Geology and elevation shape bacterial assembly in Antarctic endolithic communities
Ice free areas of continental Antarctica are among the coldest and driest environments on Earth, and yet, they support surprisingly diverse and highly adapted microbial communities. Endolithic growth is one of the key adaptations to such extreme environments and often represents the dominant life-fo...
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Online Access: | https://hdl.handle.net/10449/83878 https://doi.org/10.1016/j.scitotenv.2023.168050 |
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ftiasma:oai:openpub.fmach.it:10449/83878 2024-04-21T07:52:39+00:00 Geology and elevation shape bacterial assembly in Antarctic endolithic communities Larsen, Stefano Coleine, Claudia Albanese, Davide Stegen, James C. Selbmann, Laura Donati, Claudio Larsen, S. Coleine, C. Albanese, D. Stegen, J.C. Selbmann, L. Donati, C. 2024 https://hdl.handle.net/10449/83878 https://doi.org/10.1016/j.scitotenv.2023.168050 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:001107759400001 volume:907 journal:SCIENCE OF THE TOTAL ENVIRONMENT https://hdl.handle.net/10449/83878 doi:10.1016/j.scitotenv.2023.168050 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85175491327 info:eu-repo/semantics/openAccess Antarctica Endolithic microbiome Altitude Sandstone Granite Community assembly Shotgun metagenomics Settore BIO/07 - ECOLOGIA info:eu-repo/semantics/article 2024 ftiasma https://doi.org/10.1016/j.scitotenv.2023.168050 2024-03-27T17:48:56Z Ice free areas of continental Antarctica are among the coldest and driest environments on Earth, and yet, they support surprisingly diverse and highly adapted microbial communities. Endolithic growth is one of the key adaptations to such extreme environments and often represents the dominant life-form. Despite growing scientific interest, little is known of the mechanisms that influence the assembly of endolithic microbiomes across these harsh environments. Here, we used metagenomics to examine the diversity and assembly of endolithic bacterial communities across Antarctica within different rock types and over a large elevation range. While granite supported richer and more heterogeneous communities than sandstone, elevation had no apparent effect on taxonomic richness, regardless of rock type. Conversely, elevation was clearly associated with turnover in community composition, with the deterministic process of variable selection driving microbial assembly along the elevation gradient. The turnover associated with elevation was modulated by geology, whereby for a given elevation difference, turnover was consistently larger between communities inhabiting different rock types. Overall, selection imposed by elevation and geology appeared stronger than turnover related to other spatially-structured environmental drivers. Our findings indicate that at the cold-arid limit of life on Earth, geology and elevation are key determinants of endolithic bacterial heterogeneity. This also suggests that warming temperatures may threaten the persistence of such extreme-adapted organisms Article in Journal/Newspaper Antarc* Antarctic Antarctica Fondazione Edmund Mach: IRIS-OpenPub Science of The Total Environment 907 168050 |
institution |
Open Polar |
collection |
Fondazione Edmund Mach: IRIS-OpenPub |
op_collection_id |
ftiasma |
language |
English |
topic |
Antarctica Endolithic microbiome Altitude Sandstone Granite Community assembly Shotgun metagenomics Settore BIO/07 - ECOLOGIA |
spellingShingle |
Antarctica Endolithic microbiome Altitude Sandstone Granite Community assembly Shotgun metagenomics Settore BIO/07 - ECOLOGIA Larsen, Stefano Coleine, Claudia Albanese, Davide Stegen, James C. Selbmann, Laura Donati, Claudio Geology and elevation shape bacterial assembly in Antarctic endolithic communities |
topic_facet |
Antarctica Endolithic microbiome Altitude Sandstone Granite Community assembly Shotgun metagenomics Settore BIO/07 - ECOLOGIA |
description |
Ice free areas of continental Antarctica are among the coldest and driest environments on Earth, and yet, they support surprisingly diverse and highly adapted microbial communities. Endolithic growth is one of the key adaptations to such extreme environments and often represents the dominant life-form. Despite growing scientific interest, little is known of the mechanisms that influence the assembly of endolithic microbiomes across these harsh environments. Here, we used metagenomics to examine the diversity and assembly of endolithic bacterial communities across Antarctica within different rock types and over a large elevation range. While granite supported richer and more heterogeneous communities than sandstone, elevation had no apparent effect on taxonomic richness, regardless of rock type. Conversely, elevation was clearly associated with turnover in community composition, with the deterministic process of variable selection driving microbial assembly along the elevation gradient. The turnover associated with elevation was modulated by geology, whereby for a given elevation difference, turnover was consistently larger between communities inhabiting different rock types. Overall, selection imposed by elevation and geology appeared stronger than turnover related to other spatially-structured environmental drivers. Our findings indicate that at the cold-arid limit of life on Earth, geology and elevation are key determinants of endolithic bacterial heterogeneity. This also suggests that warming temperatures may threaten the persistence of such extreme-adapted organisms |
author2 |
Larsen, S. Coleine, C. Albanese, D. Stegen, J.C. Selbmann, L. Donati, C. |
format |
Article in Journal/Newspaper |
author |
Larsen, Stefano Coleine, Claudia Albanese, Davide Stegen, James C. Selbmann, Laura Donati, Claudio |
author_facet |
Larsen, Stefano Coleine, Claudia Albanese, Davide Stegen, James C. Selbmann, Laura Donati, Claudio |
author_sort |
Larsen, Stefano |
title |
Geology and elevation shape bacterial assembly in Antarctic endolithic communities |
title_short |
Geology and elevation shape bacterial assembly in Antarctic endolithic communities |
title_full |
Geology and elevation shape bacterial assembly in Antarctic endolithic communities |
title_fullStr |
Geology and elevation shape bacterial assembly in Antarctic endolithic communities |
title_full_unstemmed |
Geology and elevation shape bacterial assembly in Antarctic endolithic communities |
title_sort |
geology and elevation shape bacterial assembly in antarctic endolithic communities |
publishDate |
2024 |
url |
https://hdl.handle.net/10449/83878 https://doi.org/10.1016/j.scitotenv.2023.168050 |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:001107759400001 volume:907 journal:SCIENCE OF THE TOTAL ENVIRONMENT https://hdl.handle.net/10449/83878 doi:10.1016/j.scitotenv.2023.168050 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85175491327 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.scitotenv.2023.168050 |
container_title |
Science of The Total Environment |
container_volume |
907 |
container_start_page |
168050 |
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1796935849099657216 |