The Responses of the Black Fungus Cryomyces Antarcticus to High Doses of Accelerated Helium Ions Radiation within Martian Regolith Simulants and Their Relevance for Mars
One of the primary current astrobiological goals is to understand the limits of microbial resistance to extraterrestrial conditions. Much attention is paid to ionizing radiation, since it can prevent the preservation and spread of life outside the Earth. The aim of this research was to study the imp...
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ftnirs:oai:repo.qst.go.jp:00080267 2023-05-15T13:57:23+02:00 The Responses of the Black Fungus Cryomyces Antarcticus to High Doses of Accelerated Helium Ions Radiation within Martian Regolith Simulants and Their Relevance for Mars Pacelli Claudia Cassaro Alessia Aureli Lorenzo Moeller Ralf Fujimori Akira Onofri Silvano 2020-08 https://repo.qst.go.jp/?action=repository_uri&item_id=80267 http://id.nii.ac.jp/1657/00080249/ en eng 10.3390/life10080130 https://repo.qst.go.jp/?action=repository_uri&item_id=80267 http://id.nii.ac.jp/1657/00080249/ life, 10(8), (2020-08) 2075-1729 https://www.mdpi.com/2075-1729/10/8/130 Journal Article 2020 ftnirs 2021-12-30T08:15:14Z One of the primary current astrobiological goals is to understand the limits of microbial resistance to extraterrestrial conditions. Much attention is paid to ionizing radiation, since it can prevent the preservation and spread of life outside the Earth. The aim of this research was to study the impact of accelerated He ions (150 MeV/n, up to 1 kGy) as a component of the galactic cosmic rays on the black fungus C. antarcticus when mixed with Antarctic sandstones—the substratum ofits natural habitat—and two Martian regolith simulants, which mimics two different evolutionary stages of Mars. The high dose of 1 kGy was used to assess the effect of dose accumulation in dormant cells within minerals, under long-term irradiation estimated on a geological time scale. The data obtained suggests that viable Earth-like microorganisms can be preserved in the dormant state in the near-surface scenario for approximately 322,000 and 110,000 Earth years within Martian regolith that mimic early and present Mars environmental conditions, respectively. In addition, the results of the study indicate the possibility of maintaining traces within regolith, as demonstrated by the identification of melanin pigments through UltraViolet-visible (UV-vis) spectrophotometric approach. Article in Journal/Newspaper Antarc* Antarctic antarcticus National Institute of Radiological Science: NIRS-Repository Antarctic |
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National Institute of Radiological Science: NIRS-Repository |
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English |
description |
One of the primary current astrobiological goals is to understand the limits of microbial resistance to extraterrestrial conditions. Much attention is paid to ionizing radiation, since it can prevent the preservation and spread of life outside the Earth. The aim of this research was to study the impact of accelerated He ions (150 MeV/n, up to 1 kGy) as a component of the galactic cosmic rays on the black fungus C. antarcticus when mixed with Antarctic sandstones—the substratum ofits natural habitat—and two Martian regolith simulants, which mimics two different evolutionary stages of Mars. The high dose of 1 kGy was used to assess the effect of dose accumulation in dormant cells within minerals, under long-term irradiation estimated on a geological time scale. The data obtained suggests that viable Earth-like microorganisms can be preserved in the dormant state in the near-surface scenario for approximately 322,000 and 110,000 Earth years within Martian regolith that mimic early and present Mars environmental conditions, respectively. In addition, the results of the study indicate the possibility of maintaining traces within regolith, as demonstrated by the identification of melanin pigments through UltraViolet-visible (UV-vis) spectrophotometric approach. |
format |
Article in Journal/Newspaper |
author |
Pacelli Claudia Cassaro Alessia Aureli Lorenzo Moeller Ralf Fujimori Akira Onofri Silvano |
spellingShingle |
Pacelli Claudia Cassaro Alessia Aureli Lorenzo Moeller Ralf Fujimori Akira Onofri Silvano The Responses of the Black Fungus Cryomyces Antarcticus to High Doses of Accelerated Helium Ions Radiation within Martian Regolith Simulants and Their Relevance for Mars |
author_facet |
Pacelli Claudia Cassaro Alessia Aureli Lorenzo Moeller Ralf Fujimori Akira Onofri Silvano |
author_sort |
Pacelli Claudia |
title |
The Responses of the Black Fungus Cryomyces Antarcticus to High Doses of Accelerated Helium Ions Radiation within Martian Regolith Simulants and Their Relevance for Mars |
title_short |
The Responses of the Black Fungus Cryomyces Antarcticus to High Doses of Accelerated Helium Ions Radiation within Martian Regolith Simulants and Their Relevance for Mars |
title_full |
The Responses of the Black Fungus Cryomyces Antarcticus to High Doses of Accelerated Helium Ions Radiation within Martian Regolith Simulants and Their Relevance for Mars |
title_fullStr |
The Responses of the Black Fungus Cryomyces Antarcticus to High Doses of Accelerated Helium Ions Radiation within Martian Regolith Simulants and Their Relevance for Mars |
title_full_unstemmed |
The Responses of the Black Fungus Cryomyces Antarcticus to High Doses of Accelerated Helium Ions Radiation within Martian Regolith Simulants and Their Relevance for Mars |
title_sort |
responses of the black fungus cryomyces antarcticus to high doses of accelerated helium ions radiation within martian regolith simulants and their relevance for mars |
publishDate |
2020 |
url |
https://repo.qst.go.jp/?action=repository_uri&item_id=80267 http://id.nii.ac.jp/1657/00080249/ |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic antarcticus |
genre_facet |
Antarc* Antarctic antarcticus |
op_source |
https://www.mdpi.com/2075-1729/10/8/130 |
op_relation |
10.3390/life10080130 https://repo.qst.go.jp/?action=repository_uri&item_id=80267 http://id.nii.ac.jp/1657/00080249/ life, 10(8), (2020-08) 2075-1729 |
_version_ |
1766265070257438720 |