Brevibacillus sp. KUMAs2, a bacterial isolate for possible bioremediation of arsenic in rhizosphere

Mallick, Ivy; Hossain, Sk Tofajjen; Sinha, Sangram; Mukherjee, Samir Kumar

doi:10.1016/j.ecoenv.2014.06.007

Cited by 57 publications

(19 citation statements)

References 51 publications

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“…The hypothesis was confirmed by SEM analysis which showed high level colonization of Exiguobacterium on the root surface of the inoculated mung bean plants. This proved that the successful colonization of the bacterium resulted in the decreased uptake of arsenic in tissues and helped the plants to grow and propagate at high concentrations of arsenic [49]. It is well established that inoculation of the beneficial bacteria not only colonize the roots of the plants but also prevent the rate and extent of pathogen colonization in roots [50].…”

Section: Discussionmentioning

confidence: 98%

Role of soil associated Exiguobacterium in reducing arsenic toxicity and promoting plant growth in Vigna radiata

Pandey

Bhatt

2016

European Journal of Soil Biology

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Section: Discussionmentioning

confidence: 98%

Role of soil associated Exiguobacterium in reducing arsenic toxicity and promoting plant growth in Vigna radiata

Pandey

Bhatt

2016

European Journal of Soil Biology

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“…It was recently reported that, an As resistant Brevibacillus sp. which could resist As(III) of 17 mM was reported having arsenic removal capacity under aerobic culture conditions (Mallick et al 2014 ).…”

Section: Discussionmentioning

confidence: 99%

Diversity of arsenite oxidase gene and arsenotrophic bacteria in arsenic affected Bangladesh soils

et al. 2016

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Arsenic (As) contaminated soils are enriched with arsenotrophic bacteria. The present study analyzes the microbiome and arsenotrophic genes-from As affected soil samples of Bhanga, Charvadrason and Sadarpur of Faridpur district in Bangladesh in summer (SFDSL1, 2, 3) and in winter (WFDSL1, 2, 3). Total As content of the soils was within the range of 3.24–17.8 mg/kg as per atomic absorption spectroscopy. The aioA gene, conferring arsenite [As (III)] oxidation, was retrieved from the soil sample, WFDSL-2, reported with As concentration of 4.9 mg/kg. Phylogenetic analysis revealed that the aioA genes of soil WFDSL-2 were distributed among four major phylogenetic lineages comprised of α, β, γ Proteobacteria and Archaea with a dominance of β Proteobacteria (56.67 %). An attempt to enrich As (III) metabolizing bacteria resulted 53 isolates. ARDRA (amplified ribosomal DNA restriction analysis) followed by 16S rRNA gene sequencing of the 53 soil isolates revealed that they belong to six genera; Pseudomonas spp., Bacillus spp., Brevibacillus spp., Delftia spp., Wohlfahrtiimonas spp. and Dietzia spp. From five different genera, isolates Delftia sp. A2i, Pseudomonas sp. A3i, W. chitiniclastica H3f, Dietzia sp. H2f, Bacillus sp. H2k contained arsB gene and showed arsenite tolerance up-to 27 mM. Phenotypic As (III) oxidation potential was also confirmed with the isolates of each genus and isolate Brevibacillus sp. A1a showed significant As (III) transforming potential of 0.2425 mM per hour. The genetic information of bacterial arsenotrophy and arsenite oxidation added scientific information about the possible bioremediation potential of the soil isolates in Bangladesh.Electronic supplementary materialThe online version of this article (doi:10.1186/s13568-016-0193-0) contains supplementary material, which is available to authorized users.

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“…This has increased the challenges to raise plants in As‐rich soil. Despite the high level of As in the soil environment, many bacteria have been reported to produce PGP substances in combination with metal resistance . In the present study, three As‐resistant isolates viz ARP3, ARRP3, and ADT5 were found to display PGP properties under in vitro conditions.…”

Section: Discussionmentioning

confidence: 54%

Characterization of arsenic resistant plant‐growth promoting indigenous soil bacteria isolated from Center‐East regions of India

Pandey

Keshavkant

2019

J Basic Microbiol

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A total of 45 morphologically distinct arsenic (As)-resistant bacterial strains were isolated from the soils of different regions of Chhattisgarh, India. The minimum inhibitory concentration (MIC) values of these isolates varied widely in the range of 100-500 mM for arsenate [As(V)] and 15-30 mM for arsenite [As(III)]. Out of forty-five, three isolates viz; ARP3, ARRP3, and ADT5 also revealed plant growth-promoting properties, including phosphate solubilization and production of siderophores, indoleacetic acid, ammonia, and exopolysaccharide. Besides all these, the strains not only exhibited significant growth in the presence of As(V)/As(III) but also displayed higher efficiency (87%-94%) of As removal from the growth medium followed by intracellular accumulation (17-19 mg As/g). Hydride generation atomic absorption spectroscopic (HG-AAS) analysis revealed the intracellular accumulation of As, and the structural changes that took place in these isolates were further confirmed by microscopic studies. The 16 S rRNA and phylogenetic analyses unveiled that the isolates ARP3, ARRP3, and ADT5 belonged to genera Pseudomonas, Exiguobaterium, and Microbacterium, respectively. The conducted study suggested that such beneficial bacterial strains could be conveniently exploited at a commercial level for enhancing plant growth in As-contaminated agricultural fields, thereby improved productivity and enhanced bioremediation of soil having alarming strength of As.

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Brevibacillus sp. KUMAs2, a bacterial isolate for possible bioremediation of arsenic in rhizosphere

Cited by 57 publications

References 51 publications

Role of soil associated Exiguobacterium in reducing arsenic toxicity and promoting plant growth in Vigna radiata

Role of soil associated Exiguobacterium in reducing arsenic toxicity and promoting plant growth in Vigna radiata

Diversity of arsenite oxidase gene and arsenotrophic bacteria in arsenic affected Bangladesh soils

Characterization of arsenic resistant plant‐growth promoting indigenous soil bacteria isolated from Center‐East regions of India

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