ArticleThe ISME journal2018
The enigmatic SAR202 cluster up close: shedding light on a globally distributed dark ocean lineage involved in sulfur cycling.
Article in The ISME journal, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 60 papers.
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Who cites it
60 citing papers in PubMed, 150 citations in OpenAlex.
- The Prokaryotic Community of Hypersaline Soils from the Odiel Saltmarshes: Culturomics Versus Metagenomics.Life (Basel, Switzerland) · 2026Article
- Widespread deep-sea microorganisms in subseafloor geochemical cycling.Frontiers in microbiology · 2026Article
- Diversity and composition of sponge-associated microbiomes from Korean sponges revealed by full-length 16S rRNA analysis.Scientific reports · 2025Article
- Characterization of bacterial diversity associated with a Salar de Atacama native plant Nitrophila atacamensis.Environmental microbiome · 2025Article
- Genome-streamlined SAR202 bacteria are widely present and active in the euphotic ocean.The ISME journal · 2025Article
- Taxonomic and functional partitioning of Chloroflexota populations under ferruginous conditions at and below the sediment-water interface.FEMS microbiology ecology · 2024Article
- Deep metagenomic sequencing unveils novel SAR202 lineages and their vertical adaptation in the ocean.Communications biology · 2024Article
- Prokaryotic communities of the French Polynesian sponge Dactylospongia metachromia display a site-specific and stable diversity during an aquaculture trial.Antonie van Leeuwenhoek · 2024Article
- Deep-seamBio · 2024Article
- The Hypersaline Soils of the Odiel Saltmarshes Natural Area as a Source for Uncovering a New Taxon:Microorganisms · 2024Article
- Prediction of lung cancer using novel biomarkers based on microbiome profiling of bronchoalveolar lavage fluid.Scientific reports · 2024Article
- Bacterial chemolithoautotrophy in ultramafic plumes along the Mid-Atlantic Ridge.The ISME journal · 2024Article
- Metagenomic characterization of a novel non-ammonia-oxidizing Thaumarchaeota from hadal sediment.Microbiome · 2024Article
- A pilot study suggests the correspondence between SAR202 bacteria and dissolved organic matter in the late stage of a year-long microcosm incubation.Frontiers in microbiology · 2024Article
- Unveiling the microbial diversity across the northern Ninety East Ridge in the Indian Ocean.Frontiers in microbiology · 2024Article
- The diversification and potential function of microbiome in sediment-water interface of methane seeps in South China Sea.Frontiers in microbiology · 2024Article
- A comprehensive overview of the Chloroflexota community in wastewater treatment plants worldwide.mSystems · 2023Review
- Increased prokaryotic diversity in the Red Sea deep scattering layer.Environmental microbiome · 2023Article
- Magnetite Alters the Metabolic Interaction between Methanogens and Sulfate-Reducing Bacteria.Environmental science & technology · 2023Article
- Article
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Authors and funding
5 authors at 4 institutions in 4 countries.
Funding
Abstract
The dark ocean microbiota represents the unknown majority in the global ocean waters. The SAR202 cluster belonging to the phylum Chloroflexi was the first microbial lineage discovered to specifically inhabit the aphotic realm, where they are abundant and globally distributed. The absence of SAR202 cultured representatives is a significant bottleneck towards understanding their metabolic capacities and role in the marine environment. In this work, we use a combination of metagenome-assembled genomes from deep-sea datasets and publicly available single-cell genomes to construct a genomic perspective of SAR202 phylogeny, metabolism and biogeography. Our results suggest that SAR202 cluster members are medium sized, free-living cells with a heterotrophic lifestyle, broadly divided into two distinct clades. We present the first evidence of vertical stratification of these microbes along the meso- and bathypelagic ocean layers. Remarkably, two distinct species of SAR202 cluster are highly abundant in nearly all deep bathypelagic metagenomic datasets available so far. SAR202 members metabolize multiple organosulfur compounds, many appear to be sulfite-oxidizers and are predicted to play a major role in sulfur turnover in the dark water column. This concomitantly suggests an unsuspected availability of these nutrient sources to allow for the high abundance of these microbes in the deep sea.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.