ArticleProceedings of the National Academy of Sciences of the United States of America2014
Iron oxides stimulate sulfate-driven anaerobic methane oxidation in seeps.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.
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Who cites it
19 citing papers in PubMed, 141 citations in OpenAlex.
- Metal-driven anaerobic oxidation of methane and the Sturtian deglaciation.Nature communications · 2025Article
- Sulfide Toxicity as Key Control on Anaerobic Oxidation of Methane in Eutrophic Coastal Sediments.Environmental science & technology · 2024Article
- Sulfur cycling likely obscures dynamic biologically-driven iron redox cycling in contemporary methane seep environments.Environmental microbiology reports · 2024Article
- Tracing the Century-Long Evolution of Microplastics Deposition in a Cold Seep.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2023Article
- Aerobic methanotrophy increases the net iron reduction in methanogenic lake sediments.Frontiers in microbiology · 2023Article
- A Reduced FJournal of bacteriology · 2022Article
- A Genome-Scale Metabolic Model ofMetabolites · 2022Article
- Diversity of Anaerobic Methane Oxidizers in the Cold Seep Sediments of the Okinawa Trough.Frontiers in microbiology · 2022Article
- Editorial: Advances in Microbial Iron Cycling.Frontiers in microbiology · 2022Article
- Methanogen Productivity and Microbial Community Composition Varies With Iron Oxide Mineralogy.Frontiers in microbiology · 2021Article
- Genomic Insights Into theFrontiers in microbiology · 2021Article
- High-Throughput Sequencing Reveals a Potentially NovelMicroorganisms · 2020Article
- Niche Differentiation of Sulfate- and Iron-Dependent Anaerobic Methane Oxidation and Methylotrophic Methanogenesis in Deep Sea Methane Seeps.Frontiers in microbiology · 2020Article
- A Review of Landfill Microbiology and Ecology: A Call for Modernization With 'Next Generation' Technology.Frontiers in microbiology · 2020Review
- A methanotrophic archaeon couples anaerobic oxidation of methane to Fe(III) reduction.The ISME journal · 2018Article
- A Critical Look at the Combined Use of Sulfur and Oxygen Isotopes to Study Microbial Metabolisms in Methane-Rich Environments.Frontiers in microbiology · 2018Article
- Shifting microbial communities sustain multiyear iron reduction and methanogenesis in ferruginous sediment incubations.Geobiology · 2017Article
- Co-existence of Methanogenesis and Sulfate Reduction with Common Substrates in Sulfate-Rich Estuarine Sediments.Frontiers in microbiology · 2017Article
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Authors and funding
5 authors at 3 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Seep sediments are dominated by intensive microbial sulfate reduction coupled to the anaerobic oxidation of methane (AOM). Through geochemical measurements of incubation experiments with methane seep sediments collected from Hydrate Ridge, we provide insight into the role of iron oxides in sulfate-driven AOM. Seep sediments incubated with (13)C-labeled methane showed co-occurring sulfate reduction, AOM, and methanogenesis. The isotope fractionation factors for sulfur and oxygen isotopes in sulfate were about 40‰ and 22‰, respectively, reinforcing the difference between microbial sulfate reduction in methane seeps versus other sedimentary environments (for example, sulfur isotope fractionation above 60‰ in sulfate reduction coupled to organic carbon oxidation or in diffusive sedimentary sulfate-methane transition zone). The addition of hematite to these microcosm experiments resulted in significant microbial iron reduction as well as enhancing sulfate-driven AOM. The magnitude of the isotope fractionation of sulfur and oxygen isotopes in sulfate from these incubations was lowered by about 50%, indicating the involvement of iron oxides during sulfate reduction in methane seeps. The similar relative change between the oxygen versus sulfur isotopes of sulfate in all experiments (with and without hematite addition) suggests that oxidized forms of iron, naturally present in the sediment incubations, were involved in sulfate reduction, with hematite addition increasing the sulfate recycling or the activity of sulfur-cycling microorganisms by about 40%. These results highlight a role for natural iron oxides during bacterial sulfate reduction in methane seeps not only as nutrient but also as stimulator of sulfur recycling.
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