Seasonal Regime Shift in the Viral Communities of a Permafrost Thaw Lake
Permafrost thaw lakes including thermokarst lakes and ponds are ubiquitous features of Subarctic and Arctic landscapes and are hotspots of microbial activity. Input of terrestrial organic matter into the planktonic microbial loop of these lakes may greatly amplify global greenhouse gas emissions. Th...
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ftmdpi:oai:mdpi.com:/1999-4915/12/11/1204/ 2023-08-20T04:04:37+02:00 Seasonal Regime Shift in the Viral Communities of a Permafrost Thaw Lake Catherine Girard Valérie Langlois Adrien Vigneron Warwick F. Vincent Alexander I. Culley agris 2020-10-22 application/pdf https://doi.org/10.3390/v12111204 EN eng Multidisciplinary Digital Publishing Institute https://dx.doi.org/10.3390/v12111204 https://creativecommons.org/licenses/by/4.0/ Viruses; Volume 12; Issue 11; Pages: 1204 permafrost thermokarst pond phage diversity seasonality uncultured viral genomes Text 2020 ftmdpi https://doi.org/10.3390/v12111204 2023-08-01T00:19:50Z Permafrost thaw lakes including thermokarst lakes and ponds are ubiquitous features of Subarctic and Arctic landscapes and are hotspots of microbial activity. Input of terrestrial organic matter into the planktonic microbial loop of these lakes may greatly amplify global greenhouse gas emissions. This microbial loop, dominated in the summer by aerobic microorganisms including phototrophs, is radically different in the winter, when metabolic processes shift to the anaerobic degradation of organic matter. Little is known about the viruses that infect these microbes, despite evidence that viruses can control microbial populations and influence biogeochemical cycling in other systems. Here, we present the results of a metagenomics-based study of viruses in the larger than 0.22 µm fraction across two seasons (summer and winter) in a permafrost thaw lake in Subarctic Canada. We uncovered 351 viral populations (vOTUs) in the surface waters of this lake, with diversity significantly greater during the summer. We also identified and characterized several phage genomes and prophages, which were mostly present in the summer. Finally, we compared the viral community of this waterbody to other habitats and found unexpected similarities with distant bog lakes in North America. Text Arctic permafrost Subarctic Thermokarst MDPI Open Access Publishing Arctic Canada Viruses 12 11 1204 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
permafrost thermokarst pond phage diversity seasonality uncultured viral genomes |
spellingShingle |
permafrost thermokarst pond phage diversity seasonality uncultured viral genomes Catherine Girard Valérie Langlois Adrien Vigneron Warwick F. Vincent Alexander I. Culley Seasonal Regime Shift in the Viral Communities of a Permafrost Thaw Lake |
topic_facet |
permafrost thermokarst pond phage diversity seasonality uncultured viral genomes |
description |
Permafrost thaw lakes including thermokarst lakes and ponds are ubiquitous features of Subarctic and Arctic landscapes and are hotspots of microbial activity. Input of terrestrial organic matter into the planktonic microbial loop of these lakes may greatly amplify global greenhouse gas emissions. This microbial loop, dominated in the summer by aerobic microorganisms including phototrophs, is radically different in the winter, when metabolic processes shift to the anaerobic degradation of organic matter. Little is known about the viruses that infect these microbes, despite evidence that viruses can control microbial populations and influence biogeochemical cycling in other systems. Here, we present the results of a metagenomics-based study of viruses in the larger than 0.22 µm fraction across two seasons (summer and winter) in a permafrost thaw lake in Subarctic Canada. We uncovered 351 viral populations (vOTUs) in the surface waters of this lake, with diversity significantly greater during the summer. We also identified and characterized several phage genomes and prophages, which were mostly present in the summer. Finally, we compared the viral community of this waterbody to other habitats and found unexpected similarities with distant bog lakes in North America. |
format |
Text |
author |
Catherine Girard Valérie Langlois Adrien Vigneron Warwick F. Vincent Alexander I. Culley |
author_facet |
Catherine Girard Valérie Langlois Adrien Vigneron Warwick F. Vincent Alexander I. Culley |
author_sort |
Catherine Girard |
title |
Seasonal Regime Shift in the Viral Communities of a Permafrost Thaw Lake |
title_short |
Seasonal Regime Shift in the Viral Communities of a Permafrost Thaw Lake |
title_full |
Seasonal Regime Shift in the Viral Communities of a Permafrost Thaw Lake |
title_fullStr |
Seasonal Regime Shift in the Viral Communities of a Permafrost Thaw Lake |
title_full_unstemmed |
Seasonal Regime Shift in the Viral Communities of a Permafrost Thaw Lake |
title_sort |
seasonal regime shift in the viral communities of a permafrost thaw lake |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2020 |
url |
https://doi.org/10.3390/v12111204 |
op_coverage |
agris |
geographic |
Arctic Canada |
geographic_facet |
Arctic Canada |
genre |
Arctic permafrost Subarctic Thermokarst |
genre_facet |
Arctic permafrost Subarctic Thermokarst |
op_source |
Viruses; Volume 12; Issue 11; Pages: 1204 |
op_relation |
https://dx.doi.org/10.3390/v12111204 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/v12111204 |
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Viruses |
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12 |
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11 |
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1204 |
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