Ecogenomics and Adaptation Strategies of Southern Ocean Viral Communities.

ABSTRACT: The Southern Ocean (SO) represents up to one-fifth of the total carbon drawdown worldwide. Intense selective pressures (low temperature, high UV radiation, and strong seasonality) and physical isolation characterize the SO, serving as a "natural" laboratory for the study of ecogenomics and unique adaptations of endemic viral populations. Here, we report 2,416 novel viral genomes from the SO, obtained from newly sequenced viral metagenomes in combination with mining of publicly available data sets, which represents a 25% increase in the SO viral genomes reported to date. They comprised 567 viral clusters (defined as approximately genus-level groups), with 186 genera endemic to the SO, demonstrating that the SO viral community is predominantly constituted by a large pool of genetically diver

SUBMITTER: Alarcon-Schumacher T 

PROVIDER: S-EPMC8407431 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature