Arsenite oxidation by a facultative chemolithotrophic Delftia spp. BAs29 for its potential application in groundwater arsenic bioremediation

Biswas, Rimi; Vivekanand, Vivekanand; Saha, Anima; Ghosh, Ashok; Sarkar, Angana

doi:10.1016/j.ibiod.2018.10.006

Cited by 46 publications

(9 citation statements)

References 40 publications

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“…AS-1, Delftia spp. BAs29, Ensifer adhaerens , Micrococcus sp., Pseudomonas chengduensis , and T. arsenivorans (Biswas and Sarkar 2019 ; Biswas et al 2019 ; Corsini et al 2014 ; Ito et al 2012 ; Jebelli et al 2018 ; Lu et al 2018 ; Roychowdhury et al 2018 ; Wan et al 2010 ).…”

Section: Arsenic Microbial Metabolisms and Bioremediationmentioning

confidence: 99%

Water and soil contaminated by arsenic: the use of microorganisms and plants in bioremediation

Bertin

Crognale

Plewniak

et al. 2021

Environ Sci Pollut Res

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Owing to their roles in the arsenic (As) biogeochemical cycle, microorganisms and plants offer significant potential for developing innovative biotechnological applications able to remediate As pollutions. This possible use in bioremediation processes and phytomanagement is based on their ability to catalyse various biotransformation reactions leading to, e.g. the precipitation, dissolution, and sequestration of As, stabilisation in the root zone and shoot As removal. On the one hand, genomic studies of microorganisms and their communities are useful in understanding their metabolic activities and their interaction with As. On the other hand, our knowledge of molecular mechanisms and fate of As in plants has been improved by laboratory and field experiments. Such studies pave new avenues for developing environmentally friendly bioprocessing options targeting As, which worldwide represents a major risk to many ecosystems and human health.

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Section: Arsenic Microbial Metabolisms and Bioremediationmentioning

confidence: 99%

Water and soil contaminated by arsenic: the use of microorganisms and plants in bioremediation

Bertin

Crognale

Plewniak

et al. 2021

Environ Sci Pollut Res

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“…strains X13 [34] and SM1 [35] Delftia sp. BAs29 [36] and Delftia acidovorans [37] have all shown resistance along with metal reduction or biosorption capacity on cadmium, uranium, arsenate, and gold, respectively. In this study, however, these bacteria isolates Stenotrophomonas (A1 LY), Raoultella (Isolates 4 and 5), Achromobacter (Isolate 6), Delftia (A3SWS), and Cupriavidus (C3 SD) demonstrated very low resistance to the tested metals especially under combined acidic and metal-containing (i.e., copper, iron, and zinc) experimental conditions.…”

Section: Discussionmentioning

confidence: 99%

Isolation and characterization of an acid and metal tolerant Enterobacter cloacae NZS strain from former mining lake in Selangor, Malaysia

Mazalan

Oyeleye

Rahman

et al. 2020

Beni-Suef Univ J Basic Appl Sci

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Background: Metal polluted environments have been found to harbor acid and metal tolerant bacterial communities. Metal oxidizing bacteria in particular are industrially important microorganisms that can be utilized for potential applications in biomining and bioremediation. However, some well-characterized strains are not readily culturable as they are obligate and fastidious chemolithotrophs requiring special techniques for their cultivation. Hence, this study was aimed at isolating, identifying, and characterizing indigenous metal tolerant heterotroph(s) from abandoned mines that can potentially be used for biomining or bioremediation processes in the future. Results: Seventeen bacteria from former mining lakes were isolated and identified using 16S rRNA. Minimal inhibition concentration (MIC) and growth study of isolated bacteria carried out in Luria-Bertani media containing three different metals ions, zinc (II), copper (II), and iron (II), showed that a particular isolate termed Enterobacter cloacae NZS was found to exhibit better growth and tolerance for copper (up to 90 mM), zinc (up to 200 mM), and iron (up to 170 mM). Growth of the strain was notably well in the presence of iron (II). Compared to all the isolates, only E. cloacae NZS was able to be enumerated at pH lower than 5 while other strains were culturable only at pH 7. Its capability in iron (II) oxidation was preliminary assessed based on the pH, cell count, glucose consumption, and amount of iron oxidized throughout incubation in 9K media. E. cloacae NZS strain was found to be capable of oxidizing iron (II) supplied in 9K media to iron (III). Conclusion: As preliminary investigation showed that E. cloacae NZS was able to oxidize iron (II) in 9K media at pH2, further optimization on the strain, medium, and culture conditions in future may be able to provide a better insight on this strain to be possibly used as an iron oxidizer for various applications.

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“…The 16S rRNA gene from the genomic DNA was extracted out and amplified using hot-start PCR (Veriti 96-Well Thermal Cycler, Applied Biosystems, Thermo Fischer Scientific, Singapore). For this purpose, 27F forward and 1492R reverse universal degenerative primers were used [27]. The initial hot stage was conducted by maintaining 94 °C for 5 min which is followed by 35 cycles comprising a denaturation stage of 94 °C for 15 s, an annealing stage of 52 °C for 50 s, and an elongation stage of 72 °C for 90 s. At the end of the 35 cycles, a concluding extension step was incorporated for 10 min.…”

Section: Molecular Identification and Phylogenetic Analysismentioning

confidence: 99%

Purification and optimization of pink pigment produced by newly isolated bacterial strain Enterobacter sp. PWN1

et al. 2021

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Pigment-producing bacteria were isolated from kitchen wastewaters of the National Institute of Technology, Rourkela. A pink non-virulent bacterial strain PWN1 was selected based on the India Ink Broth and Coomassie Brilliant Blue (R-250) dye assay. According to morphological and biochemical characterization, the strain PWN1was a Gram-negative, rod-shaped, motile, non-coliform bacterium and could utilize only glucose and adonitol as sole carbon source. The pigment was found to be a growth-associated product, and the pigment production was accelerated after 40 h of bacterial culture. Further, 16S rRNA gene-based molecular identification showed its similarity with Enterobacter sp. The pigments were extracted by the solvent extraction method using chloroform and ethanol (3:1). The extracted pigments were then purified through thin-layer chromatography and column chromatography. To maximize pigment production, the culture condition was optimized for maximum biomass production using statistical software Design Expert v13. A quadratic model was structured describing the process efficiently and it suggested a moderate temperature, pH, and a high inoculum concentration which generated biomass of 3.81 ± 0.02 g/L. At optimized condition, 1 L of cell culture produced 3.77 g of biomass which produced a crude pigment of 0.234 g after solvent extraction and 0.131 g after column chromatography, implying a yield of 6.2% for crude pigment and 3.47% for purified pigment from biomass. The yield of the obtained pigment was high enough to draw interest for industrial production, although the application of the pigment is considerable for further study.

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Arsenite oxidation by a facultative chemolithotrophic Delftia spp. BAs29 for its potential application in groundwater arsenic bioremediation

Cited by 46 publications

References 40 publications

Water and soil contaminated by arsenic: the use of microorganisms and plants in bioremediation

Water and soil contaminated by arsenic: the use of microorganisms and plants in bioremediation

Isolation and characterization of an acid and metal tolerant Enterobacter cloacae NZS strain from former mining lake in Selangor, Malaysia

Purification and optimization of pink pigment produced by newly isolated bacterial strain Enterobacter sp. PWN1

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