Abstract:
: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.
journal_name
Microbes Environjournal_title
Microbes and environmentsauthors
Fukushima K,Huang H,Hamamura Ndoi
10.1264/jsme2.ME15096subject
Has Abstractpub_date
2015-01-01 00:00:00pages
330-4issue
4eissn
1342-6311issn
1347-4405journal_volume
30pub_type
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