Cellular Response of Sinorhizobium sp. Strain A2 during Arsenite Oxidation

Arsenic (As) is a widely distributed toxic element in the environment and microorganisms have developed resistance mechanisms in order to tolerate it. The cellular response of the chemoorganotrophic arsenite (As[III])-oxidizing α-Proteobacteria, Sinorhizobium sp. strain A2, to arsenic was examined i...

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Detalles Bibliográficos
Autores principales: Fukushima, Koh, Huang, He, Hamamura, Natsuko
Formato: Online Artículo Texto
Lenguaje:English
Publicado: the Japanese Society of Microbial Ecology (JSME)/the Japanese Society of Soil Microbiology (JSSM)/the Taiwan Society of Microbial Ecology (TSME)/the Japanese Society of Plant Microbe Interactions (JSPMI) 2015
Materias:
Short Communication
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4676556/
https://www.ncbi.nlm.nih.gov/pubmed/26477790
http://dx.doi.org/10.1264/jsme2.ME15096
Descripción
Sumario:Arsenic (As) is a widely distributed toxic element in the environment and microorganisms have developed resistance mechanisms in order to tolerate it. The cellular response of the chemoorganotrophic arsenite (As[III])-oxidizing α-Proteobacteria, Sinorhizobium sp. strain A2, to arsenic was examined in the present study. Several proteins associated with arsenite oxidase and As resistance were shown to be accumulated in the presence of As(III). A shift in central carbon metabolism from the tricarboxylic acid pathway to glyoxylate pathway was also observed in response to oxidative stress. Our results revealed the strategy of the As(III)-oxidizing Sinorhizobium strain to mitigate arsenic toxicity and oxidative damage by multiple metabolic adaptations.

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