ArticleApplied and environmental microbiology2012
Effects of iron and nitrogen limitation on sulfur isotope fractionation during microbial sulfate reduction.
Article in Applied and environmental microbiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
15 citing papers in PubMed, 57 citations in OpenAlex.
- Molecular insights into the dynamic relationship between respiration rate and sulfur isotope effect.Applied and environmental microbiology · 2025Article
- Invasion mechanism of Spartina alterniflora by regulating soil sulfur and iron cycling and microbial composition in the Jiuduansha Wetland.Environmental science and pollution research international · 2024Article
- What Controls the Sulfur Isotope Fractionation during Dissimilatory Sulfate Reduction?ACS environmental Au · 2023Review
- Straw Mulching and Nitrogen Fertilization Affect Diazotroph Communities in Wheat Rhizosphere.Frontiers in microbiology · 2021Article
- The Biogeochemical Sulfur Cycle of Marine Sediments.Frontiers in microbiology · 2019Review
- Electron carriers in microbial sulfate reduction inferred from experimental and environmental sulfur isotope fractionations.The ISME journal · 2018Article
- Article
- Influence of Phosphorus and Cell Geometry on the Fractionation of Sulfur Isotopes by Several Species ofFrontiers in microbiology · 2017Article
- System-Wide Adaptations of Desulfovibrio alaskensis G20 to Phosphate-Limited Conditions.PloS one · 2016Article
- Sulfur isotope fractionation during the evolutionary adaptation of a sulfate-reducing bacterium.Applied and environmental microbiology · 2015Article
- Sulfur Isotope Effects of Dissimilatory Sulfite Reductase.Frontiers in microbiology · 2015Article
- Intracellular metabolite levels shape sulfur isotope fractionation during microbial sulfate respiration.Proceedings of the National Academy of Sciences of the United States of America · 2014Article
- Iron oxides stimulate sulfate-driven anaerobic methane oxidation in seeps.Proceedings of the National Academy of Sciences of the United States of America · 2014Article
- Multiple sulfur isotope signatures of sulfite and thiosulfate reduction by the model dissimilatory sulfate-reducer, Desulfovibrio alaskensis str. G20.Frontiers in microbiology · 2014Article
- Fractionation of sulfur isotopes by Desulfovibrio vulgaris mutants lacking hydrogenases or type I tetraheme cytochrome c 3.Frontiers in microbiology · 2013Article
Corrections and comments
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Sulfate-reducing microbes utilize sulfate as an electron acceptor and produce sulfide that is depleted in heavy isotopes of sulfur relative to sulfate. Thus, the distribution of sulfur isotopes in sediments can trace microbial sulfate reduction (MSR), and it also has the potential to reflect the physiology of sulfate-reducing microbes. This study investigates the relationship between the availability of iron and reduced nitrogen and the magnitude of S-isotope fractionation during MSR by a marine sulfate-reducing bacterium, DMSS-1, a Desulfovibrio species, isolated from salt marsh in Cape Cod, MA. Submicromolar levels of iron increase sulfur isotope fractionation by about 50% relative to iron-replete cultures of DMSS-1. Iron-limited cultures also exhibit decreased cytochrome c-to-total protein ratios and cell-specific sulfate reduction rates (csSRR), implying changes in the electron transport chain that couples carbon and sulfur metabolisms. When DMSS-1 fixes nitrogen in ammonium-deficient medium, it also produces larger fractionation, but it occurs at faster csSRRs than in the ammonium-replete control cultures. The energy and reducing power required for nitrogen fixation may be responsible for the reverse trend between S-isotope fractionation and csSRR in this case. Iron deficiency and nitrogen fixation by sulfate-reducing microbes may lead to the large observed S-isotope effects in some euxinic basins and various anoxic sediments.
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