Pacelli, C. und Selbmann, L. und Onofri, S. und de Vera, Jean Pierre Paul (2014) BIOMEX (Biology and Mars Experiment): Preliminary results on Antarctic black cryptoendolithic fungi in ground based experiments. EANA 2014, 2014-10-13 - 2014-10-16, Edinburgh, UK.
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Offizielle URL: http://www.astrobiology.ac.uk/files/2013/03/Abstract-Book-EANA.pdf
Kurzfassung
The main goal for astrobiologists is to find traces of present or past life in extraterrestrial environment or in meteorites. Biomolecules, such as lipids, pigments or polysaccharides, may be useful to establish the presence of extant or extinct life (Simoneit, B et al., 1998). BIOMEX (Biology and Mars Experiment) aims to measure to what extent biomolecules, such as pigments and cellular components, preserve their stability under space and Mars-like conditions. The experiment has just been launched in the space and will be exposed on EXPOSE-R payload to the outside of the International Space Station (ISS) for about 2 years. Among a number of extremophilic microorganisms tested, the Antarctic cryptoendolithic black fungus Cryomyces antarcticus CCFEE 515 was included in the experiment. The fungus, living in the airspaces of porous rocks, was already chosen in previous astrobiological investigation for studying the interplanetary transfer of life via meteorites. In that context, the fungus survived 18 months of exposure outside of the ISS (Onofri al., 2012); for all these reasons it is considered an optimal eukaryotic model for astrobiological exploration. Before launch dried samples were exposed, in ground based experiments, to extreme conditions, including vacuum, irradiation and temperature cycles.Upon sample re-hydration and survival analysis, including colony forming ability, Propidium MonoAzide (PMA) assay-coupled quantitative PCR (Mohapatra and La Duc, 2012) all the test systems survived, neither any DNA damage was detectable. Our analyses focused also on mineral-microorganisms interactions and stability/degradation of typical fungal macromolecules, in particular melanin, when exposed to space and simulated Martian conditions, contributing to the development of libraries of biosignatures in rocks, supporting future exploration missions.
elib-URL des Eintrags: | https://elib.dlr.de/94152/ | ||||||||||||||||||||
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Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||||||||||
Titel: | BIOMEX (Biology and Mars Experiment): Preliminary results on Antarctic black cryptoendolithic fungi in ground based experiments | ||||||||||||||||||||
Autoren: |
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Datum: | 13 Oktober 2014 | ||||||||||||||||||||
Referierte Publikation: | Nein | ||||||||||||||||||||
Open Access: | Ja | ||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||
In SCOPUS: | Nein | ||||||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||
Stichwörter: | BIOMEX; antarctic black fungi; space experiment; simulation; Mars | ||||||||||||||||||||
Veranstaltungstitel: | EANA 2014 | ||||||||||||||||||||
Veranstaltungsort: | Edinburgh, UK | ||||||||||||||||||||
Veranstaltungsart: | internationale Konferenz | ||||||||||||||||||||
Veranstaltungsbeginn: | 13 Oktober 2014 | ||||||||||||||||||||
Veranstaltungsende: | 16 Oktober 2014 | ||||||||||||||||||||
Veranstalter : | UK Centre of Astrobiology | ||||||||||||||||||||
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: | 06 Jan 2015 14:54 | ||||||||||||||||||||
Letzte Änderung: | 24 Apr 2024 20:00 |
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