Cited by 52Space Science and Extraterrestrial LifePlanetary Science and ExplorationBiocrusts and Microbial Ecology

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

Verseux, Cyprien, Baqué, Mickael, Cifariello, Riccardo, Fagliarone, Claudia, Raguse, Marina, Moeller, Ralf, Billi, Daniela·2017·Astrobiology

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. Key Words: Ionizing radiation—Linear energy transfer—Lithopanspermia—Cyanobacterial radioresistance—Chroococcidiopsis—Mars. Astrobiology 17, 118–125.

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Crossref · 10.1089/ast.2015.1450

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Authors
Verseux, C., Baqué, M., Cifariello, R., Fagliarone, C., Raguse, M., Moeller, R., & Billi, D.
Affiliations
  • University of Rome Tor Vergata (IT)
  • Department of Biology, Laboratory of Astrobiology and Molecular Biology of Cyanobacteria from Extreme Environments, University of Rome Tor Vergata, Rome, Italy.
  • Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR) (DE)
Corresponding author
Billi, Daniela
Venue
Astrobiology
Published
2017-02
Volume
17
Issue
2
Pages
118-125
ISSN
  • 1531-1074 (ISSN-L)
  • 1557-8070
OpenAlex
W2585881061
Cited by
52
References
48
Citations by year
2025: 3 · 2024: 5 · 2023: 7 · 2022: 11 · 2021: 5 · 2020: 4 · 2019: 7 · 2018: 6 · 2017: 4
FWCI
3.14
Type
journal article
Language
en
Open access
closed
Locations
  • Astrobiology (publishedVersion)
  • PubMed (publishedVersion)
  • Cineca Institutional Research Information System (Tor Vergata University) (submittedVersion)
  • elib (German Aerospace Center) (submittedVersion)
Funders
  • Deutsches Zentrum für Luft- und Raumfahrt
  • Università degli Studi di Roma Tor Vergata
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Space Science and Extraterrestrial Life
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Planetary Science and Exploration
  • Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Biocrusts and Microbial Ecology
Keywords
Chroococcidiopsis, cyanobacteria, radioresistance (biology), ionizing radiation, linear energy transfer, lithopanspermia, Mars, DNA damage, cell membrane damage, heavy ions, X-rays, gamma radiation
MeSH terms
Cyanobacteria, Cell Membrane, Desiccation, DNA Damage, DNA, Bacterial, Radiation Tolerance, Radiation, Ionizing, X-Rays, Polymerase Chain Reaction, Genome, Bacterial, Random Amplified Polymorphic DNA Technique, Microbial Viability

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