Abrupt permafrost thaw triggers activity of copiotrophs and microbiome predators
Permafrost soils store a substantial part of the global soil carbon and nitrogen. However, global warming causes abrupt erosion and gradual thaw, which make these stocks vulnerable to microbial decomposition into greenhouse gases. Here, we investigated the microbial response to abrupt in situ permaf...
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ftpubmed:oai:pubmedcentral.nih.gov:10599396 2023-11-12T04:24:20+01:00 Abrupt permafrost thaw triggers activity of copiotrophs and microbiome predators Scheel, Maria Zervas, Athanasios Rijkers, Ruud Tveit, Alexander T Ekelund, Flemming Campuzano Jiménez, Francisco Christensen, Torben R Jacobsen, Carsten S 2023-10-05 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10599396/ http://www.ncbi.nlm.nih.gov/pubmed/37796894 https://doi.org/10.1093/femsec/fiad123 en eng Oxford University Press http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10599396/ http://www.ncbi.nlm.nih.gov/pubmed/37796894 http://dx.doi.org/10.1093/femsec/fiad123 © The Author(s) 2023. Published by Oxford University Press on behalf of FEMS. https://creativecommons.org/licenses/by-nc/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (https://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com FEMS Microbiol Ecol Research Article Text 2023 ftpubmed https://doi.org/10.1093/femsec/fiad123 2023-10-29T01:02:55Z Permafrost soils store a substantial part of the global soil carbon and nitrogen. However, global warming causes abrupt erosion and gradual thaw, which make these stocks vulnerable to microbial decomposition into greenhouse gases. Here, we investigated the microbial response to abrupt in situ permafrost thaw. We sequenced the total RNA of a 1 m deep soil core consisting of up to 26 500-year-old permafrost material from an active abrupt erosion site. We analysed the microbial community in the active layer soil, the recently thawed, and the intact permafrost, and found maximum RNA:DNA ratios in recently thawed permafrost indicating a high microbial activity. In thawed permafrost, potentially copiotrophic Burkholderiales and Sphingobacteriales, but also microbiome predators dominated the community. Overall, both thaw-dependent and long-term soil properties significantly correlated with changes in community composition, as did microbiome predator abundance. Bacterial predators were dominated in shallower depths by Myxococcota, while protozoa, especially Cercozoa and Ciliophora, almost tripled in relative abundance in thawed layers. Our findings highlight the ecological importance of a diverse interkingdom and active microbial community highly abundant in abruptly thawing permafrost, as well as predation as potential biological control mechanism. Text permafrost PubMed Central (PMC) FEMS Microbiology Ecology 99 11 |
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Research Article Scheel, Maria Zervas, Athanasios Rijkers, Ruud Tveit, Alexander T Ekelund, Flemming Campuzano Jiménez, Francisco Christensen, Torben R Jacobsen, Carsten S Abrupt permafrost thaw triggers activity of copiotrophs and microbiome predators |
topic_facet |
Research Article |
description |
Permafrost soils store a substantial part of the global soil carbon and nitrogen. However, global warming causes abrupt erosion and gradual thaw, which make these stocks vulnerable to microbial decomposition into greenhouse gases. Here, we investigated the microbial response to abrupt in situ permafrost thaw. We sequenced the total RNA of a 1 m deep soil core consisting of up to 26 500-year-old permafrost material from an active abrupt erosion site. We analysed the microbial community in the active layer soil, the recently thawed, and the intact permafrost, and found maximum RNA:DNA ratios in recently thawed permafrost indicating a high microbial activity. In thawed permafrost, potentially copiotrophic Burkholderiales and Sphingobacteriales, but also microbiome predators dominated the community. Overall, both thaw-dependent and long-term soil properties significantly correlated with changes in community composition, as did microbiome predator abundance. Bacterial predators were dominated in shallower depths by Myxococcota, while protozoa, especially Cercozoa and Ciliophora, almost tripled in relative abundance in thawed layers. Our findings highlight the ecological importance of a diverse interkingdom and active microbial community highly abundant in abruptly thawing permafrost, as well as predation as potential biological control mechanism. |
format |
Text |
author |
Scheel, Maria Zervas, Athanasios Rijkers, Ruud Tveit, Alexander T Ekelund, Flemming Campuzano Jiménez, Francisco Christensen, Torben R Jacobsen, Carsten S |
author_facet |
Scheel, Maria Zervas, Athanasios Rijkers, Ruud Tveit, Alexander T Ekelund, Flemming Campuzano Jiménez, Francisco Christensen, Torben R Jacobsen, Carsten S |
author_sort |
Scheel, Maria |
title |
Abrupt permafrost thaw triggers activity of copiotrophs and microbiome predators |
title_short |
Abrupt permafrost thaw triggers activity of copiotrophs and microbiome predators |
title_full |
Abrupt permafrost thaw triggers activity of copiotrophs and microbiome predators |
title_fullStr |
Abrupt permafrost thaw triggers activity of copiotrophs and microbiome predators |
title_full_unstemmed |
Abrupt permafrost thaw triggers activity of copiotrophs and microbiome predators |
title_sort |
abrupt permafrost thaw triggers activity of copiotrophs and microbiome predators |
publisher |
Oxford University Press |
publishDate |
2023 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10599396/ http://www.ncbi.nlm.nih.gov/pubmed/37796894 https://doi.org/10.1093/femsec/fiad123 |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
FEMS Microbiol Ecol |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10599396/ http://www.ncbi.nlm.nih.gov/pubmed/37796894 http://dx.doi.org/10.1093/femsec/fiad123 |
op_rights |
© The Author(s) 2023. Published by Oxford University Press on behalf of FEMS. https://creativecommons.org/licenses/by-nc/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (https://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com |
op_doi |
https://doi.org/10.1093/femsec/fiad123 |
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FEMS Microbiology Ecology |
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99 |
container_issue |
11 |
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1782338839434493952 |