New clusters of arsenite oxidase and unusual bacterial groups in enrichments from arsenic-contaminated soil

Archives of Microbiology
Munawar SultanaMichael Schlömann

Abstract

In the present study cultivation-dependent and molecular methods were applied in combination to investigate the arsenite-oxidizing communities in enrichment cultures from arsenic and lead smelter-impacted soils with respect to both 16S rRNA and arsenite oxidase gene diversity. Enrichments with arsenite as the only electron donor resulted in completely different communities than enrichments with yeast extract and the simultaneous presence of arsenite. The lithoautotrophic community appeared to be dominated by Ferrimicrobium-related Actinobacteria, unusual Acidobacteria, Myxobacteria, and α-Proteobacteria but the heterotrophic community comprised many Dokdonella-related γ-Proteobacteria. Gene sequences of clones encoding arsenite oxidase from the enrichment for lithoautotrophs belonged to three major clusters with sequences from non-cultivated microorganisms. So, primers used to detect arsenite oxidase genes could amplify the genes from many α-, β- and γ-Proteobacteria, but not from various strains of the other phyla present in the enrichment for lithotrophs. This was also observed for the isolates where arsenite oxidase genes from new proteobacterial isolates of the genera Burkholderia, Bosea, Alcaligenes, Bradyrhizobium and Met...Continue Reading

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Citations

Dec 3, 2013·Extremophiles : Life Under Extreme Conditions·Zhou JiangQinghai Guo
Feb 11, 2014·Journal of Bioscience and Bioengineering·Shigeki Yamamura, Seigo Amachi
Apr 17, 2014·Environmental Science and Pollution Research International·Charlotte C ShagolTongmin Sa
Feb 28, 2015·Environmental Science and Pollution Research International·A CordiP Bauda
Sep 18, 2012·Biochimica Et Biophysica Acta·Robert van LisBarbara Schoepp-Cothenet
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Jan 29, 2014·Chemical Reviews·Russ HillePartha Basu
Apr 19, 2017·Ground Water·Munawar SultanaM Anwar Hossain
Mar 30, 2021·Journal, Genetic Engineering & Biotechnology·Siddhartha Pal, Kriti Sengupta
Mar 29, 2020·Environmental Science & Technology·Xiaoxu SunWeimin Sun
Aug 14, 2020·Environmental Science & Technology·Xiaoxu SunWeimin Sun
Dec 4, 2021·Environmental Science and Pollution Research International·Philippe N BertinMichel Mench

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