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Open AccessArticle

Metagenomic Analysis of Virioplankton from the Pelagic Zone of Lake Baikal

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Limnological Institute Siberian Branch of the Russian Academy of Sciences, Irkutsk, Ulan-Batorskaya 3, 664033, Russia
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Chemical Biology and Fundamental Medicine Siberian Branch of the Russian Academy of Sciences, Lavrentiev Avenue 8, Novosibirsk 630090, Russia
*
Author to whom correspondence should be addressed.
Viruses 2019, 11(11), 991; https://doi.org/10.3390/v11110991
Received: 24 August 2019 / Revised: 18 October 2019 / Accepted: 27 October 2019 / Published: 29 October 2019
(This article belongs to the Section Bacterial Viruses)
This study describes two viral communities from the world’s oldest lake, Lake Baikal. For the analysis, we chose under-ice and late spring periods of the year as the most productive for Lake Baikal. These periods show the maximum seasonal biomass of phytoplankton and bacterioplankton, which are targets for viruses, including bacteriophages. At that time, the main group of viruses were tailed bacteriophages of the order Caudovirales that belong to the families Myoviridae, Siphoviridae and Podoviridae. Annotation of functional genes revealed that during the under-ice period, the “Phages, Prophages, Transposable Elements and Plasmids” (27.4%) category represented the bulk of the virome. In the late spring period, it comprised 9.6% of the virome. We assembled contigs by two methods: Separately assembled in each virome or cross-assembled. A comparative analysis of the Baikal viromes with other aquatic environments indicated a distribution pattern by soil, marine and freshwater groups. Viromes of lakes Baikal, Michigan, Erie and Ontario form the joint World’s Largest Lakes clade. View Full-Text
Keywords: virome; Lake Baikal; freshwater; viral ecology virome; Lake Baikal; freshwater; viral ecology
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Potapov, S.A.; Tikhonova, I.V.; Krasnopeev, A.Y.; Kabilov, M.R.; Tupikin, A.E.; Chebunina, N.S.; Zhuchenko, N.A.; Belykh, O.I. Metagenomic Analysis of Virioplankton from the Pelagic Zone of Lake Baikal. Viruses 2019, 11, 991.

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