ArticleFEMS microbiology ecology2009
Molecular characterization and in situ quantification of anoxic arsenite-oxidizing denitrifying enrichment cultures.
Article in FEMS microbiology ecology, 2009. 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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Who cites it
15 citing papers in PubMed, 54 citations in OpenAlex.
- Review
- Ample Arsenite Bio-Oxidation Activity in Bangladesh Drinking Water Wells: A Bonanza for Bioremediation?Microorganisms · 2019Article
- ArxA FromFrontiers in microbiology · 2019Article
- Linking Genes to Microbial Biogeochemical Cycling: Lessons from Arsenic.Environmental science & technology · 2017Article
- Molecular phylogenetic analysis of dominant microbial populations in aged refuse.World journal of microbiology & biotechnology · 2014Article
- Evaluation of granular anaerobic ammonium oxidation process for the disposal of pre-treated swine manure.PeerJ · 2014Article
- Arsenic-transforming microbes and their role in biomining processes.Environmental science and pollution research international · 2013Review
- 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
- The role of denitrification on arsenite oxidation and arsenic mobility in an anoxic sediment column model with activated alumina.Biotechnology and bioengineering · 2010Article
- Anaerobic oxidation of arsenite linked to chlorate reduction.Applied and environmental microbiology · 2010Article
- Arsenite oxidase from Ralstonia sp. 22: characterization of the enzyme and its interaction with soluble cytochromes.The Journal of biological chemistry · 2010Article
- Anoxic oxidation of arsenite linked to chemolithotrophic denitrification in continuous bioreactors.Biotechnology and bioengineering · 2010Article
- Arsenite and ferrous iron oxidation linked to chemolithotrophic denitrification for the immobilization of arsenic in anoxic environments.Environmental science & technology · 2009Article
Corrections and comments
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Authors and funding
8 authors at 2 institutions in 2 countries.
Funding
Abstract
To explore the bacteria involved in the oxidation of arsenite (As(III)) under denitrifying conditions, three enrichment cultures (ECs) and one mixed culture (MC) were characterized that originated from anaerobic environmental samples. The oxidation of As(III) (0.5 mM) was dependent on NO(3) (-) addition and N(2) formation was dependent on As(III) addition. The ratio of N(2)-N formed to As(III) fed approximated the expected stoichiometry of 2.5. A 16S rRNA gene clone library analysis revealed three predominant phylotypes. The first, related to the genus Azoarcus from the division Betaproteobacteria, was found in the three ECs. The other two predominant phylotypes were closely related to the genera Acidovorax and Diaphorobacter within the Comamonadaceae family of Betaproteobacteria, and one of these was present in all of the cultures examined. FISH confirmed that Azoarcus accounted for a large fraction of bacteria present in the ECs. The Azoarcus clones had 96% sequence homology with Azoarcus sp. strain DAO1, an isolate previously reported to oxidize As(III) with nitrate. FISH analysis also confirmed that Comamonadaceae were present in all cultures. Pure cultures of Azoarcus and Diaphorobacter were isolated and shown to be responsible for nitrate-dependent As(III) oxidation. These results, taken as a whole, suggest that bacteria within the genus Azoarcus and the family Comamonadaceae are involved in the observed anoxic oxidation of As(III).
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