de Vera, Jean Pierre Paul und Dulai, S. und Kereszturi, A. und Koncz, Alexander und Lorek, Andreas und Möhlmann, D. und Marschall, M. und Pocs, T. (2014) Results on the survival of cryptobiotic cyanobacteria samples after exposure to Mars-like environmental conditions. International Journal of Astrobiology, 13 (1), Seiten 35-44. Cambridge University Press. doi: 10.1017/S1473550413000323. ISSN 1473-5504.
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Offizielle URL: http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=9130902
Kurzfassung
Tests on cyanobacteria communities embedded in cryptobiotic crusts collected in hot and cold deserts on Earth were performed under Mars-like conditions. The simulations were realized as a survey, to find the best samples for future research. During the tests organisms have to resist Mars-like conditions such as atmospheric composition, pressure, variable humidity (saturated and dry conditions) and partly strong UV irradiation. Organisms were tested within their original habitat inside the crust. Nearly half of the cryptobiotic samples from various sites showed survival of a substantial part of their coexisting organisms. The survival in general depended more on the nature of the original habitat and type of the sample than on the different conditions they were exposed to. The best survival was observed in samples from United Arab Emirates (Jebel Ali, 25 km SW of Dubai town) and from Western Australia (near the South edge of Lake Barley), by taxa: Tolypothrix byssoidea, Gloeocapsopsis pleurocapsoides, Nostoc microscopicum, Leptolyngbya or Symploca sp. At both places in salty desert areas members of the Chenopodiaceae family dominated among the higher plants and in the cryptobiotic crust cyanobacterial taxa Tolypothrix was dominant. These organisms were all living in salty locations with dry conditions most of the year. Among them Tolypothrix, Gloeocapsopsis and Symploca sp. were tested in Mars simulation chambers for the first time. The results suggest that extremophiles should be tested with taken into account the context of their original microenvironment, and also the importance to analyse communities of microbes beside single organisms.
elib-URL des Eintrags: | https://elib.dlr.de/87773/ | ||||||||||||||||||||||||||||||||||||
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Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||||||||||||||||||||||
Titel: | Results on the survival of cryptobiotic cyanobacteria samples after exposure to Mars-like environmental conditions | ||||||||||||||||||||||||||||||||||||
Autoren: |
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Datum: | 1 Januar 2014 | ||||||||||||||||||||||||||||||||||||
Erschienen in: | International Journal of Astrobiology | ||||||||||||||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||||||||||||||||||
In ISI Web of Science: | Ja | ||||||||||||||||||||||||||||||||||||
Band: | 13 | ||||||||||||||||||||||||||||||||||||
DOI: | 10.1017/S1473550413000323 | ||||||||||||||||||||||||||||||||||||
Seitenbereich: | Seiten 35-44 | ||||||||||||||||||||||||||||||||||||
Verlag: | Cambridge University Press | ||||||||||||||||||||||||||||||||||||
ISSN: | 1473-5504 | ||||||||||||||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||||||||||||||
Stichwörter: | extremophiles; cyanobacteria; cryptobiotic crust; Mars; simulation | ||||||||||||||||||||||||||||||||||||
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 - Exploration des Sonnensystems | ||||||||||||||||||||||||||||||||||||
Standort: | Berlin-Adlershof | ||||||||||||||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Planetenforschung > Experimentelle Planetenphysik | ||||||||||||||||||||||||||||||||||||
Hinterlegt von: | de Vera, Dr. Jean Pierre Paul | ||||||||||||||||||||||||||||||||||||
Hinterlegt am: | 23 Jan 2014 15:52 | ||||||||||||||||||||||||||||||||||||
Letzte Änderung: | 29 Nov 2023 12:50 |
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