ArticleThe ISME journal2021
Mechanisms driving genome reduction of a novel Roseobacter lineage.
Article in The ISME journal, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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13 citing papers in PubMed.
- Polysaccharide Utilization and Adhesion Enable the Genome-StreamlinedMicroorganisms · 2026Article
- Ecogenomics and functional biogeography of the Roseobacter group in the global oceans based on 653 MAGs and SAGs.Microbiome · 2025Article
- Novel roseophages provide insights into a genetically and ecologically diverse phage family.Microbial genomics · 2025Article
- Methionine synthesis and glycine betaine demethylation are intricately intertwined in cosmopolitan marine bacteria.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- New isolates refine the ecophysiology of the Roseobacter CHAB-I-5 lineage.ISME communications · 2025Article
- Novel phage infecting themSphere · 2024Article
- Genome sequences of the firstMicrobial genomics · 2024Article
- Taxonomic and carbon metabolic diversification of Bathyarchaeia during its coevolution history with early Earth surface environment.Science advances · 2023Article
- Ecological divergence of syntopic marine bacterial species is shaped by gene content and expression.The ISME journal · 2023Article
- Abiotic selection of microbial genome size in the global ocean.Nature communications · 2023Article
- Article
- Assessing a Role of Genetic Drift for Deep-Time Evolutionary Events.Methods in molecular biology (Clifton, N.J.) · 2022Article
- The Influence of Genes on the "Killer Plasmid" ofFrontiers in microbiology · 2021Article
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Authors and funding
10 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Members of the marine Roseobacter group are key players in the global carbon and sulfur cycles. While over 300 species have been described, only 2% possess reduced genomes (mostly 3-3.5 Mbp) compared to an average roseobacter (>4 Mbp). These taxonomic minorities are phylogenetically diverse but form a Pelagic Roseobacter Cluster (PRC) at the genome content level. Here, we cultivated eight isolates constituting a novel Roseobacter lineage which we named 'CHUG'. Metagenomic and metatranscriptomic read recruitment analyses showed that CHUG members are globally distributed and active in marine pelagic environments. CHUG members possess some of the smallest genomes (~2.6 Mb) among all known roseobacters, but they do not exhibit canonical features of typical bacterioplankton lineages theorized to have undergone genome streamlining processes, like higher coding density, fewer paralogues and rarer pseudogenes. While CHUG members form a genome content cluster with traditional PRC members, they show important differences. Unlike other PRC members, neither the relative abundances of CHUG members nor their relative gene expression levels are correlated with chlorophyll a concentration across the global samples. CHUG members cannot utilize most phytoplankton-derived metabolites or synthesize vitamin B
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