Laser spectroscopic real time measurements of methanogenic activity under simulated Martian subsurface analog conditions
On Earth, chemolithoautothrophic and anaerobic microorganisms such as methanogenic archaea are regarded as model organisms for possible subsurface life on Mars. For this reason, the methanogenic strain Methanosarcina soligelidi (formerly called Methanosarcina spec. SMA-21), isolated from permafrost-...
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ftdlr:oai:elib.dlr.de:94140 2023-05-15T17:58:01+02:00 Laser spectroscopic real time measurements of methanogenic activity under simulated Martian subsurface analog conditions Schirmack, J. Böhm, M. Brauer, C. Löhmannsröben, H.G. de Vera, Jean Pierre Paul Möhlmann, D. Wagner, D. 2014-08-31 application/pdf https://elib.dlr.de/94140/ https://elib.dlr.de/94140/1/1-s2.0-S0032063313002249-main.pdf en eng Elsevier https://elib.dlr.de/94140/1/1-s2.0-S0032063313002249-main.pdf Schirmack, J. und Böhm, M. und Brauer, C. und Löhmannsröben, H.G. und de Vera, Jean Pierre Paul und Möhlmann, D. und Wagner, D. (2014) Laser spectroscopic real time measurements of methanogenic activity under simulated Martian subsurface analog conditions. Planetary and Space Science, 98, Seiten 198-204. Elsevier. DOI:10.1016/j.pss.2013.08.019 <https://doi.org/10.1016/j.pss.2013.08.019> ISSN 0032-0633 Experimentelle Planetenphysik Zeitschriftenbeitrag PeerReviewed 2014 ftdlr https://doi.org/10.1016/j.pss.2013.08.019 2019-08-04T22:57:34Z On Earth, chemolithoautothrophic and anaerobic microorganisms such as methanogenic archaea are regarded as model organisms for possible subsurface life on Mars. For this reason, the methanogenic strain Methanosarcina soligelidi (formerly called Methanosarcina spec. SMA-21), isolated from permafrost-affected soil in northeast Siberia, has been tested under Martian thermo-physicalconditions. In previous studies under simulated Martian conditions, high survival rates of these microorganisms were observed. In our study we present a method to measure methane production as a first attempt to study metabolic activity of methanogenic archaea during simulated conditions approaching conditions of Mars-like environments.To determine methanogenic activity, a measurement technique which is capable to measure the produced methane concentration with high precision and with hightemporal resolution is needed. Although there are several methods to detect methane, only a few fulfill all the needed requirements to work within simulated extraterrestrial environments. We have chosen laser spectroscopy, which is a non-destructive technique that measures the methane concentration without sample taking and also can be run continuously. Inoursimulation, we detected methane production at temperatures down to �-5°C, which would be found on Mars either temporarily in the shallow subsurface or continually in the deep subsurface. The pressure of 50kPa which we used in our experiments, corresponds to the expected pressure in the Martian near subsurface. Our new device proved to be fully functional and the results indicate that the possible existence of methanogenic archaea in Martian subsurface habitats can not be ruled out. Other Non-Article Part of Journal/Newspaper permafrost Siberia German Aerospace Center: elib - DLR electronic library Planetary and Space Science 98 198 204 |
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Open Polar |
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German Aerospace Center: elib - DLR electronic library |
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English |
topic |
Experimentelle Planetenphysik |
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Experimentelle Planetenphysik Schirmack, J. Böhm, M. Brauer, C. Löhmannsröben, H.G. de Vera, Jean Pierre Paul Möhlmann, D. Wagner, D. Laser spectroscopic real time measurements of methanogenic activity under simulated Martian subsurface analog conditions |
topic_facet |
Experimentelle Planetenphysik |
description |
On Earth, chemolithoautothrophic and anaerobic microorganisms such as methanogenic archaea are regarded as model organisms for possible subsurface life on Mars. For this reason, the methanogenic strain Methanosarcina soligelidi (formerly called Methanosarcina spec. SMA-21), isolated from permafrost-affected soil in northeast Siberia, has been tested under Martian thermo-physicalconditions. In previous studies under simulated Martian conditions, high survival rates of these microorganisms were observed. In our study we present a method to measure methane production as a first attempt to study metabolic activity of methanogenic archaea during simulated conditions approaching conditions of Mars-like environments.To determine methanogenic activity, a measurement technique which is capable to measure the produced methane concentration with high precision and with hightemporal resolution is needed. Although there are several methods to detect methane, only a few fulfill all the needed requirements to work within simulated extraterrestrial environments. We have chosen laser spectroscopy, which is a non-destructive technique that measures the methane concentration without sample taking and also can be run continuously. Inoursimulation, we detected methane production at temperatures down to �-5°C, which would be found on Mars either temporarily in the shallow subsurface or continually in the deep subsurface. The pressure of 50kPa which we used in our experiments, corresponds to the expected pressure in the Martian near subsurface. Our new device proved to be fully functional and the results indicate that the possible existence of methanogenic archaea in Martian subsurface habitats can not be ruled out. |
format |
Other Non-Article Part of Journal/Newspaper |
author |
Schirmack, J. Böhm, M. Brauer, C. Löhmannsröben, H.G. de Vera, Jean Pierre Paul Möhlmann, D. Wagner, D. |
author_facet |
Schirmack, J. Böhm, M. Brauer, C. Löhmannsröben, H.G. de Vera, Jean Pierre Paul Möhlmann, D. Wagner, D. |
author_sort |
Schirmack, J. |
title |
Laser spectroscopic real time measurements of methanogenic activity under simulated Martian subsurface analog conditions |
title_short |
Laser spectroscopic real time measurements of methanogenic activity under simulated Martian subsurface analog conditions |
title_full |
Laser spectroscopic real time measurements of methanogenic activity under simulated Martian subsurface analog conditions |
title_fullStr |
Laser spectroscopic real time measurements of methanogenic activity under simulated Martian subsurface analog conditions |
title_full_unstemmed |
Laser spectroscopic real time measurements of methanogenic activity under simulated Martian subsurface analog conditions |
title_sort |
laser spectroscopic real time measurements of methanogenic activity under simulated martian subsurface analog conditions |
publisher |
Elsevier |
publishDate |
2014 |
url |
https://elib.dlr.de/94140/ https://elib.dlr.de/94140/1/1-s2.0-S0032063313002249-main.pdf |
genre |
permafrost Siberia |
genre_facet |
permafrost Siberia |
op_relation |
https://elib.dlr.de/94140/1/1-s2.0-S0032063313002249-main.pdf Schirmack, J. und Böhm, M. und Brauer, C. und Löhmannsröben, H.G. und de Vera, Jean Pierre Paul und Möhlmann, D. und Wagner, D. (2014) Laser spectroscopic real time measurements of methanogenic activity under simulated Martian subsurface analog conditions. Planetary and Space Science, 98, Seiten 198-204. Elsevier. DOI:10.1016/j.pss.2013.08.019 <https://doi.org/10.1016/j.pss.2013.08.019> ISSN 0032-0633 |
op_doi |
https://doi.org/10.1016/j.pss.2013.08.019 |
container_title |
Planetary and Space Science |
container_volume |
98 |
container_start_page |
198 |
op_container_end_page |
204 |
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1766166533222957056 |