ArticlePloS one2015
Diversity, metabolic properties and arsenic mobilization potential of indigenous bacteria in arsenic contaminated groundwater of West Bengal, India.
Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.
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22 citing papers in PubMed, 69 citations in OpenAlex.
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- Culture-dependent study of arsenic-reducing bacteria in deep aquatic sediments of Bengal Delta.Environmental science and pollution research international · 2021Article
- Exploring the diversity and hydrocarbon bioremediation potential of microbial community in the waste sludge of Duliajan oil field, Assam, India.Environmental science and pollution research international · 2021Article
- Unraveling the Underlying Heavy Metal Detoxification Mechanisms ofMicroorganisms · 2021Review
- Assessing the Diversity and Metabolic Potential of Psychrotolerant Arsenic-Metabolizing Microorganisms From a Subarctic Peatland Used for Treatment of Mining-Affected Waters by Culture-Dependent and -Independent Techniques.Frontiers in microbiology · 2021Article
- Groundwater Arsenic Distribution in India by Machine Learning Geospatial Modeling.International journal of environmental research and public health · 2020Article
- Molecular and taxonomic characterization of arsenic (As) transforming Bacillus sp. strain IIIJ3-1 isolated from As-contaminated groundwater of Brahmaputra river basin, India.BMC microbiology · 2020Article
- Microcosm based analysis of arsenic release potential of Bacillus sp. strain IIIJ3-1 under varying redox conditions.World journal of microbiology & biotechnology · 2020Article
- The Human Gut Microbiome's Influence on Arsenic Toxicity.Current pharmacology reports · 2019Article
- Arsenic mobilization in a high arsenic groundwater revealed by metagenomic and Geochip analyses.Scientific reports · 2019Article
- Characterization of siderophore producing arsenic-resistant Staphylococcus sp. strain TA6 isolated from contaminated groundwater of Jorhat, Assam and its possible role in arsenic geocycle.BMC microbiology · 2018Article
- Low-Abundance Members of theFrontiers in microbiology · 2018Article
- Exposure to Arsenic Alters the Microbiome of Larval Zebrafish.Frontiers in microbiology · 2018Article
- Article
- Phosphate-binding protein from Polaromonas JS666: purification, characterization, crystallization and sulfur SAD phasing.Acta crystallographica. Section F, Structural biology communications · 2017Article
- Hexavalent chromium bioreduction and chemical precipitation of sulphate as a treatment of site-specific fly ash leachates.World journal of microbiology & biotechnology · 2017Article
- Bacterial Community Structures in Freshwater Polar Environments of Svalbard.Microbes and environments · 2016Article
- Dissimilatory Arsenate Reduction and In Situ Microbial Activities and Diversity in Arsenic-rich Groundwater of Chianan Plain, Southwestern Taiwan.Microbial ecology · 2016Article
- Biostimulation of Indigenous Microbial Community for Bioremediation of Petroleum Refinery Sludge.Frontiers in microbiology · 2016Article
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Authors and funding
5 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Arsenic (As) mobilization in alluvial aquifers is caused by a complex interplay of hydro-geo-microbiological activities. Nevertheless, diversity and biogeochemical significance of indigenous bacteria in Bengal Delta Plain are not well documented. We have deciphered bacterial community compositions and metabolic properties in As contaminated groundwater of West Bengal to define their role in As mobilization. Groundwater samples showed characteristic high As, low organic carbon and reducing property. Culture-independent and -dependent analyses revealed presence of diverse, yet near consistent community composition mostly represented by genera Pseudomonas, Flavobacterium, Brevundimonas, Polaromonas, Rhodococcus, Methyloversatilis and Methylotenera. Along with As-resistance and -reductase activities, abilities to metabolize a wide range carbon substrates including long chain and polyaromatic hydrocarbons and HCO3, As3+ as electron donor and As5+/Fe3+ as terminal electron acceptor during anaerobic growth were frequently observed within the cultivable bacteria. Genes encoding cytosolic As5+ reductase (arsC) and As3+ efflux/transporter [arsB and acr3(2)] were found to be more abundant than the dissimilatory As5+ reductase gene arrA. The observed metabolic characteristics showed a good agreement with the same derived from phylogenetic lineages of constituent populations. Selected bacterial strains incubated anaerobically over 300 days using natural orange sand of Pleistocene aquifer showed release of soluble As mostly as As3+ along with several other elements (Al, Fe, Mn, K, etc.). Together with the production of oxalic acid within the biotic microcosms, change in sediment composition and mineralogy indicated dissolution of orange sand coupled with As/Fe reduction. Presence of arsC gene, As5+ reductase activity and oxalic acid production by the bacteria were found to be closely related to their ability to mobilize sediment bound As. Overall observations suggest that indigenous bacteria in oligotrophic groundwater possess adequate catabolic ability to mobilize As by a cascade of reactions, mostly linked to bacterial necessity for essential nutrients and detoxification.
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