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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2020
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Online Access: | https://doi.org/10.3390/v12111204 https://doaj.org/article/f970ccb3c7394d0e8fb4da2a952657a6 |
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ftdoajarticles:oai:doaj.org/article:f970ccb3c7394d0e8fb4da2a952657a6 2023-05-15T15:06:32+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 2020-10-01T00:00:00Z https://doi.org/10.3390/v12111204 https://doaj.org/article/f970ccb3c7394d0e8fb4da2a952657a6 EN eng MDPI AG https://www.mdpi.com/1999-4915/12/11/1204 https://doaj.org/toc/1999-4915 doi:10.3390/v12111204 1999-4915 https://doaj.org/article/f970ccb3c7394d0e8fb4da2a952657a6 Viruses, Vol 12, Iss 1204, p 1204 (2020) permafrost thermokarst pond phage diversity seasonality uncultured viral genomes Microbiology QR1-502 article 2020 ftdoajarticles https://doi.org/10.3390/v12111204 2022-12-31T02:32:15Z 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. Article in Journal/Newspaper Arctic permafrost Subarctic Thermokarst Directory of Open Access Journals: DOAJ Articles Arctic Canada Viruses 12 11 1204 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
permafrost thermokarst pond phage diversity seasonality uncultured viral genomes Microbiology QR1-502 |
spellingShingle |
permafrost thermokarst pond phage diversity seasonality uncultured viral genomes Microbiology QR1-502 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 Microbiology QR1-502 |
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 |
Article in Journal/Newspaper |
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 |
MDPI AG |
publishDate |
2020 |
url |
https://doi.org/10.3390/v12111204 https://doaj.org/article/f970ccb3c7394d0e8fb4da2a952657a6 |
geographic |
Arctic Canada |
geographic_facet |
Arctic Canada |
genre |
Arctic permafrost Subarctic Thermokarst |
genre_facet |
Arctic permafrost Subarctic Thermokarst |
op_source |
Viruses, Vol 12, Iss 1204, p 1204 (2020) |
op_relation |
https://www.mdpi.com/1999-4915/12/11/1204 https://doaj.org/toc/1999-4915 doi:10.3390/v12111204 1999-4915 https://doaj.org/article/f970ccb3c7394d0e8fb4da2a952657a6 |
op_doi |
https://doi.org/10.3390/v12111204 |
container_title |
Viruses |
container_volume |
12 |
container_issue |
11 |
container_start_page |
1204 |
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1766338120307965952 |