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Evaluation of the Resistance of Chroococcidiopsis spp. to Sparsely and Densely Ionizing Irradiation

Verseux, Cyprien and Baqué, Mickael and Cifariello, Riccardo and Fagliarone, Claudia and Raguse, Marina and Moeller, Ralf and Billi, Daniela (2017) Evaluation of the Resistance of Chroococcidiopsis spp. to Sparsely and Densely Ionizing Irradiation. Astrobiology, 17 (2), pp. 118-125. Mary Ann Liebert Inc.. DOI: 10.1089/ast.2015.1450 ISSN 1531-1074

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Official URL: http://online.liebertpub.com/doi/abs/10.1089/ast.2015.1450?src=recsys

Abstract

Studying the resistance of cyanobacteria to ionizing radiation provides relevant information regarding astrobiology-related topics including the search for life on Mars, lithopanspermia, and biological life-support systems. Here, we report on the resistance of desert cyanobacteria of the genus Chroococcidiopsis, which were exposed (as part of the STARLIFE series of experiments) in both hydrated and dried states to ionizing radiation with different linear energy transfer values (0.2 to 200 keV/μm). Irradiation with up to 1 kGy of He or Si ions, 2 kGy of Fe ions, 5 kGy of X-rays, or 11.59 kGy of γ rays (60Co) did not eradicate Chroococcidiopsis populations, nor did it induce detectable damage to DNA or plasma membranes. The relevance of these results for astrobiology is briefly discussed.

Item URL in elib:https://elib.dlr.de/111359/
Document Type:Article
Title:Evaluation of the Resistance of Chroococcidiopsis spp. to Sparsely and Densely Ionizing Irradiation
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Verseux, CyprienDepartment of Biology, Laboratory of Astrobiology and Molecular Biology of Cyanobacteria from Extreme Environments, University of Rome Tor Vergata, Rome, Italy.UNSPECIFIED
Baqué, MickaelDepartment of Biology, University of Rome Tor Vergata, Rome, Italy and Astrobiological Laboratories Research Group, Institute of Planetary Research, Management and Infrastructure, German Aerospace Center (DLR), Berlin, Germany.UNSPECIFIED
Cifariello, RiccardoDepartment of Biology, Laboratory of Astrobiology and Molecular Biology of Cyanobacteria from Extreme Environments, University of Rome Tor Vergata, Rome, Italy.UNSPECIFIED
Fagliarone, ClaudiaDepartment of Biology, Laboratory of Astrobiology and Molecular Biology of Cyanobacteria from Extreme Environments, University of Rome Tor Vergata, Rome, Italy.UNSPECIFIED
Raguse, MarinaSpace Microbiology Research Group, Radiation Biology Department, Institute of Aerospace Medicine, German Aerospace Center (DLR), Cologne, Germany.UNSPECIFIED
Moeller, RalfSpace Microbiology Research Group, Radiation Biology Department, Institute of Aerospace Medicine, German Aerospace Center (DLR), Cologne, Germany.UNSPECIFIED
Billi, DanielaDepartment of Biology, Laboratory of Astrobiology and Molecular Biology of Cyanobacteria from Extreme Environments, University of Rome Tor Vergata, Rome, Italy.UNSPECIFIED
Date:2017
Journal or Publication Title:Astrobiology
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:17
DOI :10.1089/ast.2015.1450
Page Range:pp. 118-125
Publisher:Mary Ann Liebert Inc.
ISSN:1531-1074
Status:Published
Keywords:Ionizing Radiation, Linear energy Transfer, Lithopanspermia, Cyanobacterial radioresistance, Chroococcidiopsis, Mars
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Research under Space Conditions
DLR - Research area:Raumfahrt
DLR - Program:R FR - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):R - Vorhaben Strahlenbiologie, R - Vorhaben Planetary Evolution and Life
Location: Berlin-Adlershof , Köln-Porz
Institutes and Institutions:Institute of Planetary Research > Leitungsbereich PF
Institute of Aerospace Medicine > Radiation Biology
Deposited By: Kopp, Kerstin
Deposited On:07 Mar 2017 12:53
Last Modified:06 Sep 2019 15:23

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