Environmental Engineering Research

  • 제15권1호
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  • Pages.15-21
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  • 2010
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  • 1226-1025(pISSN)
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  • 2005-968X(eISSN)
대한환경공학회 (Korean Society of Environmental Engineers)
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Arsenite Oxidation by Bacillus sp. Strain SeaH-As22w Isolated from Coastal Seawater in Yeosu Bay

  • Chang, Jin-Soo (Molecular Biogeochemistry Laboratory, Department of Biological and Chemical Engineering, Yanbian University of Science and Technology (YUST)) ;
  • Kim, In-S. (Department of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST))
  • 발행 : 2010.03.31
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초록

This study was conducted to evaluated seawater bacteria and their seasonal characteristics in the arsenic contaminated coastal seawater of Yeosu Bay, the Republic of Korea. Arsenite-oxidizing bacteria play an important role in the seawater of the arsenic contaminated bay, with a variety of arsenic resistance system (ars) genotypes being present during summer. Specifically, Bacillus sp. strain SeaH-As22w (FJ607342), isolated from the bay, were found to contain the arsB, arrA and aoxR type operons, which are involved in arsenic resistance. The isolated bacteria showed relatively high tolerance to sodium arsenite (III; $NaAsO_2$) at concentrations as high as 50 mM. Additionally, batch seawater experiments showed that Bacillus sp. strain SeaH-As22w completely oxidized 1 mM of As (III) to As (V) within 10 days. Ecologically, the arsenic-oxidizing potential plays an important role in arsenic toxicity and mobility in As-contaminated coastal seawater of Yeosu Bay during all seasons because it facilitates the activity of Bacillus sp. groups.

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피인용 문헌

  1. Bacteria and Genes Involved in Arsenic Speciation in Sediment Impacted by Long-Term Gold Mining vol.9, pp.4, 2014, https://doi.org/10.1371/journal.pone.0095655
  2. Investigation of Bioremediation of Arsenic by Bacteria Isolated from an Arsenic Contaminated Area vol.4, pp.1, 2017, https://doi.org/10.1007/s40710-016-0201-z
  3. Arsenic-tolerant, arsenite-oxidising bacterial strains in the contaminated soils of West Bengal, India vol.463, pp.None, 2010, https://doi.org/10.1016/j.scitotenv.2013.06.068
  4. Characterization of Arsenite-Oxidizing Bacteria Isolated from Arsenic-Rich Sediments, Atacama Desert, Chile vol.9, pp.3, 2010, https://doi.org/10.3390/microorganisms9030483