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| Main Authors: | , , |
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| Format: | Artículo científico |
| Language: | en |
| Published: |
Microbiome
2025
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| Subjects: | |
| Online Access: | https://pubmed.ncbi.nlm.nih.gov/41310780/ |
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Table of Contents:
- Ecogenomics and functional biogeography of the Roseobacter group in the global oceans based on 653 MAGs and SAGs. Liu, Yanting Brinkhoff, Thorsten Simon, Meinhard Oceans and Seas Roseobacter Seawater Biodiversity Phylogeography Genome, Bacterial The Roseobacter group is a major component of prokaryotic communities in the global oceans. Information on this group is based predominantly on isolates and their genomic features and on the 16S rRNA gene. Assessments of prokaryotic communities in the pelagic of the global oceans indicated an unveiled diversity of this group but studies of the diversity and global biogeography of the entire group are still missing. Hence, we aimed at a comprehensive assessment of the Roseobacter group in the global oceans on the basis of MAGs and SAGs. The obtained 610 MAGs and 43 SAGs of high quality were subjected to in-depth analyses of their phylogeny, genomic and functional features. The recruitment locations range from the tropics to polar regions, include all major ocean basins. The phylogenetic analysis delineated the known RCA cluster and five pelagic clusters, two of which were completely novel: TCR (Temperate and Cold Roseobacter), AAPR (Arctic-Atlantic-Pacific Roseobacter, novel), AAR (Arctic-Atlantic Roseobacter, novel), COR (Central Oceanic Roseobacter), LUX (Cand. Luxescamonaceae) cluster. These clusters account for ~ 70% of all Roseobacter MAGs and SAGs in the epipelagic. The TCR, AAPR, AAR, and LUX clusters are among the most deeply branching lineages of the Roseobacter group. These clusters and several sublineages of the RCA and COR clusters exhibit distinct features of genome streamlining, i.e. genome sizes of Our comprehensive analyses shed new light on the diversification, genomic features, environmental adaptation, and global biogeography of a major lineage of pelagic bacteria. Video Abstract.