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Survival of rock-colonizing organisms after 1.5 years in outer space

Onofri, S. und de la Torre Noetzel, R. und de Vera, J.P. und Ott, S. und Zucconi, L. und Selbmann, L. und Scalzi, Giuliano und Venkateswaran, Kasthuri J. und Rabbow, E. und Sánchez Iñigo, F.J. und Horneck, G. (2012) Survival of rock-colonizing organisms after 1.5 years in outer space. Astrobiology, Seiten 508-516. Mary Ann Liebert New Rochelle New York. DOI: 10.1089/ast2011.0736.

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Kurzfassung

Cryptoendolithic microbial communities and epilithic lichens have been considered as appropriate candidates for the scenario of lithopanspermia, which proposes a natural interplanetary exchange of organisms by means of rocks that have been impact ejected from their planet of origin. So far, the hardiness of these terrestrial organisms in the severe and hostile conditions of space has not been tested over extended periods of time. A first long-term (1.5 years) exposure experiment in space was performed with a variety of rock-colonizing eukaryotic organisms at the International Space Station on board the European EXPOSE-E facility. Organisms were selected that are especially adapted to cope with the environmental extremes of their natural habitats. It was found that some—but not all—of those most robust microbial communities from extremely hostile regions on Earth are also partially resistant to the even more hostile environment of outer space, including high vacuum, temperature fluctuation, the full spectrum of extraterrestrial solar electromagnetic radiation, and cosmic ionizing radiation. Although the reported experimental period of 1.5 years in space is not comparable with the time spans of thousands or millions of years believed to be required for lithopanspermia, our data provide first evidence of the differential hardiness of cryptoendolithic communities in space.

Dokumentart:Zeitschriftenbeitrag
Titel:Survival of rock-colonizing organisms after 1.5 years in outer space
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Onofri, S.DECOS, Università degli Studi della Tuscia, Largo dell’Università, Viterbo, Italy;
de la Torre Noetzel, R.Department of Earth Observation, Area of Atmospheric Research and Instrumentation, INTA, 28850 Torrejón de Ardoz, Madrid, Spain
de Vera, J.P.jean-pierre.devera@dlr.de
Ott, S.Institute of Botany, Heinrich-Heine-University, Universitätsstr.1, 40225 Düsseldorf, Germany
Zucconi, L.DECOS, Università degli Studi della Tuscia, Largo dell’Università, Viterbo, Italy;
Selbmann, L.DECOS, Università degli Studi della Tuscia, Largo dell’Università, Viterbo, Italy;
Scalzi, Giuliano Department of Ecological and Biological Sciences, University of Tuscia, Viterbo, Italy and Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA
Venkateswaran, Kasthuri J. Jet Propulsion Laboratory, Pasadena, California, USA.
Rabbow, E.Elke.Rabbow@dlr.de
Sánchez Iñigo, F.J. Department of Earth Observation, Spanish Aerospace Research Establishment-INTA, Torrejón de Ardoz, Madrid, Spain.
Horneck, G. Institute of Aerospace Medicine, DLR, Köln, Germany.
Datum:Mai 2012
Erschienen in:Astrobiology
Referierte Publikation:Ja
In SCOPUS:Ja
In ISI Web of Science:Ja
DOI :10.1089/ast2011.0736
Seitenbereich:Seiten 508-516
Verlag:Mary Ann Liebert New Rochelle New York
Status:veröffentlicht
Stichwörter:Astrobiology, Lithopanspermia, Radiation resistance, Survival, Vacuum
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Erforschung des Weltraums
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R EW - Erforschung des Weltraums
DLR - Teilgebiet (Projekt, Vorhaben):R - Vorhaben Exploration des Sonnensystems
Standort: Köln-Porz , Berlin-Adlershof
Institute & Einrichtungen:Institut für Planetenforschung
Institut für Luft- und Raumfahrtmedizin
Institut für Planetenforschung > Experimentelle Planetenphysik
Institut für Luft- und Raumfahrtmedizin > Strahlenbiologie
Hinterlegt von: Dr. Jean Pierre Paul de Vera
Hinterlegt am:11 Dez 2012 14:59
Letzte Änderung:26 Mär 2013 13:44

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