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Survival of the NASA Mars Odyssey isolate Acinetobacter radioresistens 50v1 on different spaceflight relevant antimicrobial surfaces

Hoef-Emden, M. und Moeller, R. (2017) Survival of the NASA Mars Odyssey isolate Acinetobacter radioresistens 50v1 on different spaceflight relevant antimicrobial surfaces. In: BIOspektrum - Das Magazin für Biowissenschaften - Abstractbook - Sonderausgabe (D13808), Seite 140. Springer. MICROBIOLOGY AND INFECTION 2017, 5th Joint Conference of the DGHM & VAAM, VAAM Annual Meeting 2017, 69th Annual Meeting of the DGHM, 05-08-March 2017, Würzburg, Germany. ISSN 0947-0867.

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Kurzfassung

Since many years, human mankind travels to space. One of our mayor interests is the health of astronauts and the protection of the spacecraft. Apart from external influences, the microbial burden inside of the International Space Station (ISS) may be dangerous and must be limited to a minimum. To ensure the status and the protection of the crew as well as the spacecraft itself, it is necessary to determine the survival of microorganisms on different surfaces. Microorganisms are constantly changing their strategy of survival, primarily induced by extreme environmental conditions, such as space conditions, compared to their terrestrial habitats. However, the increased levels in resistance and robustness possibly play a sensitive role in evolving new virulence factors in the space environment. One of the bacteria on the NASA Mars Odyssey spacecraft, which have been isolated, is the Gram-negative, non-motile bacterium Acinetobacter radioresistens. Apart from Deinococcus radiodurans, A. radioresistens shows similar levels in radiation and oxidative stress tolerance (McCoy et al., 2012). In our work, we used the strain 50v1, isolated from the surface of the Mars Odyssey spacecraft as well as the type strain DSM6976, which was isolated on Earth from cotton and soil samples. We investigated the resistance regarding in their desiccation tolerance on metallic surfaces including materials with different antimicrobial properties. For those experiments we exposed and desiccated both strains on the different surfaces (such as copperand silver-containing materials) and determined the survival over different time points. First results show a high resistance of the spacecraft isolated strain compared to the type strain. These results give implications about the higher survivability of environmental microorganisms and highlight the essence of bioburden reduction and improve sterilization approaches/techniques for upcoming space exploration missions towards the search for life outside Earth.

elib-URL des Eintrags:https://elib.dlr.de/118060/
Dokumentart:Konferenzbeitrag (Poster)
Titel:Survival of the NASA Mars Odyssey isolate Acinetobacter radioresistens 50v1 on different spaceflight relevant antimicrobial surfaces
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Hoef-Emden, M.Radiation Biology Department, Institute of Aerospace Medicine, German Aerospace Center (dlr), Cologne, GermanyNICHT SPEZIFIZIERTNICHT 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
Datum:2017
Erschienen in:BIOspektrum - Das Magazin für Biowissenschaften - Abstractbook - Sonderausgabe
Referierte Publikation:Ja
Open Access:Ja
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Seitenbereich:Seite 140
Verlag:Springer
ISSN:0947-0867
Status:veröffentlicht
Stichwörter:survivability of environmental microorganisms, spaceflight relevant antimicrobial surfaces, bioburden reduction, Acinetobacter radioresistens 50v1, ISS
Veranstaltungstitel:MICROBIOLOGY AND INFECTION 2017, 5th Joint Conference of the DGHM & VAAM, VAAM Annual Meeting 2017, 69th Annual Meeting of the DGHM
Veranstaltungsort:Würzburg, Germany
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:05-08-March 2017
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:11 Jan 2018 13:41
Letzte Änderung:31 Jul 2019 20:15

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