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ICEXPOSE:ICY EXPOSURE OF MICROORGANISMS

Panitz, C. und Moeller, R. und Beblo-Vranesevic, K. und Cortesao, M. und Rettberg, P. und Rabbow, E. (2019) ICEXPOSE:ICY EXPOSURE OF MICROORGANISMS. In: 70th International Astronautical Congress 2019. 70th International Astronautical Congress 2019, 2019-10-21 - 2019-10-25, Washington D.C., United States.

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Kurzfassung

The cold, arid, remotely located and perennially ice covered environment of the Antarctic ice sheet is the most hostile place on Earth. It has long been considered an analogue to how life might persist in the frozen landscape of the major Astrobiological targets of our solar system such as Mars or the Jupiter’s ice-covered moon Europa. In the frame of the ICExPOSE project presented here, the parameters outside the Antarctic Concordia station are utilized as a testbed for performed or planned long-duration space flights and to study the survivability of selected test organisms in an extremely cold (with temperature swings) and highly variable UV environment. The most likely terrestrial organisms to endure such an excursion are extremely tolerant and/or (multi-) resistant microbes-extremophiles- that have evolved mechanisms to withstand such severe conditions. The survivability of a variety of human-, space-flight and extreme-associated microorganisms from all three domains of life (plus viruses) will be investigated using a multiuser exposure facility called EXPOSE that has already been successfully flown on ISS for space exposure durations of up to 2 years. The EXPOSE Mission Ground Reference (MGR) trays are still available and will be reused to accommodate the samples for passive exposure. Microbiological response to single and combined extraterrestrial conditions including simulations of astrobiological relevant environments, like simulated Martian atmospheric conditions, will be tested. The scientific questions addressed in ICEXPOSE are: how is the survival of human-associated and Polar Regions- derived microorganisms compared to (other) environmental extremophilic microorganisms; which physiological state (i.e., cells, spores or colony/biofilms) harbors the weakest or strongest viability and/or mutagenicity detectable after exposure; what type of morphologic and molecular changes can be identified and to which extent does the exposure conditions (e.g. UV-exposed versus UV-shielded) influence the microbial physiology (e.g. pathogenicity, antibiotic resistance, and metabolism) of the exposed species. The results of the ICExPOSE experiment will provide valuable information on: the definition of the physical-chemical limits of life as well as the potential habitability of other planetary bodies; the assessment of the risk of microbial contamination inside human inhabited confined areas and consequent challenges for human health; how to better monitor and control microbial contamination in spaceflight environments, as a key-factor for the success of future space exploration missions; whether specific microorganisms pose possible forward contamination risks that could impact planetary protection policy and will provide complementary results for the two selected future ESA space experiments MEXEM and IceCold.

elib-URL des Eintrags:https://elib.dlr.de/129884/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:ICEXPOSE:ICY EXPOSURE OF MICROORGANISMS
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Panitz, C.RWTH Aachen University, Germany; cpanitz (at) ukaachen.dehttps://orcid.org/0000-0002-6740-761XNICHT SPEZIFIZIERT
Moeller, R.Radiation Biology Department, Institute of Aerospace Medicine, German Aerospace Center (dlr), Cologne, Germany; ralf.moeller (at) dlr.dehttps://orcid.org/0000-0002-2371-0676NICHT SPEZIFIZIERT
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
Cortesao, M.Radiation Biology Department, Institute of Aerospace Medicine, German Aerospace Center (DLR), Cologne, Germany; Marta.Cortesao (at) dlr.dehttps://orcid.org/0000-0001-6603-1211NICHT 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
Rabbow, E.Radiation Biology Department, Institute of Aerospace Medicine, German Aerospace Center (DLR), Cologne, Germany; elke.rabbow (at) dlr.dehttps://orcid.org/0000-0002-9301-2021NICHT SPEZIFIZIERT
Datum:21 Oktober 2019
Erschienen in:70th International Astronautical Congress 2019
Referierte Publikation:Ja
Open Access:Ja
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:ICExPOSE Project
Veranstaltungstitel:70th International Astronautical Congress 2019
Veranstaltungsort:Washington D.C., United States
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:21 Oktober 2019
Veranstaltungsende:25 Oktober 2019
Veranstalter :International Astronautical Federation (IAF)
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 - Vorhaben Strahlenbiologie (alt)
Standort: Köln-Porz
Institute & Einrichtungen:Institut für Luft- und Raumfahrtmedizin > Strahlenbiologie
Hinterlegt von: Kopp, Kerstin
Hinterlegt am:30 Okt 2019 15:02
Letzte Änderung:24 Apr 2024 20:33

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