Endolithic Fungal Species Markers for Harshest Conditions in the McMurdo Dry Valleys, Antarctica
The microbial communities that inhabit lithic niches inside sandstone in the Antarctic McMurdo Dry Valleys of life's limits on Earth. The cryptoendolithic communities survive in these ice-free areas that have the lowest temperatures on Earth coupled with strong thermal fluctuations, extreme ari...
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ftunivtuscia:oai:dspace.unitus.it:2067/45903 2023-05-15T13:52:30+02:00 Endolithic Fungal Species Markers for Harshest Conditions in the McMurdo Dry Valleys, Antarctica Coleine, Claudia Pombubpa, Nuttapon Zucconi, Laura Onofri, Silvano Stajich, Jason E Selbmann, Laura 2020 ELETTRONICO http://hdl.handle.net/2067/45903 https://doi.org/10.3390/life10020013 https://dspace.unitus.it/handle/2067/44315 en eng LIFE 13 10 2 0024-3019 http://hdl.handle.net/2067/45903 doi:10.3390/life10020013 32041249 2-s2.0-85079539439 https://dspace.unitus.it/handle/2067/44315 restricted article 2020 ftunivtuscia https://doi.org/10.3390/life10020013 2022-05-01T15:20:30Z The microbial communities that inhabit lithic niches inside sandstone in the Antarctic McMurdo Dry Valleys of life's limits on Earth. The cryptoendolithic communities survive in these ice-free areas that have the lowest temperatures on Earth coupled with strong thermal fluctuations, extreme aridity, oligotrophy and high levels of solar and UV radiation. In this study, based on DNA metabarcoding, targeting the fungal Internal Transcribed Spacer region 1 (ITS1) and multivariate statistical analyses, we supply the first comprehensive overview onto the fungal diversity and composition of these communities sampled over a broad geographic area of the Antarctic hyper-arid cold desert. Six locations with surfaces that experience variable sun exposure were sampled to compare communities from a common area across a gradient of environmental pressure. The Operational Taxonomic Units (OTUs) identified were primarily members of the Ascomycota phylum, comprised mostly of the Lecanoromycetes and Dothideomycetes classes. The fungal species Friedmanniomyces endolithicus, endemic to Antarctica, was found to be a marker species to the harshest conditions occurring in the shady, south exposed rock surfaces. Analysis of community composition showed that sun exposure was an environmental property that explained community diversity and structured endolithic colonization. sì Article in Journal/Newspaper Antarc* Antarctic Antarctica McMurdo Dry Valleys Università degli studi della Tuscia: Unitus DSpace Antarctic The Antarctic McMurdo Dry Valleys Life 10 2 13 |
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Università degli studi della Tuscia: Unitus DSpace |
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ftunivtuscia |
language |
English |
description |
The microbial communities that inhabit lithic niches inside sandstone in the Antarctic McMurdo Dry Valleys of life's limits on Earth. The cryptoendolithic communities survive in these ice-free areas that have the lowest temperatures on Earth coupled with strong thermal fluctuations, extreme aridity, oligotrophy and high levels of solar and UV radiation. In this study, based on DNA metabarcoding, targeting the fungal Internal Transcribed Spacer region 1 (ITS1) and multivariate statistical analyses, we supply the first comprehensive overview onto the fungal diversity and composition of these communities sampled over a broad geographic area of the Antarctic hyper-arid cold desert. Six locations with surfaces that experience variable sun exposure were sampled to compare communities from a common area across a gradient of environmental pressure. The Operational Taxonomic Units (OTUs) identified were primarily members of the Ascomycota phylum, comprised mostly of the Lecanoromycetes and Dothideomycetes classes. The fungal species Friedmanniomyces endolithicus, endemic to Antarctica, was found to be a marker species to the harshest conditions occurring in the shady, south exposed rock surfaces. Analysis of community composition showed that sun exposure was an environmental property that explained community diversity and structured endolithic colonization. sì |
format |
Article in Journal/Newspaper |
author |
Coleine, Claudia Pombubpa, Nuttapon Zucconi, Laura Onofri, Silvano Stajich, Jason E Selbmann, Laura |
spellingShingle |
Coleine, Claudia Pombubpa, Nuttapon Zucconi, Laura Onofri, Silvano Stajich, Jason E Selbmann, Laura Endolithic Fungal Species Markers for Harshest Conditions in the McMurdo Dry Valleys, Antarctica |
author_facet |
Coleine, Claudia Pombubpa, Nuttapon Zucconi, Laura Onofri, Silvano Stajich, Jason E Selbmann, Laura |
author_sort |
Coleine, Claudia |
title |
Endolithic Fungal Species Markers for Harshest Conditions in the McMurdo Dry Valleys, Antarctica |
title_short |
Endolithic Fungal Species Markers for Harshest Conditions in the McMurdo Dry Valleys, Antarctica |
title_full |
Endolithic Fungal Species Markers for Harshest Conditions in the McMurdo Dry Valleys, Antarctica |
title_fullStr |
Endolithic Fungal Species Markers for Harshest Conditions in the McMurdo Dry Valleys, Antarctica |
title_full_unstemmed |
Endolithic Fungal Species Markers for Harshest Conditions in the McMurdo Dry Valleys, Antarctica |
title_sort |
endolithic fungal species markers for harshest conditions in the mcmurdo dry valleys, antarctica |
publishDate |
2020 |
url |
http://hdl.handle.net/2067/45903 https://doi.org/10.3390/life10020013 https://dspace.unitus.it/handle/2067/44315 |
geographic |
Antarctic The Antarctic McMurdo Dry Valleys |
geographic_facet |
Antarctic The Antarctic McMurdo Dry Valleys |
genre |
Antarc* Antarctic Antarctica McMurdo Dry Valleys |
genre_facet |
Antarc* Antarctic Antarctica McMurdo Dry Valleys |
op_relation |
LIFE 13 10 2 0024-3019 http://hdl.handle.net/2067/45903 doi:10.3390/life10020013 32041249 2-s2.0-85079539439 https://dspace.unitus.it/handle/2067/44315 |
op_rights |
restricted |
op_doi |
https://doi.org/10.3390/life10020013 |
container_title |
Life |
container_volume |
10 |
container_issue |
2 |
container_start_page |
13 |
_version_ |
1766256823167352832 |