ArticleBMC genomics2025
Isolation and characterization of a roseophage representing a novel genus in the N4-like Rhodovirinae subfamily distributed in estuarine waters.
Article in BMC genomics, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed.
- Novel roseophages provide insights into a genetically and ecologically diverse phage family.Microbial genomics · 2025Article
- Combined metabolomic and genomic analyses reveal phage-specific and infection stage-specific alterations to marineISME communications · 2025Article
- Two novel phages infectingFrontiers in microbiology · 2025Article
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3 authors.
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Abstract
backgroundRoseobacteraceae, often referred to as the marine roseobacter clade (MRC), are pivotal constituents of bacterial communities in coastal and pelagic marine environments. During the past two decades, 75 roseophages that infect various Roseobacteraceae lineages have been isolated. The N4-like roseophage clade, which encompasses 15 members, represents the largest clade among these roseophages. N4-like phages form a monophyletic group, classified as family Schitoviridae. And all N4-like roseophages form a unique clade within Schitoviridae and has been classified as the Rhodovirinae subfamily.
resultsIn this study, we isolated a novel roseophage, vB_DshP-R7L, that infects Dinoroseobacter shibae DFL12 from Xiamen Bay in the East China Sea. Conserved genes of Schitoviridae have been identified in the genome of vB_DshP-R7L, and following phylogenetic analysis suggests that the newly isolated phage is a member of the Rhodovirinae subfamily and represents the sole member of a novel genus, Gonggongvirus. The genome of vB_DshP-R7L harbors six auxiliary metabolic genes (AMGs), most of which potentially enhance DNA de novo synthesis. Additionally, a gene encoding ribosomal protein was identified. Comparative genomic analysis of AMG content among Rhodovirinae indicates a distinct evolutionary history characterized by independent ancient horizontal gene transfer events. Read-mapping analysis reveals the prevalence of vB_DshP-R7L and other Rhodovirinae roseophages in estuarine waters.
conclusionsOur work illustrates the genomic features of a novel roseophage clade among the subfamily Rhodovirinae. The AMG content of vB_DshP-R7L is under severe purification selection, which reveals their possible ecological importance. We also demonstrated that vB_DshP-R7L and other Rhodovirinae roseophages are only detected in estuaries. Our isolation and characterization of this novel phage expands the understanding of the phylogeny, gene transfer history, and biogeography of Rhodovirinae infecting marine Roseobacteraceae.
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