Geology defines microbiome structure and composition in nunataks and valleys of the Sør Rondane Mountains, East Antarctica
peer reviewed Understanding the relation between terrestrial microorganisms and edaphic factors in the Antarctic can provide insights into their potential response to environmental changes. Here we examined the composition of bacterial and micro-eukaryotic communities using amplicon sequencing of rR...
Published in: | Frontiers in Microbiology |
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2024
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Online Access: | https://orbi.uliege.be/handle/2268/312869 https://orbi.uliege.be/bitstream/2268/312869/1/fmicb-15-1316633Savaglia.pdf https://doi.org/10.3389/fmicb.2024.1316633 |
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ftorbi:oai:orbi.ulg.ac.be:2268/312869 2024-04-21T07:48:53+00:00 Geology defines microbiome structure and composition in nunataks and valleys of the Sør Rondane Mountains, East Antarctica Savaglia, Valentina Lambrechts, Sam Tytgat, Bjorn Vanhellemont, Quinten Elster, Josef Willems, Anne Wilmotte, Annick Verleyen, Elie Vyverman, Wim InBios - Integrative Biological Sciences - ULiège BE 2024-02-06 https://orbi.uliege.be/handle/2268/312869 https://orbi.uliege.be/bitstream/2268/312869/1/fmicb-15-1316633Savaglia.pdf https://doi.org/10.3389/fmicb.2024.1316633 en eng Frontiers Media SA https://www.frontiersin.org/articles/10.3389/fmicb.2024.1316633/full urn:issn:1664-302X https://orbi.uliege.be/handle/2268/312869 info:hdl:2268/312869 https://orbi.uliege.be/bitstream/2268/312869/1/fmicb-15-1316633Savaglia.pdf doi:10.3389/fmicb.2024.1316633 scopus-id:2-s2.0-85185316352 open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess Frontiers in Microbiology, 15, 1316633 (2024-02-06) Microbiology microbial communities Antarctica environmental changes prokaryotes eukaryotes SSU rRNA metabarcoding Life sciences Environmental sciences & ecology Sciences du vivant Sciences de l’environnement & écologie Microbiologie journal article http://purl.org/coar/resource_type/c_6501 info:eu-repo/semantics/article peer reviewed 2024 ftorbi https://doi.org/10.3389/fmicb.2024.1316633 2024-03-27T15:00:30Z peer reviewed Understanding the relation between terrestrial microorganisms and edaphic factors in the Antarctic can provide insights into their potential response to environmental changes. Here we examined the composition of bacterial and micro-eukaryotic communities using amplicon sequencing of rRNA genes in 105 soil samples from the Sør Rondane Mountains (East Antarctica), differing in bedrock or substrate type and associated physicochemical conditions. Although the two most widespread taxa (Acidobacteriota and Chlorophyta) were relatively abundant in each sample, multivariate analysis and co-occurrence networks revealed pronounced differences in community structure depending on substrate type. In moraine substrates, Actinomycetota and Cercozoa were the most abundant bacterial and eukaryotic phyla, whereas on gneiss, granite and marble substrates, Cyanobacteriota and Metazoa were the dominant bacterial and eukaryotic taxa. However, at lower taxonomic level, a distinct differentiation was observed within the Cyanobacteriota phylum depending on substrate type, with granite being dominated by the Nostocaceae family and marble by the Chroococcidiopsaceae family. Surprisingly, metazoans were relatively abundant according to the 18S rRNA dataset, even in samples from the most arid sites, such as moraines in Austkampane and Widerøefjellet (“Dry Valley”). Overall, our study shows that different substrate types support distinct microbial communities, and that mineral soil diversity is a major determinant of terrestrial microbial diversity in inland Antarctic nunataks and valleys. MICROBIAN Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica University of Liège: ORBi (Open Repository and Bibliography) Frontiers in Microbiology 15 |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
Microbiology microbial communities Antarctica environmental changes prokaryotes eukaryotes SSU rRNA metabarcoding Life sciences Environmental sciences & ecology Sciences du vivant Sciences de l’environnement & écologie Microbiologie |
spellingShingle |
Microbiology microbial communities Antarctica environmental changes prokaryotes eukaryotes SSU rRNA metabarcoding Life sciences Environmental sciences & ecology Sciences du vivant Sciences de l’environnement & écologie Microbiologie Savaglia, Valentina Lambrechts, Sam Tytgat, Bjorn Vanhellemont, Quinten Elster, Josef Willems, Anne Wilmotte, Annick Verleyen, Elie Vyverman, Wim Geology defines microbiome structure and composition in nunataks and valleys of the Sør Rondane Mountains, East Antarctica |
topic_facet |
Microbiology microbial communities Antarctica environmental changes prokaryotes eukaryotes SSU rRNA metabarcoding Life sciences Environmental sciences & ecology Sciences du vivant Sciences de l’environnement & écologie Microbiologie |
description |
peer reviewed Understanding the relation between terrestrial microorganisms and edaphic factors in the Antarctic can provide insights into their potential response to environmental changes. Here we examined the composition of bacterial and micro-eukaryotic communities using amplicon sequencing of rRNA genes in 105 soil samples from the Sør Rondane Mountains (East Antarctica), differing in bedrock or substrate type and associated physicochemical conditions. Although the two most widespread taxa (Acidobacteriota and Chlorophyta) were relatively abundant in each sample, multivariate analysis and co-occurrence networks revealed pronounced differences in community structure depending on substrate type. In moraine substrates, Actinomycetota and Cercozoa were the most abundant bacterial and eukaryotic phyla, whereas on gneiss, granite and marble substrates, Cyanobacteriota and Metazoa were the dominant bacterial and eukaryotic taxa. However, at lower taxonomic level, a distinct differentiation was observed within the Cyanobacteriota phylum depending on substrate type, with granite being dominated by the Nostocaceae family and marble by the Chroococcidiopsaceae family. Surprisingly, metazoans were relatively abundant according to the 18S rRNA dataset, even in samples from the most arid sites, such as moraines in Austkampane and Widerøefjellet (“Dry Valley”). Overall, our study shows that different substrate types support distinct microbial communities, and that mineral soil diversity is a major determinant of terrestrial microbial diversity in inland Antarctic nunataks and valleys. MICROBIAN |
author2 |
InBios - Integrative Biological Sciences - ULiège BE |
format |
Article in Journal/Newspaper |
author |
Savaglia, Valentina Lambrechts, Sam Tytgat, Bjorn Vanhellemont, Quinten Elster, Josef Willems, Anne Wilmotte, Annick Verleyen, Elie Vyverman, Wim |
author_facet |
Savaglia, Valentina Lambrechts, Sam Tytgat, Bjorn Vanhellemont, Quinten Elster, Josef Willems, Anne Wilmotte, Annick Verleyen, Elie Vyverman, Wim |
author_sort |
Savaglia, Valentina |
title |
Geology defines microbiome structure and composition in nunataks and valleys of the Sør Rondane Mountains, East Antarctica |
title_short |
Geology defines microbiome structure and composition in nunataks and valleys of the Sør Rondane Mountains, East Antarctica |
title_full |
Geology defines microbiome structure and composition in nunataks and valleys of the Sør Rondane Mountains, East Antarctica |
title_fullStr |
Geology defines microbiome structure and composition in nunataks and valleys of the Sør Rondane Mountains, East Antarctica |
title_full_unstemmed |
Geology defines microbiome structure and composition in nunataks and valleys of the Sør Rondane Mountains, East Antarctica |
title_sort |
geology defines microbiome structure and composition in nunataks and valleys of the sør rondane mountains, east antarctica |
publisher |
Frontiers Media SA |
publishDate |
2024 |
url |
https://orbi.uliege.be/handle/2268/312869 https://orbi.uliege.be/bitstream/2268/312869/1/fmicb-15-1316633Savaglia.pdf https://doi.org/10.3389/fmicb.2024.1316633 |
genre |
Antarc* Antarctic Antarctica East Antarctica |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica |
op_source |
Frontiers in Microbiology, 15, 1316633 (2024-02-06) |
op_relation |
https://www.frontiersin.org/articles/10.3389/fmicb.2024.1316633/full urn:issn:1664-302X https://orbi.uliege.be/handle/2268/312869 info:hdl:2268/312869 https://orbi.uliege.be/bitstream/2268/312869/1/fmicb-15-1316633Savaglia.pdf doi:10.3389/fmicb.2024.1316633 scopus-id:2-s2.0-85185316352 |
op_rights |
open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3389/fmicb.2024.1316633 |
container_title |
Frontiers in Microbiology |
container_volume |
15 |
_version_ |
1796952050627510272 |