Bacillus sp. strain DJ-1, potent arsenic hypertolerant bacterium isolated from the industrial effluent of India

Joshi, Dhaval N.; Flora, S.J.S.; Kalia, Kiran

doi:10.1016/j.jhazmat.2008.12.127

Cited by 54 publications

(28 citation statements)

References 27 publications

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“…OM4, which tolerated concentrations of arsenite up to 16 mM. Such high resistance to arsenic was also found in other arsenic-tolerating microorganisms, but any described arsenic hypertolerant strain was able to use As (V) in dissimilatory arsenate reduction [20, 32]. The presence of arsC gene was confirmed in the genomes of all of the tested strains (Table 1).…”

Section: Resultssupporting

confidence: 54%

Dissolution of Arsenic Minerals Mediated by Dissimilatory Arsenate Reducing Bacteria: Estimation of the Physiological Potential for Arsenic Mobilization

Drewniak

Rajpert

Aleksandra

et al. 2014

BioMed Research International

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The aim of this study was characterization of the isolated dissimilatory arsenate reducing bacteria in the context of their potential for arsenic removal from primary arsenic minerals through reductive dissolution. Four strains, Shewanella sp. OM1, Pseudomonas sp. OM2, Aeromonas sp. OM4, and Serratia sp. OM17, capable of anaerobic growth with As (V) reduction, were isolated from microbial mats from an ancient gold mine. All of the isolated strains: (i) produced siderophores that promote dissolution of minerals, (ii) were resistant to dissolved arsenic compounds, (iii) were able to use the dissolved arsenates as the terminal electron acceptor, and (iii) were able to use copper minerals containing arsenic minerals (e.g., enargite) as a respiratory substrate. Based on the results obtained in this study, we postulate that arsenic can be released from some As-bearing polymetallic minerals (such as copper ore concentrates or middlings) under reductive conditions by dissimilatory arsenate reducers in indirect processes.

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Section: Resultssupporting

confidence: 54%

Dissolution of Arsenic Minerals Mediated by Dissimilatory Arsenate Reducing Bacteria: Estimation of the Physiological Potential for Arsenic Mobilization

Drewniak

Rajpert

Aleksandra

et al. 2014

BioMed Research International

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“…One of the bacterial isolates (As‐9) showed much higher resistance toward both As(V) and As(III) (700 and 180 mM, respectively) and was selected for further studies. Many different bacteria capable of resisting varying concentrations of arsenic have been previously reported , but this is the highest concentration of arsenic tolerance toward both inorganic forms reported till date to the best of our knowledge. According to these results, it is clear that the isolate As‐9 exhibited levels of resistance, high enough to be considered for possible bioremediation of native soils and sediments.…”

Section: Resultsmentioning

confidence: 90%

Arsenic Removal and Biotransformation Potential of Exiguobacterium Isolated From an Arsenic‐Rich Soil of Chhattisgarh, India

Pandey

Bhatt

2015

CLEAN Soil Air Water

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The presence of arsenic (As) in soil and groundwater has become a serious environmental issue of various regions of India. A haloalkaliphilic Exiguobacterium sp. (As-9) was isolated via enrichment culture technique from an arsenic-rich soil of the Rajnandgaon district in the state of Chhattisgarh, India, and characterized as a novel arsenic removing bacteria. The isolate proved to be capable of growing over a broad range of arsenic concentration and was resistant to relatively high levels of arsenate (700 mM) and arsenite (180 mM). It displayed great potential in removing about 99% arsenic under aerobic conditions from the aqueous environment in ten days at 37°C at 100 rpm. Electron microscopy revealed a fourfold increase in the cell size due to intracellular accumulation of arsenic. Selective enzyme assays confirmed that the two intracellular enzymes, namely arsenate reductase and arsenite oxidase played a significant role in arsenate reduction and arsenite oxidation, respectively, thereby contributing to the effective removal of arsenic. These results provide evidence for the occurrence of two distinct mechanisms involved in arsenic resistance; one via arsenate reduction and the other via arsenite oxidation. Moreover, the study reports for the first time the role of arsenic transforming bacteria from this region which could resist and transform exceptionally high concentrations of arsenic oxyanions. Such metabolically active bacterial strain may find application in the treatment of arsenic contaminated soil and aquifers in the near future.

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“…More specifically, Al/Fe modified montmorillonite exhibited lower biosorption capacities of As(III) and As(V) at 18.19 and 21.19 mg·g −1 , whereas other biosorbents including Acidithiobacillus ferrooxidedan BY-3, Bacillus sp. strain DJ-1 and agricultural residues exhibited lower values of maximum uptake capacity at 277.22 and 323.85 g·g −1 , 6.14 and 9.8 g·g −1 and 138.88 and 147.05 g·g −1 for As(III) and As(V) respectively [31][32][33][34]. However, Inonotus hipidus biomass exhibited maximum uptake capacity at 51.9 and 59.6 mg·g −1 for As(III) and As(V) respectively, values close to our results [35].…”

Section: As(iii) and As(v) Biosorption Isotherms-results Interpretationmentioning

confidence: 99%

Study on arsenic biosorption using Fe(III)-treated biomass of Staphylococcus xylosus

Aryal

Ziagova

Liakopoulou-Kyriakides

2010

Chemical Engineering Journal

151

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Bacillus sp. strain DJ-1, potent arsenic hypertolerant bacterium isolated from the industrial effluent of India

Cited by 54 publications

References 27 publications

Dissolution of Arsenic Minerals Mediated by Dissimilatory Arsenate Reducing Bacteria: Estimation of the Physiological Potential for Arsenic Mobilization

Dissolution of Arsenic Minerals Mediated by Dissimilatory Arsenate Reducing Bacteria: Estimation of the Physiological Potential for Arsenic Mobilization

Arsenic Removal and Biotransformation Potential of Exiguobacterium Isolated From an Arsenic‐Rich Soil of Chhattisgarh, India

Study on arsenic biosorption using Fe(III)-treated biomass of Staphylococcus xylosus

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