Iron Ion Particle Radiation Resistance of Dried Colonies of Cryomyces antarcticus Embedded in Martian Regolith Analogues
Among the celestial bodies in the Solar System, Mars currently represents the main target for the search for life beyond Earth. However, its surface is constantly exposed to high doses of cosmic rays (CRs) that may pose a threat to any biological system. For this reason, investigations into the limi...
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2020
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Online Access: | https://doi.org/10.3390/life10120306 https://doaj.org/article/76f9cbe4c2a942af889ee6cca7ffb82d |
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ftdoajarticles:oai:doaj.org/article:76f9cbe4c2a942af889ee6cca7ffb82d 2023-05-15T13:52:54+02:00 Iron Ion Particle Radiation Resistance of Dried Colonies of Cryomyces antarcticus Embedded in Martian Regolith Analogues Lorenzo Aureli Claudia Pacelli Alessia Cassaro Akira Fujimori Ralf Moeller Silvano Onofri 2020-11-01T00:00:00Z https://doi.org/10.3390/life10120306 https://doaj.org/article/76f9cbe4c2a942af889ee6cca7ffb82d EN eng MDPI AG https://www.mdpi.com/2075-1729/10/12/306 https://doaj.org/toc/2075-1729 doi:10.3390/life10120306 2075-1729 https://doaj.org/article/76f9cbe4c2a942af889ee6cca7ffb82d Life, Vol 10, Iss 306, p 306 (2020) cosmic rays accelerated iron ions Mars fungi life on Mars Science Q article 2020 ftdoajarticles https://doi.org/10.3390/life10120306 2022-12-30T20:28:19Z Among the celestial bodies in the Solar System, Mars currently represents the main target for the search for life beyond Earth. However, its surface is constantly exposed to high doses of cosmic rays (CRs) that may pose a threat to any biological system. For this reason, investigations into the limits of resistance of life to space relevant radiation is fundamental to speculate on the chance of finding extraterrestrial organisms on Mars. In the present work, as part of the STARLIFE project, the responses of dried colonies of the black fungus Cryomyces antarcticus Culture Collection of Fungi from Extreme Environments (CCFEE) 515 to the exposure to accelerated iron (LET: 200 keV/μm) ions, which mimic part of CRs spectrum, were investigated. Samples were exposed to the iron ions up to 1000 Gy in the presence of Martian regolith analogues. Our results showed an extraordinary resistance of the fungus in terms of survival, recovery of metabolic activity and DNA integrity. These experiments give new insights into the survival probability of possible terrestrial-like life forms on the present or past Martian surface and shallow subsurface environments. Article in Journal/Newspaper Antarc* antarcticus Directory of Open Access Journals: DOAJ Articles Life 10 12 306 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
cosmic rays accelerated iron ions Mars fungi life on Mars Science Q |
spellingShingle |
cosmic rays accelerated iron ions Mars fungi life on Mars Science Q Lorenzo Aureli Claudia Pacelli Alessia Cassaro Akira Fujimori Ralf Moeller Silvano Onofri Iron Ion Particle Radiation Resistance of Dried Colonies of Cryomyces antarcticus Embedded in Martian Regolith Analogues |
topic_facet |
cosmic rays accelerated iron ions Mars fungi life on Mars Science Q |
description |
Among the celestial bodies in the Solar System, Mars currently represents the main target for the search for life beyond Earth. However, its surface is constantly exposed to high doses of cosmic rays (CRs) that may pose a threat to any biological system. For this reason, investigations into the limits of resistance of life to space relevant radiation is fundamental to speculate on the chance of finding extraterrestrial organisms on Mars. In the present work, as part of the STARLIFE project, the responses of dried colonies of the black fungus Cryomyces antarcticus Culture Collection of Fungi from Extreme Environments (CCFEE) 515 to the exposure to accelerated iron (LET: 200 keV/μm) ions, which mimic part of CRs spectrum, were investigated. Samples were exposed to the iron ions up to 1000 Gy in the presence of Martian regolith analogues. Our results showed an extraordinary resistance of the fungus in terms of survival, recovery of metabolic activity and DNA integrity. These experiments give new insights into the survival probability of possible terrestrial-like life forms on the present or past Martian surface and shallow subsurface environments. |
format |
Article in Journal/Newspaper |
author |
Lorenzo Aureli Claudia Pacelli Alessia Cassaro Akira Fujimori Ralf Moeller Silvano Onofri |
author_facet |
Lorenzo Aureli Claudia Pacelli Alessia Cassaro Akira Fujimori Ralf Moeller Silvano Onofri |
author_sort |
Lorenzo Aureli |
title |
Iron Ion Particle Radiation Resistance of Dried Colonies of Cryomyces antarcticus Embedded in Martian Regolith Analogues |
title_short |
Iron Ion Particle Radiation Resistance of Dried Colonies of Cryomyces antarcticus Embedded in Martian Regolith Analogues |
title_full |
Iron Ion Particle Radiation Resistance of Dried Colonies of Cryomyces antarcticus Embedded in Martian Regolith Analogues |
title_fullStr |
Iron Ion Particle Radiation Resistance of Dried Colonies of Cryomyces antarcticus Embedded in Martian Regolith Analogues |
title_full_unstemmed |
Iron Ion Particle Radiation Resistance of Dried Colonies of Cryomyces antarcticus Embedded in Martian Regolith Analogues |
title_sort |
iron ion particle radiation resistance of dried colonies of cryomyces antarcticus embedded in martian regolith analogues |
publisher |
MDPI AG |
publishDate |
2020 |
url |
https://doi.org/10.3390/life10120306 https://doaj.org/article/76f9cbe4c2a942af889ee6cca7ffb82d |
genre |
Antarc* antarcticus |
genre_facet |
Antarc* antarcticus |
op_source |
Life, Vol 10, Iss 306, p 306 (2020) |
op_relation |
https://www.mdpi.com/2075-1729/10/12/306 https://doaj.org/toc/2075-1729 doi:10.3390/life10120306 2075-1729 https://doaj.org/article/76f9cbe4c2a942af889ee6cca7ffb82d |
op_doi |
https://doi.org/10.3390/life10120306 |
container_title |
Life |
container_volume |
10 |
container_issue |
12 |
container_start_page |
306 |
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1766257756168257536 |