<i>Bacillus</i>sp. SXB and<i>Pantoea</i>sp. IMH, aerobic As(V)-reducing bacteria isolated from arsenic-contaminated soil

Wu, Qingping; Du, Jian; Zhuang, Guoqiang; Jing, Chuanyong

doi:10.1111/jam.12093

Cited by 32 publications

(15 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…IMH has been reported to have high resistance to As10. However, the molecular mechanism remains unknown.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Arsenic resistance strategy in Pantoea sp. IMH: Organization, function and evolution of ars genes

Wang

Zhuang

et al. 2016

Sci Rep

View full text Add to dashboard Cite

Pantoea sp. IMH is the only bacterium found in genus Pantoea with a high As resistance capacity, but its molecular mechanism is unknown. Herein, the organization, function, and evolution of ars genes in IMH are studied starting with analysis of the whole genome. Two ars systems - ars1 (arsR1B1C1H1) and ars2 (arsR2B2C2H2) - with low sequence homology and two arsC-like genes, were found in the IMH genome. Both ars1 and ars2 are involved in the As resistance, where ars1 is the major contributor at 15 °C and ars2 at 30 °C. The difference in the behavior of these two ars systems is attributed to the disparate activities of their arsR promoters at different temperatures. Sequence analysis based on concatenated ArsRBC indicates that ars1 and ars2 clusters may be acquired from Franconibacter helveticus LMG23732 and Serratia marcescens (plasmid R478), respectively, by horizontal gene transfer (HGT). Nevertheless, two arsC-like genes, probably arising from the duplication of arsC, do not contribute to the As resistance. Our results indicate that Pantoea sp. IMH acquired two different As resistance genetic systems by HGT, allowing the colonization of changing ecosystems, and highlighting the flexible adaptation of microorganisms to resist As.

show abstract

“…IMH has been reported to have high resistance to As10. However, the molecular mechanism remains unknown.…”

Section: Discussionmentioning

confidence: 99%

“…In 2013, strain Pantoea sp. IMH was isolated for the first time from As-polluted groundwater and reported to resist high concentrations of As, up to 150 mM As(V) and 20 mM As(III)10. However, the hyper As-resistance strategy employed by Pantoea sp.…”

mentioning

confidence: 99%

Arsenic resistance strategy in Pantoea sp. IMH: Organization, function and evolution of ars genes

Wang

Zhuang

et al. 2016

Sci Rep

View full text Add to dashboard Cite

show abstract

“…SXB reduced 95% As(V) of 1 mmol/L in 22 hr (43.18 μmol/(L·hr)), and Pantoea sp. IMH reduced 97% As(V) of 1 mmol/L in 60 hr (16.17 μmol/(L·hr)) (Wu et al, 2013). Some isolated strains reduced As relatively slowly.…”

Section: As(iii)-oxidizing Bacteriamentioning

confidence: 96%

Arsenic redox transformation by Pseudomonas sp. HN-2 isolated from arsenic-contaminated soil in Hunan, China

Zhang

Yin

Cai

et al. 2016

Journal of Environmental Sciences

View full text Add to dashboard Cite

A mesophilic, Gram-negative, arsenite[As(III)]-oxidizing and arsenate[As(V)]-reducing bacterial strain, Pseudomonas sp. HN-2, was isolated from an As-contaminated soil. Phylogenetic analysis based on 16S rRNA gene sequencing indicated that the strain was closely related to Pseudomonas stutzeri. Under aerobic conditions, this strain oxidized 92.0% (61.4 μmol/L) of arsenite to arsenate within 3 hr of incubation. Reduction of As(V) to As(III) occurred in anoxic conditions. Pseudomonas sp. HN-2 is among the first soil bacteria shown to be capable of both aerobic As(III) oxidation and anoxic As(V) reduction. The strain, as an efficient As(III) oxidizer and As(V) reducer in Pseudomonas, has the potential to impact arsenic mobility in both anoxic and aerobic environments, and has potential application in As remediation processes.

show abstract

“…reduced As(V) under anaerobic conditions. They all belong to the facultative anaerobic bacteria (Wu et al, 2013).…”

Section: Biotransformation Of Dissolved Asmentioning

confidence: 99%

Arsenate reduction and mobilization in the presence of indigenous aerobic bacteria obtained from high arsenic aquifers of the Hetao basin, Inner Mongolia

Guo

Liu

Ding

et al. 2015

Environmental Pollution

View full text Add to dashboard Cite

Bacillussp. SXB andPantoeasp. IMH, aerobic As(V)-reducing bacteria isolated from arsenic-contaminated soil

Cited by 32 publications

References 32 publications

Arsenic resistance strategy in Pantoea sp. IMH: Organization, function and evolution of ars genes

Arsenic resistance strategy in Pantoea sp. IMH: Organization, function and evolution of ars genes

Arsenic redox transformation by Pseudomonas sp. HN-2 isolated from arsenic-contaminated soil in Hunan, China

Arsenate reduction and mobilization in the presence of indigenous aerobic bacteria obtained from high arsenic aquifers of the Hetao basin, Inner Mongolia

Contact Info

Product

Resources

About