Adaptation of an Antarctic lichen to Martian niche conditions can occur within 34 days
Stresses occurring on the Martian surface were simulated in a Mars Simulation Chamber (MSC) and included high UV fluxes (Zarnecki andCatling,2002), low temperatures, low water activity, high atmospheric CO2 concentrations, and an atmospheric pressure of about 800Pa (Kasting, 1991; Head etal., 2003)....
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ftdlr:oai:elib.dlr.de:97969 2023-12-31T10:00:41+01:00 Adaptation of an Antarctic lichen to Martian niche conditions can occur within 34 days de Vera, Jean Pierre Paul Schulze-Makuch, D. Khan, A. Lorek, Andreas Möhlmann, D. Spohn, Tilman 2014 application/pdf https://elib.dlr.de/97969/ https://elib.dlr.de/97969/1/Vera%20et%20al%202014.pdf de ger Elsevier https://elib.dlr.de/97969/1/Vera%20et%20al%202014.pdf de Vera, Jean Pierre Paul und Schulze-Makuch, D. und Khan, A. und Lorek, Andreas und Möhlmann, D. und Spohn, Tilman (2014) Adaptation of an Antarctic lichen to Martian niche conditions can occur within 34 days. Planetary and Space Science, 98, Seiten 182-190. Elsevier. doi:10.1016/j.pss.2013.07.014 <https://doi.org/10.1016/j.pss.2013.07.014>. ISSN 0032-0633. Institut für Planetenforschung Zeitschriftenbeitrag PeerReviewed 2014 ftdlr https://doi.org/10.1016/j.pss.2013.07.014 2023-12-04T00:24:05Z Stresses occurring on the Martian surface were simulated in a Mars Simulation Chamber (MSC) and included high UV fluxes (Zarnecki andCatling,2002), low temperatures, low water activity, high atmospheric CO2 concentrations, and an atmospheric pressure of about 800Pa (Kasting, 1991; Head etal., 2003). The lichen Pleopsidium chlorophanum is an extremophile that lives in very cold, dry, high-altitude habitats, which are Earth's best approximation of the Martian surface. Samples with P.chlorophanum were exposed uninterruptedly to simulated conditions of the unprotected Martian surface (i.e. 6344kJ/m^2) and protected niche conditions (269kJ/m^2) for 34 days. Under unprotected Martian surface conditions the fungal symbiont decreases its metabolic activity and it was unclear if the algal symbiont of the lichen was still actively photosynthesizing. However,under “protected site” conditions, the entire lichen not only survived and remained photosynthetically active, it even adapted physiologically by increasing its photosynthetic activity over 34 days. Article in Journal/Newspaper Antarc* Antarctic German Aerospace Center: elib - DLR electronic library Planetary and Space Science 98 182 190 |
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German Aerospace Center: elib - DLR electronic library |
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German |
topic |
Institut für Planetenforschung |
spellingShingle |
Institut für Planetenforschung de Vera, Jean Pierre Paul Schulze-Makuch, D. Khan, A. Lorek, Andreas Möhlmann, D. Spohn, Tilman Adaptation of an Antarctic lichen to Martian niche conditions can occur within 34 days |
topic_facet |
Institut für Planetenforschung |
description |
Stresses occurring on the Martian surface were simulated in a Mars Simulation Chamber (MSC) and included high UV fluxes (Zarnecki andCatling,2002), low temperatures, low water activity, high atmospheric CO2 concentrations, and an atmospheric pressure of about 800Pa (Kasting, 1991; Head etal., 2003). The lichen Pleopsidium chlorophanum is an extremophile that lives in very cold, dry, high-altitude habitats, which are Earth's best approximation of the Martian surface. Samples with P.chlorophanum were exposed uninterruptedly to simulated conditions of the unprotected Martian surface (i.e. 6344kJ/m^2) and protected niche conditions (269kJ/m^2) for 34 days. Under unprotected Martian surface conditions the fungal symbiont decreases its metabolic activity and it was unclear if the algal symbiont of the lichen was still actively photosynthesizing. However,under “protected site” conditions, the entire lichen not only survived and remained photosynthetically active, it even adapted physiologically by increasing its photosynthetic activity over 34 days. |
format |
Article in Journal/Newspaper |
author |
de Vera, Jean Pierre Paul Schulze-Makuch, D. Khan, A. Lorek, Andreas Möhlmann, D. Spohn, Tilman |
author_facet |
de Vera, Jean Pierre Paul Schulze-Makuch, D. Khan, A. Lorek, Andreas Möhlmann, D. Spohn, Tilman |
author_sort |
de Vera, Jean Pierre Paul |
title |
Adaptation of an Antarctic lichen to Martian niche conditions can occur within 34 days |
title_short |
Adaptation of an Antarctic lichen to Martian niche conditions can occur within 34 days |
title_full |
Adaptation of an Antarctic lichen to Martian niche conditions can occur within 34 days |
title_fullStr |
Adaptation of an Antarctic lichen to Martian niche conditions can occur within 34 days |
title_full_unstemmed |
Adaptation of an Antarctic lichen to Martian niche conditions can occur within 34 days |
title_sort |
adaptation of an antarctic lichen to martian niche conditions can occur within 34 days |
publisher |
Elsevier |
publishDate |
2014 |
url |
https://elib.dlr.de/97969/ https://elib.dlr.de/97969/1/Vera%20et%20al%202014.pdf |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
https://elib.dlr.de/97969/1/Vera%20et%20al%202014.pdf de Vera, Jean Pierre Paul und Schulze-Makuch, D. und Khan, A. und Lorek, Andreas und Möhlmann, D. und Spohn, Tilman (2014) Adaptation of an Antarctic lichen to Martian niche conditions can occur within 34 days. Planetary and Space Science, 98, Seiten 182-190. Elsevier. doi:10.1016/j.pss.2013.07.014 <https://doi.org/10.1016/j.pss.2013.07.014>. ISSN 0032-0633. |
op_doi |
https://doi.org/10.1016/j.pss.2013.07.014 |
container_title |
Planetary and Space Science |
container_volume |
98 |
container_start_page |
182 |
op_container_end_page |
190 |
_version_ |
1786789862032015360 |