Moeller, Ralf and Rohde, Manfred and Reitz, Guenther (2010) Effects of ionizing radiation on the survival of bacterial spores in artificial Martian regolith. Icarus: International Journal of Solar System Studies, 206 (2), pp. 783-786. Elsevier. DOI: 10.1016/j.icarus.2009.11.014. ISSN 0019-1035.
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Bacterial spores of Bacillus subtilis were used as a model system to study the effects of ionizing 33 radiation on the survivability of spores uncovered and covered with artificial Martian regolith. Spore 34 survival after X-ray exposure was mainly depending on the role of non-homologous end-joining 35 (NHEJ) as the major DNA double-strand break repair pathway during germination, the involvement of 36 major small, acid-soluble spore proteins (SASP) as DNA radioprotectants and the coverage by Martian 37 regolith, whereas spores covered with Martian regolith were significantly more sensitive to X-rays than 38 uncovered spores, which is mainly due to the interaction of X-rays with artificial Martian regolith 39 resulting in the formation of secondary electrons and reactive oxygen species.
|Title:||Effects of ionizing radiation on the survival of bacterial spores in artificial Martian regolith|
|Journal or Publication Title:||Icarus: International Journal of Solar System Studies|
|In Open Access:||No|
|In ISI Web of Science:||Yes|
|Page Range:||pp. 783-786|
|Keywords:||Bacillus spores, Mars, Regoliths, DNA repair, ionizing radiation, Astrobiology, Exobiology|
|HGF - Research field:||Aeronautics, Space and Transport (old)|
|HGF - Program:||Space (old)|
|HGF - Program Themes:||W FR - Forschung unter Weltraumbedingungen (old)|
|DLR - Research area:||Space|
|DLR - Program:||W FR - Forschung unter Weltraumbedingungen|
|DLR - Research theme (Project):||W - Vorhaben Strahlenbiologie (old)|
|Institutes and Institutions:||Institute of Aerospace Medicine > Radiation Biology|
|Deposited By:||Kerstin Kopp|
|Deposited On:||12 Mar 2010 09:44|
|Last Modified:||07 Feb 2013 20:19|
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