Survival, metabolic activity, and ultrastructural damages of Antarctic black fungus in perchlorates media
Evidence from recent Mars landers identified the presence of perchlorates salts at 1 wt % in regolith and their widespread distribution on the Martian surface that has been hypothesized as a critical chemical hazard for putative life forms. However, the hypersaline environment may also potentially p...
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ftpubmed:oai:pubmedcentral.nih.gov:9744811 2023-05-15T13:35:02+02:00 Survival, metabolic activity, and ultrastructural damages of Antarctic black fungus in perchlorates media Cassaro, Alessia Pacelli, Claudia Onofri, Silvano 2022-11-29 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9744811/ https://doi.org/10.3389/fmicb.2022.992077 en eng Frontiers Media S.A. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9744811/ http://dx.doi.org/10.3389/fmicb.2022.992077 Copyright © 2022 Cassaro, Pacelli and Onofri. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. CC-BY Front Microbiol Microbiology Text 2022 ftpubmed https://doi.org/10.3389/fmicb.2022.992077 2022-12-18T02:05:52Z Evidence from recent Mars landers identified the presence of perchlorates salts at 1 wt % in regolith and their widespread distribution on the Martian surface that has been hypothesized as a critical chemical hazard for putative life forms. However, the hypersaline environment may also potentially preserve life and its biomolecules over geological timescales. The high concentration of natural perchlorates is scarcely reported on Earth. The presence of perchlorates in soil and ice has been recorded in some extreme environments including the McMurdo Dry Valleys in Antarctica, one of the best terrestrial analogues for Mars. In the frame of “Life in space” Italian astrobiology project, the polyextremophilic black fungus Cryomyces antarcticus, a eukaryotic test organism isolated from the Antarctic cryptoendolithic communities, has been tested for its resistance, when grown on different hypersaline substrata. In addition, C. antarcticus was grown on Martian relevant perchlorate medium (0.4 wt% of Mg(ClO(4))(2) and 0.6 wt% of Ca(ClO(4))(2)) to investigate the possibility for the fungus to survive in Martian environment. Here, the results indicate a good survivability and metabolic activity recovery of the black fungus when grown on four Martian relevant perchlorates. A low percentage of damaged cellular membranes have been found, confirming the ultrastructural investigation. Text Antarc* Antarctic Antarctica antarcticus McMurdo Dry Valleys PubMed Central (PMC) Antarctic McMurdo Dry Valleys The Antarctic Frontiers in Microbiology 13 |
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English |
topic |
Microbiology |
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Microbiology Cassaro, Alessia Pacelli, Claudia Onofri, Silvano Survival, metabolic activity, and ultrastructural damages of Antarctic black fungus in perchlorates media |
topic_facet |
Microbiology |
description |
Evidence from recent Mars landers identified the presence of perchlorates salts at 1 wt % in regolith and their widespread distribution on the Martian surface that has been hypothesized as a critical chemical hazard for putative life forms. However, the hypersaline environment may also potentially preserve life and its biomolecules over geological timescales. The high concentration of natural perchlorates is scarcely reported on Earth. The presence of perchlorates in soil and ice has been recorded in some extreme environments including the McMurdo Dry Valleys in Antarctica, one of the best terrestrial analogues for Mars. In the frame of “Life in space” Italian astrobiology project, the polyextremophilic black fungus Cryomyces antarcticus, a eukaryotic test organism isolated from the Antarctic cryptoendolithic communities, has been tested for its resistance, when grown on different hypersaline substrata. In addition, C. antarcticus was grown on Martian relevant perchlorate medium (0.4 wt% of Mg(ClO(4))(2) and 0.6 wt% of Ca(ClO(4))(2)) to investigate the possibility for the fungus to survive in Martian environment. Here, the results indicate a good survivability and metabolic activity recovery of the black fungus when grown on four Martian relevant perchlorates. A low percentage of damaged cellular membranes have been found, confirming the ultrastructural investigation. |
format |
Text |
author |
Cassaro, Alessia Pacelli, Claudia Onofri, Silvano |
author_facet |
Cassaro, Alessia Pacelli, Claudia Onofri, Silvano |
author_sort |
Cassaro, Alessia |
title |
Survival, metabolic activity, and ultrastructural damages of Antarctic black fungus in perchlorates media |
title_short |
Survival, metabolic activity, and ultrastructural damages of Antarctic black fungus in perchlorates media |
title_full |
Survival, metabolic activity, and ultrastructural damages of Antarctic black fungus in perchlorates media |
title_fullStr |
Survival, metabolic activity, and ultrastructural damages of Antarctic black fungus in perchlorates media |
title_full_unstemmed |
Survival, metabolic activity, and ultrastructural damages of Antarctic black fungus in perchlorates media |
title_sort |
survival, metabolic activity, and ultrastructural damages of antarctic black fungus in perchlorates media |
publisher |
Frontiers Media S.A. |
publishDate |
2022 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9744811/ https://doi.org/10.3389/fmicb.2022.992077 |
geographic |
Antarctic McMurdo Dry Valleys The Antarctic |
geographic_facet |
Antarctic McMurdo Dry Valleys The Antarctic |
genre |
Antarc* Antarctic Antarctica antarcticus McMurdo Dry Valleys |
genre_facet |
Antarc* Antarctic Antarctica antarcticus McMurdo Dry Valleys |
op_source |
Front Microbiol |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9744811/ http://dx.doi.org/10.3389/fmicb.2022.992077 |
op_rights |
Copyright © 2022 Cassaro, Pacelli and Onofri. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fmicb.2022.992077 |
container_title |
Frontiers in Microbiology |
container_volume |
13 |
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1766060370844188672 |