Realpolitik
KW  - Zentraleuropa
KW  - Germany
KW  - German foreign policy
KW  - Central Europe
Y1  - 2004
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-47434
ER  - 
TY  - JOUR
A1  - Altmann, Thomas
A1  - von Groll, Uritza
A1  - Berger, Dieter
T1  - The subtilisin-like serine protease SDD1 mediates cell-cell signaling during Arabidopsis stomatal development
Y1  - 2002
ER  - 
TY  - JOUR
A1  - Frenken, Thijs
A1  - Alacid, Elisabet
A1  - Berger, Stella A.
A1  - Bourne, Elizabeth Charlotte
A1  - Gerphagnon, Melanie
A1  - Großart, Hans-Peter
A1  - Gsell, Alena S.
A1  - Ibelings, Bas W.
A1  - Kagami, Maiko
A1  - Kupper, Frithjof C.
A1  - Letcher, Peter M.
A1  - Loyau, Adeline
A1  - Miki, Takeshi
A1  - Nejstgaard, Jens C.
A1  - Rasconi, Serena
A1  - Rene, Albert
A1  - Rohrlack, Thomas
A1  - Rojas-Jimenez, Keilor
A1  - Schmeller, Dirk S.
A1  - Scholz, Bettina
A1  - Seto, Kensuke
A1  - Sime-Ngando, Telesphore
A1  - Sukenik, Assaf
A1  - Van de Waal, Dedmer B.
A1  - Van den Wyngaert, Silke
A1  - Van Donk, Ellen
A1  - Wolinska, Justyna
A1  - Wurzbacher, Christian
A1  - Agha, Ramsy
T1  - Integrating chytrid fungal parasites into plankton ecology: research gaps and needs
JF  - Environmental microbiology
N2  - Chytridiomycota, often referred to as chytrids, can be virulent parasites with the potential to inflict mass mortalities on hosts, causing e.g. changes in phytoplankton size distributions and succession, and the delay or suppression of bloom events. Molecular environmental surveys have revealed an unexpectedly large diversity of chytrids across a wide range of aquatic ecosystems worldwide. As a result, scientific interest towards fungal parasites of phytoplankton has been gaining momentum in the past few years. Yet, we still know little about the ecology of chytrids, their life cycles, phylogeny, host specificity and range. Information on the contribution of chytrids to trophic interactions, as well as co-evolutionary feedbacks of fungal parasitism on host populations is also limited. This paper synthesizes ideas stressing the multifaceted biological relevance of phytoplankton chytridiomycosis, resulting from discussions among an international team of chytrid researchers. It presents our view on the most pressing research needs for promoting the integration of chytrid fungi into aquatic ecology.
Y1  - 2017
U6  - https://doi.org/10.1111/1462-2920.13827
SN  - 1462-2912
SN  - 1462-2920
VL  - 19
SP  - 3802
EP  - 3822
PB  - Wiley
CY  - Hoboken
ER  - 
TY  - JOUR
A1  - Hofman, Maarten P. G.
A1  - Hayward, M. W.
A1  - Heim, M.
A1  - Marchand, P.
A1  - Rolandsen, C. M.
A1  - Mattisson, Jenny
A1  - Urbano, F.
A1  - Heurich, M.
A1  - Mysterud, A.
A1  - Melzheimer, J.
A1  - Morellet, N.
A1  - Voigt, Ulrich
A1  - Allen, B. L.
A1  - Gehr, Benedikt
A1  - Rouco Zufiaurre, Carlos
A1  - Ullmann, Wiebke
A1  - Holand, O.
A1  - Jorgensen, n H.
A1  - Steinheim, G.
A1  - Cagnacci, F.
A1  - Kroeschel, M.
A1  - Kaczensky, P.
A1  - Buuveibaatar, B.
A1  - Payne, J. C.
A1  - Palmegiani, I
A1  - Jerina, K.
A1  - Kjellander, P.
A1  - Johansson, O.
A1  - LaPoint, S.
A1  - Bayrakcismith, R.
A1  - Linnell, J. D. C.
A1  - Zaccaroni, M.
A1  - Jorge, M. L. S.
A1  - Oshima, J. E. F.
A1  - Songhurst, A.
A1  - Fischer, C.
A1  - Mc Bride, R. T.
A1  - Thompson, J. J.
A1  - Streif, S.
A1  - Sandfort, R.
A1  - Bonenfant, Christophe
A1  - Drouilly, M.
A1  - Klapproth, M.
A1  - Zinner, Dietmar
A1  - Yarnell, Richard
A1  - Stronza, A.
A1  - Wilmott, L.
A1  - Meisingset, E.
A1  - Thaker, Maria
A1  - Vanak, A. T.
A1  - Nicoloso, S.
A1  - Graeber, R.
A1  - Said, S.
A1  - Boudreau, M. R.
A1  - Devlin, A.
A1  - Hoogesteijn, R.
A1  - May-Junior, J. A.
A1  - Nifong, J. C.
A1  - Odden, J.
A1  - Quigley, H. B.
A1  - Tortato, F.
A1  - Parker, D. M.
A1  - Caso, A.
A1  - Perrine, J.
A1  - Tellaeche, C.
A1  - Zieba, F.
A1  - Zwijacz-Kozica, T.
A1  - Appel, C. L.
A1  - Axsom, I
A1  - Bean, W. T.
A1  - Cristescu, B.
A1  - Periquet, S.
A1  - Teichman, K. J.
A1  - Karpanty, S.
A1  - Licoppe, A.
A1  - Menges, V
A1  - Black, K.
A1  - Scheppers, Thomas L.
A1  - Schai-Braun, S. C.
A1  - Azevedo, F. C.
A1  - Lemos, F. G.
A1  - Payne, A.
A1  - Swanepoel, L. H.
A1  - Weckworth, B.
A1  - Berger, A.
A1  - Bertassoni, Alessandra
A1  - McCulloch, G.
A1  - Sustr, P.
A1  - Athreya, V
A1  - Bockmuhl, D.
A1  - Casaer, J.
A1  - Ekori, A.
A1  - Melovski, D.
A1  - Richard-Hansen, C.
A1  - van de Vyver, D.
A1  - Reyna-Hurtado, R.
A1  - Robardet, E.
A1  - Selva, N.
A1  - Sergiel, A.
A1  - Farhadinia, M. S.
A1  - Sunde, P.
A1  - Portas, R.
A1  - Ambarli, Hüseyin
A1  - Berzins, R.
A1  - Kappeler, P. M.
A1  - Mann, G. K.
A1  - Pyritz, L.
A1  - Bissett, C.
A1  - Grant, T.
A1  - Steinmetz, R.
A1  - Swedell, Larissa
A1  - Welch, R. J.
A1  - Armenteras, D.
A1  - Bidder, O. R.
A1  - Gonzalez, T. M.
A1  - Rosenblatt, A.
A1  - Kachel, S.
A1  - Balkenhol, N.
T1  - Right on track?
BT  - Performance of satellite telemetry in terrestrial wildlife research
JF  - PLoS one
N2  - Satellite telemetry is an increasingly utilized technology in wildlife research, and current devices can track individual animal movements at unprecedented spatial and temporal resolutions. However, as we enter the golden age of satellite telemetry, we need an in-depth understanding of the main technological, species-specific and environmental factors that determine the success and failure of satellite tracking devices across species and habitats. Here, we assess the relative influence of such factors on the ability of satellite telemetry units to provide the expected amount and quality of data by analyzing data from over 3,000 devices deployed on 62 terrestrial species in 167 projects worldwide. We evaluate the success rate in obtaining GPS fixes as well as in transferring these fixes to the user and we evaluate failure rates. Average fix success and data transfer rates were high and were generally better predicted by species and unit characteristics, while environmental characteristics influenced the variability of performance. However, 48% of the unit deployments ended prematurely, half of them due to technical failure. Nonetheless, this study shows that the performance of satellite telemetry applications has shown improvements over time, and based on our findings, we provide further recommendations for both users and manufacturers.
Y1  - 2019
U6  - https://doi.org/10.1371/journal.pone.0216223
SN  - 1932-6203
VL  - 14
IS  - 5
PB  - PLoS
CY  - San Fransisco
ER  -