Extended Evaluation of Viral Diversity in Lake Baikal through Metagenomics

Lake Baikal is a unique oligotrophic freshwater lake with unusually cold conditions and amazing biological diversity. Studies of the lake's viral communities have begun recently, and their full diversity is not elucidated yet. Here, we performed DNA viral metagenomic analysis on integral sample...

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Bibliographic Details
Published in:Microorganisms (Basel) 2021-04, Vol.9 (4), p.760
Main Authors: Butina, Tatyana V, Bukin, Yurij S, Petrushin, Ivan S, Tupikin, Alexey E, Kabilov, Marsel R, Belikov, Sergey I
Format: Article
Language:English
Subjects:
Anthropogenic factors
Aquatic ecosystems
Basins
Biodiversity
Comparative analysis
Deep water
Environmental conditions
Freshwater lakes
freshwater viromes
Genomes
Global climate
Human influences
Lake Baikal
lake ecosystems
Lakes
Membrane filters
metagenomic analysis
Metagenomics
viral diversity
Viruses
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Summary:Lake Baikal is a unique oligotrophic freshwater lake with unusually cold conditions and amazing biological diversity. Studies of the lake's viral communities have begun recently, and their full diversity is not elucidated yet. Here, we performed DNA viral metagenomic analysis on integral samples from four different deep-water and shallow stations of the southern and central basins of the lake. There was a strict distinction of viral communities in areas with different environmental conditions. Comparative analysis with other freshwater lakes revealed the highest similarity of Baikal viromes with those of the Asian lakes Soyang and Biwa. Analysis of new data, together with previously published data allowed us to get a deeper insight into the diversity and functional potential of Baikal viruses; however, the true diversity of Baikal viruses in the lake ecosystem remains still unknown. The new metaviromic data will be useful for future studies of viral composition, distribution, and the dynamics associated with global climatic and anthropogenic impacts on this ecosystem.
ISSN:2076-2607
2076-2607
DOI:10.3390/microorganisms9040760