ArticleFEMS microbiology ecology2020
Exploring the abundance, metabolic potential and gene expression of subseafloor Chloroflexi in million-year-old oxic and anoxic abyssal clay.
Article in FEMS microbiology ecology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.
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Who cites it
26 citing papers in PubMed, 69 citations in OpenAlex.
- Long vs. short read sequencing for microbial ecology of sedimentary environments: a case study from Lake Arnon, Switzerland.FEMS microbiology letters · 2026Article
- Sedimentary hiatus causes abrupt decline and shifts in marine subsurface sediment microbial communities: a study from IODP Exp. 378 Site U1553 offshore southern New Zealand.FEMS microbiology letters · 2026Article
- Widespread deep-sea microorganisms in subseafloor geochemical cycling.Frontiers in microbiology · 2026Article
- Microbial and Geochemical Variability in Sediments and Biofilms from Italian Gypsum Caves.Microbial ecology · 2025Article
- Evidence of microbial reductive dehalogenation in deep-sea cold seeps and its implications for biogeochemical cycles.Microbiome · 2025Article
- The Deep Subsurface Biosphere and its Substrates Along a One-Million-Year Ferruginous Lake Archive.Microbial ecology · 2025Article
- Differential Expression of Core Metabolic Functions in Candidatus Altiarchaeum Inhabiting Distinct Subsurface Ecosystems.Environmental microbiology reports · 2025Article
- Geochemical variability and microbial metabolic functions in oligotrophic sediments exposed to minor seepage.Frontiers in microbiology · 2025Review
- Taxonomic and functional partitioning of Chloroflexota populations under ferruginous conditions at and below the sediment-water interface.FEMS microbiology ecology · 2024Article
- The biotechnological potential of theApplied and environmental microbiology · 2024Review
- A unique subseafloor microbiosphere in the Mariana Trench driven by episodic sedimentation.Marine life science & technology · 2024Article
- Depth-Dependent Distribution of Prokaryotes in Sediments of the Manganese Crust on Nazimov Guyots of the Magellan Seamounts.Microbial ecology · 2023Article
- Microbial Communities in Ferromanganese Sediments from the Northern Basin of Lake Baikal (Russia).Microorganisms · 2023Article
- Thermophilic Dehalococcoidia with unusual traits shed light on an unexpected past.The ISME journal · 2023Article
- Surface-layer protein is a public-good matrix exopolymer for microbial community organisation in environmental anammox biofilms.The ISME journal · 2023Article
- Mapping the microbial diversity associated with different geochemical regimes in the shallow-water hydrothermal vents of the Aeolian archipelago, Italy.Frontiers in microbiology · 2023Article
- Nitrogen cycling activities during decreased stratification in the coastal oxygen minimum zone off Namibia.Frontiers in microbiology · 2023Article
- Microbial Activities and Selection from Surface Ocean to Subseafloor on the Namibian Continental Shelf.Applied and environmental microbiology · 2022Article
- Novel Chloroflexi genomes from the deepest ocean reveal metabolic strategies for the adaptation to deep-sea habitats.Microbiome · 2022Article
- Mapping Microbial Abundance and Prevalence to Changing Oxygen Concentration in Deep-Sea Sediments Using Machine Learning and Differential Abundance.Frontiers in microbiology · 2022Article
Corrections and comments
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Authors and funding
4 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Chloroflexi are widespread in subsurface environments, and recent studies indicate that they represent a major fraction of the communities in subseafloor sediment. Here, we compare the abundance, diversity, metabolic potential and gene expression of Chloroflexi from three abyssal sediment cores from the western North Atlantic Gyre (water depth >5400 m) covering up to 15 million years of sediment deposition, where Chloroflexi were found to represent major components of the community at all sites. Chloroflexi communities die off in oxic red clay over 10-15 million years, and gene expression was below detection. In contrast, Chloroflexi abundance and gene expression at the anoxic abyssal clay site increase below the seafloor and peak in 2-3 million-year-old sediment, indicating a comparably higher activity. Metatranscriptomes from the anoxic site reveal increased expression of Chloroflexi genes involved in cell wall biogenesis, protein turnover, inorganic ion transport, defense mechanisms and prophages. Phylogenetic analysis shows that these Chloroflexi are closely related to homoacetogenic subseafloor clades and actively transcribe genes involved in sugar fermentations, gluconeogenesis and Wood-Ljungdahl pathway in the subseafloor. Concomitant expression of cell division genes indicates that these putative homoacetogenic Chloroflexi are actively growing in these million-year-old anoxic abyssal sediments.
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