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NEW MODELORGANISMS FOR ASTROBIOLOGY FROM MARS ANALOG ENVIRONMENTS

Beblo-Vranesevic, K. und Rettberg, P. (2022) NEW MODELORGANISMS FOR ASTROBIOLOGY FROM MARS ANALOG ENVIRONMENTS. Extremophiles 2022, 2022-09-18 - 2022-09-22, Loutraki, GREECE.

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Kurzfassung

A selection of the core questions in astrobiology deal with the origin of life on Earth, life in extreme environments on Earth, and the search for past and present life on other celestial bodies. We are therefore searching for new model-organisms for astrobiology in extreme environments, the so-called Martian analog environments, which are similar to past and present-day Mars in some characteristics and properties (anoxic conditions, low nutrient availability, high salinity, low temperatures, etc.). At the moment we are working with three facultative anaerobic model-organisms, namely Yersinia intermedia MASE-LG-1, Buttiauxella sp. MASE-IM-9, and Salinisphaera shabanensis. These organisms are being evaluated for their tolerance to Mars relevant stress factors such as desiccation, Martian atmosphere, radiation (polychromatic / monochromatic UV; ionizing radiation), oxidizing compounds (perchlorates), and the presence of an analog Martian regolith. All these influencing factors were tested under anoxic conditions as single stresses and in combination [1, 2]. The results showed that the new model-organisms for the most part clearly survived the various stress factors, thus qualifying them as possible candidates for our future space experiment called MEXEM (Mars EXposed Extremophiles Mixture). MEXEM which will be an exposure experiment which is installed on the outside of the international space station.

elib-URL des Eintrags:https://elib.dlr.de/189207/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:NEW MODELORGANISMS FOR ASTROBIOLOGY FROM MARS ANALOG ENVIRONMENTS
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Beblo-Vranesevic, K.Radiation Biology Department, Institute of Aerospace Medicine, German Aerospace Center (DLR), Cologne, Germany; kristina.beblo (at) dlr.dehttps://orcid.org/0000-0002-4834-7121NICHT SPEZIFIZIERT
Rettberg, P.Radiation Biology Department, Institute of Aerospace Medicine, German Aerospace Center (DLR), Cologne, Germany; petra.rettberg (at) dlr.dehttps://orcid.org/0000-0003-4439-2395NICHT SPEZIFIZIERT
Datum:September 2022
Referierte Publikation:Ja
Open Access:Ja
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:Astrobiology, extreme environments, new model-organisms, Martian analog environments, Earth, Mars
Veranstaltungstitel:Extremophiles 2022
Veranstaltungsort:Loutraki, GREECE
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:18 September 2022
Veranstaltungsende:22 September 2022
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Forschung unter Weltraumbedingungen
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R FR - Forschung unter Weltraumbedingungen
DLR - Teilgebiet (Projekt, Vorhaben):R - Projekt ISS LIFE 2.0
Standort: Köln-Porz
Institute & Einrichtungen:Institut für Luft- und Raumfahrtmedizin > Strahlenbiologie
Hinterlegt von: Kopp, Kerstin
Hinterlegt am:10 Nov 2022 12:01
Letzte Änderung:24 Apr 2024 20:50

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