ArticleApplied and environmental microbiology2010
Anaerobic oxidation of arsenite linked to chlorate reduction.
Article in Applied and environmental microbiology, 2010. 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, 74 citations in OpenAlex.
- Review
- Anoxygenic phototrophic arsenite oxidation by a Rhodobacter strain.Environmental microbiology · 2023Article
- Arsenic biotransformation and mobilization: the role of bacterial strains and other environmental variables.Environmental science and pollution research international · 2022Review
- Diversity and Metabolic Potentials of As(III)-Oxidizing Bacteria in Activated Sludge.Applied and environmental microbiology · 2021Article
- Ample Arsenite Bio-Oxidation Activity in Bangladesh Drinking Water Wells: A Bonanza for Bioremediation?Microorganisms · 2019Article
- Novel Metabolic Pathway forApplied and environmental microbiology · 2018Article
- Novel arsenic-transforming bacteria and the diversity of their arsenic-related genes and enzymes arising from arsenic-polluted freshwater sediment.Scientific reports · 2017Article
- Functions and Unique Diversity of Genes and Microorganisms Involved in Arsenite Oxidation from the Tailings of a Realgar Mine.Applied and environmental microbiology · 2016Article
- Increasing the Richness of Culturable Arsenic-Tolerant Bacteria from Theonella swinhoei by Addition of Sponge Skeleton to the Growth Medium.Microbial ecology · 2016Article
- Isolation and Characterization of Electrochemically Active Subsurface Delftia and Azonexus Species.Frontiers in microbiology · 2016Article
- Earth Abides Arsenic Biotransformations.Annual review of earth and planetary sciences · 2014Article
- Bacteria and genes involved in arsenic speciation in sediment impacted by long-term gold mining.PloS one · 2014Article
- Diversity of arsenite oxidizing bacterial communities in arsenic-rich deltaic aquifers in West Bengal, India.Frontiers in microbiology · 2014Article
- Methane oxidation linked to chlorite dismutation.Frontiers in microbiology · 2014Article
- Arsenic-transforming microbes and their role in biomining processes.Environmental science and pollution research international · 2013Review
- Organization and regulation of the arsenite oxidase operon of the moderately acidophilic and facultative chemoautotrophic Thiomonas arsenitoxydans.Extremophiles : life under extreme conditions · 2013Article
- Identification of antimony- and arsenic-oxidizing bacteria associated with antimony mine tailing.Microbes and environments · 2013Article
- Flexible bacterial strains that oxidize arsenite in anoxic or aerobic conditions and utilize hydrogen or acetate as alternative electron donors.Biodegradation · 2012Article
- Long term performance of an arsenite-oxidizing-chlorate-reducing microbial consortium in an upflow anaerobic sludge bed (UASB) bioreactor.Bioresource technology · 2011Article
Corrections and comments
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
Abstract
Microorganisms play a significant role in the speciation and mobility of arsenic in the environment. In this study, the oxidation of arsenite [As(III)] to arsenate [As(V)] linked to chlorate (ClO₃⁻) reduction was shown to be catalyzed by sludge samples, enrichment cultures (ECs), and pure cultures incubated under anaerobic conditions. No activity was observed in treatments lacking inoculum or with heat-killed sludge, or in controls lacking ClO₃⁻. The As(III) oxidation was linked to the complete reduction of ClO₃⁻ to Cl⁻, and the molar ratio of As(V) formed to ClO₃⁻ consumed approached the theoretical value of 3:1 assuming the e⁻ equivalents from As(III) were used to completely reduce ClO₃⁻. In keeping with O₂ as a putative intermediate of ClO₃⁻ reduction, the ECs could also oxidize As(III) to As(V) with O₂ at low concentrations. Low levels of organic carbon were essential in heterotrophic ECs but not in autotrophic ECs. 16S rRNA gene clone libraries indicated that the ECs were dominated by clones of Rhodocyclaceae (including Dechloromonas, Azospira, and Azonexus phylotypes) and Stenotrophomonas under autotrophic conditions. Additional phylotypes (Alicycliphilus, Agrobacterium, and Pseudoxanthomonas) were identified in heterotrophic ECs. Two isolated autotrophic pure cultures, Dechloromonas sp. strain ECC1-pb1 and Azospira sp. strain ECC1-pb2, were able to grow by linking the oxidation of As(III) to As(V) with the reduction of ClO₃⁻. The presence of the arsenite oxidase subunit A (aroA) gene was demonstrated with PCR in the ECs and pure cultures. This study demonstrates that ClO₃⁻ is an alternative electron acceptor to support the microbial oxidation of As(III).
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