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MICROORGANISMS FROM MARS ANALOGUE ENVIRONMENTS IN EARTH - COULD THEY SURVIVE ON MARS?

Rettberg, Petra and Cockell, C.S. and Beblo-Vranesevic, K. and Bohmeier, M. and Rabbow, E. and Schwendner, P. and Westall, F. and Gaboyer, F. and Walter, N. and Moissl-Eichinger, C. and Perras, A. and Gomez, F. and Amils, R. and Garcia, L. and Ehrenfreund, P. and Monaghan, E. and Marteinsson, V. and Vannier, P. and Rettberg, P. (2016) MICROORGANISMS FROM MARS ANALOGUE ENVIRONMENTS IN EARTH - COULD THEY SURVIVE ON MARS? 41st Scientific Assembly of the Committee on Space Research (COSPAR), 30. Juli - 7. August 2016, Istanbul, Turkey.

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Abstract

Assessing the habitability of Mars and detecting life, if it was ever there, depends on knowledge of whether the combined environmental stresses experienced on Mars are compatible with life and whether a record of that life could ever be detected. Many combinations of Mars relevant stress factors, such as high radiation dose rates and high UV uences combined with high salt concentrations, and low water activity, have not been investigated. In particular, the response of anaerobic organisms to Mars-like stress factors and combinations thereof are not known. In the EC project MASE (Mars Analogues for Space Exploration) we address these limitations by characterising different Mars analogue environments on Earth, isolating microorganisms from these sites and exposing them to Mars relevant stress factors alone and in combination. We want to find out, if these bacteria respond in an additive or synergistic way and if they would be able to survive on Mars. So far, eight only distantly related microorganisms are under detailed investigation, e.g Yersinia sp., Halanaerobium sp., Acidiphilum sp. Desulfovibrio sp.. Unexpectedly, a Yersinia strain turned out to be quite resistant, especially against desicca- tion and oxidising compounds, whereas a Desulfovibrio sp. strain exhibit a relatively high radiation resistance. The future experiments aim at the identification of the underlying cellu- lar and molecular mechanisms and the comparison to other new isolates from Mars analogue environments on Earth in the MASE project.

Item URL in elib:https://elib.dlr.de/105929/
Document Type:Conference or Workshop Item (Speech)
Title:MICROORGANISMS FROM MARS ANALOGUE ENVIRONMENTS IN EARTH - COULD THEY SURVIVE ON MARS?
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Rettberg, PetraRadiation Biology Department, Institute of Aerospace Medicine, German Aerospace Center (DLR), Cologne, Germany; petra.rettberg (at) dlr.dehttps://orcid.org/0000-0003-4439-2395
Cockell, C.S.(Coordinator, UK)UNSPECIFIED
Beblo-Vranesevic, K.(D)UNSPECIFIED
Bohmeier, M.(D)UNSPECIFIED
Rabbow, E.(D)UNSPECIFIED
Schwendner, P.(UK)UNSPECIFIED
Westall, F.(F)UNSPECIFIED
Gaboyer, F.(F)UNSPECIFIED
Walter, N.(F)UNSPECIFIED
Moissl-Eichinger, C.(A)UNSPECIFIED
Perras, A.(A)UNSPECIFIED
Gomez, F.(ES)UNSPECIFIED
Amils, R.(ES)UNSPECIFIED
Garcia, L.(ES)UNSPECIFIED
Ehrenfreund, P.(NL)UNSPECIFIED
Monaghan, E.(NL)UNSPECIFIED
Marteinsson, V.(IS)UNSPECIFIED
Vannier, P.(IS)UNSPECIFIED
Rettberg, P.(D)UNSPECIFIED
Date:2016
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Astrobiology, MASE, Mars
Event Title:41st Scientific Assembly of the Committee on Space Research (COSPAR)
Event Location:Istanbul, Turkey
Event Type:international Conference
Event Dates:30. Juli - 7. August 2016
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Research under Space Conditions
DLR - Research area:Raumfahrt
DLR - Program:R FR - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):R - Vorhaben Strahlenbiologie
Location: Köln-Porz
Institutes and Institutions:Institute of Aerospace Medicine > Radiation Biology
Deposited By: Kopp, Kerstin
Deposited On:23 Sep 2016 08:03
Last Modified:31 Jul 2019 20:03

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