Microbes involved in arsenic mobilization and respiration: a review on isolation, identification, isolates and implications

Mazumder, Payal; Sharma, Subhash; Taki, Kaling; Kalamdhad, Ajay S.; Kumar, Manish

doi:10.1007/s10653-020-00549-8

Cited by 41 publications

(16 citation statements)

References 150 publications

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“…Even though proteins related to oxidation and respiration of As were less abundant, their distribution is interesting, which could be due to niche-specific conditions. Although these mechanisms are somewhat known and recurrent, much remains unclear, mostly regarding their function and interconnection with the central metabolism of bacteria ( 66 , 67 ). This problem is exacerbated when working in unexplored environments, where unknown or unclassified organisms abound.…”

Section: Discussionmentioning

confidence: 99%

Living to the High Extreme: Unraveling the Composition, Structure, and Functional Insights of Bacterial Communities Thriving in the Arsenic-Rich Salar de Huasco Altiplanic Ecosystem

et al. 2021

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Section: Discussionmentioning

confidence: 99%

Living to the High Extreme: Unraveling the Composition, Structure, and Functional Insights of Bacterial Communities Thriving in the Arsenic-Rich Salar de Huasco Altiplanic Ecosystem

et al. 2021

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“…This appears to be a cyclic phenomenon altering between the pre-monsoon and the post-monsoon as reverse ion exchange becomes the norm during the post-monsoon season. Two previous studies have also revealed that the soil of the Indo-Gangetic Plains is sodic 6,9,14,26 . Presence of sodium carbonate was found to immobilize Ca 2+ resulting in a high sodium adsorption ratio (SAR) and ultimately, a high exchangeable sodium percentage (ESP).…”

Section: −mentioning

confidence: 89%

“…Arsenic release is suspected to be microbial degradation of sedimentary organic deposits under the presence of O 2 and NO 3 − 4-6 . The process further accelerates with suitable mineralogical and geological conditions [7][8][9] . On the other hand, human-induced anthropogenic activities like overutilization of groundwater disrupt the equilibrium between the oxic and anoxic zones causing the increased formation of metal oxyhydroxides.…”

Section: Introductionmentioning

confidence: 99%

Natural recharge transcends anthropogenic forcing that influences arsenic vulnerability of the quaternary alluviums of the Mid-Gangetic Plain

et al. 2020

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We evaluated the anthropogenic forcing and exceedance probability of arsenic vulnerability in the Quaternary Alluviums of the Mid-Gangetic Plain through the coupled application of hydrogeochemical analyses, inverse modelling, probability analyses, kriging, bivariate and multivariate statistical analysis (MVA). Fifty-seven groundwater samples (total 171) each were collected during the pre-monsoon (April 2015), monsoon (July 2015) and post-monsoon (January 2016). Seasonal cyclicity of ion exchange and reverse ion exchange was observed, with the former being common during pre-monsoon while the latter was dominant during post-monsoon. PHREEQC modelling showed the involvement of the agrochemicals such as calcium nitrate and calcium phosphate and other isolated incidences of chemical usage like bleaching powder as well as the probability of wet deposition of the anions like SO42− and NO3−. Kriging-based arsenic mapping revealed that rainfall recharge-led dilution plays the most dominant role in its mobilization. Owing to natural recharge in the alluvium plain, the exceedance probability of arsenic concentration above 5 μg L−1 falls drastically from more than 0.8 in the pre-monsoon to 0.5 during the post-monsoon. Study implies that pre-monsoon pumping of groundwater must be regulated in combination with proper disposal of pH and ORP affecting chemicals so that the high natural recharge should not significantly induce arsenic mobilization. Further, we recommend that vulnerability estimation should not be based solely on the present scenarios but must include the features of probable exceedance and saturation status of groundwater in this belt. We put forward a comprehensive model to explain the operative processes governing arsenic mobilization.

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“…Additionally, some prokaryotes, such as Chrysiogenes arsenatis, Shewanella sp. strain ANA-3 and Bacillus selenitireducens, can utilize arsenate as a terminal electron acceptor for anaerobic respiration, expressing a respiratory reductase (arrAB), which is also considered to be involved in arsenic release from anaerobic sediments worldwide (Ahmann et al 1994;Dowdle, Laverman and Oremland 1996;Saltikov and Newman 2003;Tsuchiya et al 2019;Mazumder et al 2020).…”

Section: Introductionmentioning

confidence: 99%

An arsRB resistance operon confers tolerance to arsenite in the environmental isolate Terribacillus sp. AE2B 122

Escobar-Niño

Sánchez-Barrionuevo

Torres-Torres

et al. 2021

FEMS Microbiology Ecology

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Terribacillus sp. AE2B 122 is an environmental strain isolated from olive-oil agroindustry wastes. This strain displays resistance to arsenic, one of the most ubiquitous carcinogens found in nature. Terribacillus sp. AE2B 122 possesses an unusual ars operon, consisting of the transcriptional regulator (arsR) and arsenite efflux pump (arsB) but no adjacent arsenate reductase (arsC) locus. Expression of arsR and arsB was induced when Terribacillus was exposed to sub-lethal concentrations of arsenate. Heterologous expression of the arsB homologue in Escherichia coli ∆arsRBC demonstrated that it conferred resistance to arsenite and reduced the accumulation of arsenic inside the cells. Two members of the arsC-like family (Te3384 and Te2854) found in the Terribacillus genome were not induced by arsenic, but their heterologous expression in E. coli ∆arsC and ∆arsRBC increased the accumulation of arsenic in both strains. We found that both Te3384 and Te2854 slightly increased resistance to arsenate in E. coli ∆arsC and ∆arsRBC, possibly by chelation of arsenic or increasing the resistance to oxidative stress. Finally, arsenic speciation assays suggest that Terribacillus is incapable of arsenate reduction, in agreement with the lack of an arsC homologue in the genome.

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Microbes involved in arsenic mobilization and respiration: a review on isolation, identification, isolates and implications

Cited by 41 publications

References 150 publications

Living to the High Extreme: Unraveling the Composition, Structure, and Functional Insights of Bacterial Communities Thriving in the Arsenic-Rich Salar de Huasco Altiplanic Ecosystem

Living to the High Extreme: Unraveling the Composition, Structure, and Functional Insights of Bacterial Communities Thriving in the Arsenic-Rich Salar de Huasco Altiplanic Ecosystem

Natural recharge transcends anthropogenic forcing that influences arsenic vulnerability of the quaternary alluviums of the Mid-Gangetic Plain

An arsRB resistance operon confers tolerance to arsenite in the environmental isolate Terribacillus sp. AE2B 122

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