A Tale of Two Seasons: Distinct Seasonal Viral Communities in a Thermokarst Lake
Thermokarst lakes are important features of subarctic landscapes and are a substantial source of greenhouse gases, although the extent of gas produced varies seasonally. Microbial communities are responsible for the production of methane and CO 2 but the “top down” forces that influence microbial dy...
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ftdoajarticles:oai:doaj.org/article:f2de130b9049474e90f673be9aa970c8 2023-05-15T17:57:23+02:00 A Tale of Two Seasons: Distinct Seasonal Viral Communities in a Thermokarst Lake Valérie Langlois Catherine Girard Warwick F. Vincent Alexander I. Culley 2023-02-01T00:00:00Z https://doi.org/10.3390/microorganisms11020428 https://doaj.org/article/f2de130b9049474e90f673be9aa970c8 EN eng MDPI AG https://www.mdpi.com/2076-2607/11/2/428 https://doaj.org/toc/2076-2607 doi:10.3390/microorganisms11020428 2076-2607 https://doaj.org/article/f2de130b9049474e90f673be9aa970c8 Microorganisms, Vol 11, Iss 428, p 428 (2023) viral ecology thermokarst lake metagenomics subarctic Biology (General) QH301-705.5 article 2023 ftdoajarticles https://doi.org/10.3390/microorganisms11020428 2023-02-26T01:29:09Z Thermokarst lakes are important features of subarctic landscapes and are a substantial source of greenhouse gases, although the extent of gas produced varies seasonally. Microbial communities are responsible for the production of methane and CO 2 but the “top down” forces that influence microbial dynamics (i.e., grazers and viruses) and how they vary temporally within these lakes are still poorly understood. The aim of this study was to examine viral diversity over time to elucidate the seasonal structure of the viral communities in thermokarst lakes. We produced virus-enriched metagenomes from a subarctic peatland thermokarst lake in the summer and winter over three years. The vast majority of vOTUs assigned to viral families belonged to Caudovirales (Caudoviricetes), notably the morphological groups myovirus, siphovirus and podovirus. We identified two distinct communities: a dynamic, seasonal community in the oxygenated surface layer during the summer and a stable community found in the anoxic water layer at the bottom of the lake in summer and throughout much of the water column in winter. Comparison with other permafrost and northern lake metagenomes highlighted the distinct composition of viral communities in this permafrost thaw lake ecosystem. Article in Journal/Newspaper permafrost Subarctic Thermokarst Directory of Open Access Journals: DOAJ Articles Microorganisms 11 2 428 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
viral ecology thermokarst lake metagenomics subarctic Biology (General) QH301-705.5 |
spellingShingle |
viral ecology thermokarst lake metagenomics subarctic Biology (General) QH301-705.5 Valérie Langlois Catherine Girard Warwick F. Vincent Alexander I. Culley A Tale of Two Seasons: Distinct Seasonal Viral Communities in a Thermokarst Lake |
topic_facet |
viral ecology thermokarst lake metagenomics subarctic Biology (General) QH301-705.5 |
description |
Thermokarst lakes are important features of subarctic landscapes and are a substantial source of greenhouse gases, although the extent of gas produced varies seasonally. Microbial communities are responsible for the production of methane and CO 2 but the “top down” forces that influence microbial dynamics (i.e., grazers and viruses) and how they vary temporally within these lakes are still poorly understood. The aim of this study was to examine viral diversity over time to elucidate the seasonal structure of the viral communities in thermokarst lakes. We produced virus-enriched metagenomes from a subarctic peatland thermokarst lake in the summer and winter over three years. The vast majority of vOTUs assigned to viral families belonged to Caudovirales (Caudoviricetes), notably the morphological groups myovirus, siphovirus and podovirus. We identified two distinct communities: a dynamic, seasonal community in the oxygenated surface layer during the summer and a stable community found in the anoxic water layer at the bottom of the lake in summer and throughout much of the water column in winter. Comparison with other permafrost and northern lake metagenomes highlighted the distinct composition of viral communities in this permafrost thaw lake ecosystem. |
format |
Article in Journal/Newspaper |
author |
Valérie Langlois Catherine Girard Warwick F. Vincent Alexander I. Culley |
author_facet |
Valérie Langlois Catherine Girard Warwick F. Vincent Alexander I. Culley |
author_sort |
Valérie Langlois |
title |
A Tale of Two Seasons: Distinct Seasonal Viral Communities in a Thermokarst Lake |
title_short |
A Tale of Two Seasons: Distinct Seasonal Viral Communities in a Thermokarst Lake |
title_full |
A Tale of Two Seasons: Distinct Seasonal Viral Communities in a Thermokarst Lake |
title_fullStr |
A Tale of Two Seasons: Distinct Seasonal Viral Communities in a Thermokarst Lake |
title_full_unstemmed |
A Tale of Two Seasons: Distinct Seasonal Viral Communities in a Thermokarst Lake |
title_sort |
tale of two seasons: distinct seasonal viral communities in a thermokarst lake |
publisher |
MDPI AG |
publishDate |
2023 |
url |
https://doi.org/10.3390/microorganisms11020428 https://doaj.org/article/f2de130b9049474e90f673be9aa970c8 |
genre |
permafrost Subarctic Thermokarst |
genre_facet |
permafrost Subarctic Thermokarst |
op_source |
Microorganisms, Vol 11, Iss 428, p 428 (2023) |
op_relation |
https://www.mdpi.com/2076-2607/11/2/428 https://doaj.org/toc/2076-2607 doi:10.3390/microorganisms11020428 2076-2607 https://doaj.org/article/f2de130b9049474e90f673be9aa970c8 |
op_doi |
https://doi.org/10.3390/microorganisms11020428 |
container_title |
Microorganisms |
container_volume |
11 |
container_issue |
2 |
container_start_page |
428 |
_version_ |
1766165793875165184 |