Diversity and Distribution of a Prevalent Microviridae Group Across the Global Oceans

Overview

Journal Commun Biol

Specialty Biology

Date 2024 Oct 24

PMID 39443614

Authors

Ying Wu

Zuqing Wu

Luyuan Guo

Jiabing Shao

Hang Xiao

Mingyu Yang

Chunmei Deng

Yahui Zhang

Zefeng Zhang

Yanlin Zhao

Affiliations

Soon will be listed here.

Abstract

Small single-stranded DNA phages of the Microviridae family are diverse and prevalent in oceans. Our understanding of Microviridae phages that infect the ecologically important marine Roseobacter is currently limited, comprising few isolates. Here, we report six roseophages that infect Roseobacter RCA strains. Genomic and phylogenetic analyses revealed that they were new members of the previously identified subfamily Occultatumvirinae. Additionally, 232 marine uncultivated virus genomes (UViGs) affiliated to Occultatumvirinae were obtained from environmental genome datasets. Phylogenomic analysis revealed that marine Occultatumvirinae phages could be further grouped into 11 subgroups. Moreover, meta-omics based read-mapping analysis showed that Occultatumvirinae phages were globally distributed, with two low G + C subgroups showing the most prevalent distribution. Furthermore, one phage in subgroup 2 was found to be extremely ubiquitous. Overall, this study expands our understanding of the diversity and ecology of the Occultatumvirinae microviruses in the ocean and highlights their ecological impacts.

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