Response of methanogens from Siberian permafrost to extreme conditions of terrestrial and extraterrestrial permafrost
The characterization of survival potential of microorganisms which are able to thrive in extreme environments are receiving a great attention in astrobioogical research as driven by the possibility of their existence in extraterrestrial extreme niches. Since ESA mission Mars Express determined water...
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ftawi:oai:epic.awi.de:15427 2023-05-15T17:56:05+02:00 Response of methanogens from Siberian permafrost to extreme conditions of terrestrial and extraterrestrial permafrost Morozova, Daria Wagner, Dirk 2006 application/pdf https://epic.awi.de/id/eprint/15427/ https://epic.awi.de/id/eprint/15427/1/Mor2006h.pdf https://hdl.handle.net/10013/epic.25571 https://hdl.handle.net/10013/epic.25571.d001 unknown https://epic.awi.de/id/eprint/15427/1/Mor2006h.pdf https://hdl.handle.net/10013/epic.25571.d001 Morozova, D. and Wagner, D. (2006) Response of methanogens from Siberian permafrost to extreme conditions of terrestrial and extraterrestrial permafrost , Annual Conference of the association for general and applied Microbiology, 19-22 March, Jena, Germany. . hdl:10013/epic.25571 EPIC3Annual Conference of the association for general and applied Microbiology, 19-22 March, Jena, Germany. Conference notRev 2006 ftawi 2021-12-24T15:31:16Z The characterization of survival potential of microorganisms which are able to thrive in extreme environments are receiving a great attention in astrobioogical research as driven by the possibility of their existence in extraterrestrial extreme niches. Since ESA mission Mars Express determined water on Mars, fundamental requirement for life, and presence of CH4 in the Martian atmosphere, which could be originated only from active volcanism or from biological sources, it is obviously that microbial life could still exist on Mars, for example in form of subsurface lithoautotrophic ecosystems, which are also exist in permafrost regions on Earth.Present work deals with the resistance investigation of methanogenic archaea from Siberian permafrost to different extreme life conditions of terrestrial or extraterrestrial permafrost: desiccation, temperature extremes, radiation, high salt concentration and simulated Mars conditions. The methanogenic archaea in pure cultures as well as in their natural environment of Siberian permafrost represent high survival potential under these extreme conditions. Significant CH4 formation appeared even by incubation with saturated salt solution (0.02 nmol CH4 h-1 g-1), radiation dose up to 5000 Jm-2 (0.8 nmol CH4 h 1 g 1), desiccation for more than 3 weeks (5.24 nmol CH4 h-1 ml-1), extremely low temperatures of -80°C (5.57 nmol CH4 h-1 ml-1) and Mars simulation for 22 days. Investigation of the survival potential of these high specialized organisms can provide a unique insight to explore the life on the red planet. Conference Object permafrost Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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The characterization of survival potential of microorganisms which are able to thrive in extreme environments are receiving a great attention in astrobioogical research as driven by the possibility of their existence in extraterrestrial extreme niches. Since ESA mission Mars Express determined water on Mars, fundamental requirement for life, and presence of CH4 in the Martian atmosphere, which could be originated only from active volcanism or from biological sources, it is obviously that microbial life could still exist on Mars, for example in form of subsurface lithoautotrophic ecosystems, which are also exist in permafrost regions on Earth.Present work deals with the resistance investigation of methanogenic archaea from Siberian permafrost to different extreme life conditions of terrestrial or extraterrestrial permafrost: desiccation, temperature extremes, radiation, high salt concentration and simulated Mars conditions. The methanogenic archaea in pure cultures as well as in their natural environment of Siberian permafrost represent high survival potential under these extreme conditions. Significant CH4 formation appeared even by incubation with saturated salt solution (0.02 nmol CH4 h-1 g-1), radiation dose up to 5000 Jm-2 (0.8 nmol CH4 h 1 g 1), desiccation for more than 3 weeks (5.24 nmol CH4 h-1 ml-1), extremely low temperatures of -80°C (5.57 nmol CH4 h-1 ml-1) and Mars simulation for 22 days. Investigation of the survival potential of these high specialized organisms can provide a unique insight to explore the life on the red planet. |
format |
Conference Object |
author |
Morozova, Daria Wagner, Dirk |
spellingShingle |
Morozova, Daria Wagner, Dirk Response of methanogens from Siberian permafrost to extreme conditions of terrestrial and extraterrestrial permafrost |
author_facet |
Morozova, Daria Wagner, Dirk |
author_sort |
Morozova, Daria |
title |
Response of methanogens from Siberian permafrost to extreme conditions of terrestrial and extraterrestrial permafrost |
title_short |
Response of methanogens from Siberian permafrost to extreme conditions of terrestrial and extraterrestrial permafrost |
title_full |
Response of methanogens from Siberian permafrost to extreme conditions of terrestrial and extraterrestrial permafrost |
title_fullStr |
Response of methanogens from Siberian permafrost to extreme conditions of terrestrial and extraterrestrial permafrost |
title_full_unstemmed |
Response of methanogens from Siberian permafrost to extreme conditions of terrestrial and extraterrestrial permafrost |
title_sort |
response of methanogens from siberian permafrost to extreme conditions of terrestrial and extraterrestrial permafrost |
publishDate |
2006 |
url |
https://epic.awi.de/id/eprint/15427/ https://epic.awi.de/id/eprint/15427/1/Mor2006h.pdf https://hdl.handle.net/10013/epic.25571 https://hdl.handle.net/10013/epic.25571.d001 |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
EPIC3Annual Conference of the association for general and applied Microbiology, 19-22 March, Jena, Germany. |
op_relation |
https://epic.awi.de/id/eprint/15427/1/Mor2006h.pdf https://hdl.handle.net/10013/epic.25571.d001 Morozova, D. and Wagner, D. (2006) Response of methanogens from Siberian permafrost to extreme conditions of terrestrial and extraterrestrial permafrost , Annual Conference of the association for general and applied Microbiology, 19-22 March, Jena, Germany. . hdl:10013/epic.25571 |
_version_ |
1766164157419225088 |