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LIFE Experiment: Isolation of Cryptoendolithic Organisms from Antarctic Colonized Sandstone Exposed to Space and Simulated Mars Conditions on the International Space Station

Scalzi, Giuliano and Selbmann, Laura and Zucconi, Laura and Rabbow, Elke and Horneck, Gerda and Albertano, Patrizia and Onofri, Silvano (2012) LIFE Experiment: Isolation of Cryptoendolithic Organisms from Antarctic Colonized Sandstone Exposed to Space and Simulated Mars Conditions on the International Space Station. Origins of Life and Evolution of Biospheres, 42 (2-3), pp. 253-262. Springer Verlag. doi: 10.1007/s11084-012-9282-5. ISSN 0169-6149.

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Abstract

Desiccated Antarctic rocks colonized by cryptoendolithic communities were exposed on the International Space Station (ISS) to space and simulated Mars conditions (LiFE—Lichens and Fungi Experiment). After 1.5 years in space samples were retrieved, rehydrated and spread on different culture media. Colonies of a green alga and a pink-coloured fungus developed on Malt-Agar medium; they were isolated from a sample exposed to simulated Mars conditions beneath a 0.1 %T Suprasil neutral density filter and from a sample exposed to space vacuum without solar radiation exposure, respectively. None of the other flight samples showed any growth after incubation. The two organisms able to grow were identified at genus level by Small SubUnit (SSU) and Internal Transcribed Spacer (ITS) rDNA sequencing as Stichococcus sp. (green alga) and Acarospora sp. (lichenized fungal genus) respectively. The data in the present study provide experimental information on the possibility of eukaryotic life transfer from one planet to another by means of rocks and of survival in Mars environment.

Item URL in elib:https://elib.dlr.de/76327/
Document Type:Article
Title:LIFE Experiment: Isolation of Cryptoendolithic Organisms from Antarctic Colonized Sandstone Exposed to Space and Simulated Mars Conditions on the International Space Station
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Scalzi, Giuliano Department of Ecological and Biological Sciences (DEB), University of Tuscia, Largo dell’Università snc, 01100 Viterbo, ItalyUNSPECIFIED
Selbmann, Laura Department of Ecological and Biological Sciences (DEB), University of Tuscia, Largo dell’Università snc, 01100 Viterbo, ItalyUNSPECIFIED
Zucconi, Laura Department of Ecological and Biological Sciences (DEB), University of Tuscia, Largo dell’Università snc, 01100 Viterbo, ItalyUNSPECIFIED
Rabbow, Elke German Aerospace Center, Institute of Aerospace Medicine, Linder Hoehe, 51170 Köln, GermanyUNSPECIFIED
Horneck, Gerda German Aerospace Center, Institute of Aerospace Medicine, Linder Hoehe, 51170 Köln, GermanyUNSPECIFIED
Albertano, Patrizia Department of Biology, University of Rome “Tor Vergata”, via della Ricerca Scientifica snc, 00133 Rome, ItalyUNSPECIFIED
Onofri, Silvano Department of Ecological and Biological Sciences (DEB), University of Tuscia, Largo dell’Università snc, 01100 Viterbo, ItalyUNSPECIFIED
Date:2012
Journal or Publication Title:Origins of Life and Evolution of Biospheres
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:Yes
Volume:42
DOI :10.1007/s11084-012-9282-5
Page Range:pp. 253-262
Publisher:Springer Verlag
ISSN:0169-6149
Status:Published
Keywords:Antarctic colonized rocks, EXPOSE-E, International space station, Lithopanspermia, Lichens and Fungi Experiment
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 - Research under Space Conditions
DLR - Research theme (Project):R - Vorhaben Strahlenbiologie (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Aerospace Medicine > Radiation Biology
Deposited By: Kopp, Kerstin
Deposited On:10 Aug 2012 09:38
Last Modified:07 Feb 2013 19:31

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