지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2012.4
- 수록면
- 75 - 85 (11page)
이용수
초록· 키워드
오류제보하기
Although, microbial arsenic mobilization by dissimilatory arsenate-reducing bacteria (DARB) and the practical use to the removal technology of arsenic from contaminated soil are expected, most previous research mainly has been focused on the geochemical circulation of arsenic. Therefore, in this review we summarized the previously reported DARB to grasp the characteristic for bioremediation of arsenic. Evidence of microbial growth on arsenate is presented based on isolate analyses, after which a summary of the physiology of the following arsenaterespiring bacteria is provided: Chrysiogenes arsenatis strain BAL-1<SUP>T</SUP>, Sulfurospirillum barnesii, Desulfotomaculum strain Ben-RB, Desulfotomaculum auripigmentum strains OREX-4, GFAJ-1, Bacillus sp., Desulfitobacterium hafniense DCB-2<SUP>T</SUP>, strain SES-3, Citrobacter sp. (TSA-1 and NC-1), Sulfurospirillum arsenophilum sp. nov., Shewanella sp., Chrysiogenes arsenatis BAL-l<SUP>T</SUP>, Deferribacter desulfuricans. Among the DARB, Citrobacter sp. NC-1 is superior to other dissimilatory arsenate-reducing bacteria with respect to arsenate reduction, particularly at high concentrations as high as 60 mM. A gram-negative anaerobic bacterium, Citrobacter sp. NC-1, which was isolated from arsenic contaminated soil, can grow on glucose as an electron donor and arsenate as an electron acceptor. Strain NC-1 rapidly reduced arsenate at 5 mM to arsenite with concomitant cell growth, indicating that arsenate can act as the terminal electron acceptor for anaerobic respiration (dissimilatory arsenate reduction). To characterize the reductase systems in strain NC-1, arsenate and nitrate reduction activities were investigated with washed-cell suspensions and crude cell extracts from cells grown on arsenate or nitrate. These reductase activities were induced individually by the two electron acceptors. Tungstate, which is a typical inhibitory antagonist of molybdenum containing dissimilatory reductases, strongly inhibited the reduction of arsenate and nitrate in anaerobic growth cultures. These results suggest that strain NC-1 catalyzes the reduction of arsenate and nitrate by distinct terminal reductases containing a molybdenum cofactor. This may be advantageous during bioremediation processes where both contaminants are present. Moreover, a brief explanation of arsenic extraction from a model soil artificially contaminated with As (V) using a novel DARB (Citrobacter sp. NC-1) is given in this article. We conclude with a discussion of the importance of microbial arsenate reduction in the environment. The successful application and use of DARB should facilitate the effective bioremediation of arsenic contaminated sites.
목차
Abstract
1. Introduction
2. DARB
3. Characterization of Citrobacter sp. NC-1 indissimilatory arsenate-reduction
4. Perspectives
References
참고문헌 (43)
참고문헌 신청
1. [학술지(정기간행물)] - Pontius F / 1994 / Health implications of arsenic in drinking water / J. Am. Water Works Assoc 86 : 52 ~ 63
2. [학술지(정기간행물)] - Alam, M. G. M / 2001 / Extraction of arsenic in a synthetic arsenic-contaminated soil using phosphate / Chemosphere 43 : 1035 ~ 1041
3. [학술지(정기간행물)] - Macy, J. M / 1996 / Chrysiogenes arsenatis gen. nov., sp. nov., a new arsenate-respiring bacterium isolated from gold mine wastewater / Int. J. Syst. Bacteriol 46 : 1153 ~ 1157
4. [학술지(정기간행물)] - Gates, A. J / 2003 / Properties of the periplasmic nitrate reductases from Paracoccus pantotrophus and Escherichia coli after growth in tungsten supplemented media / FEMS Microbiol. Lett 220 : 261 ~ 269
5. [학술지(정기간행물)] - Oremland, R. S / 2003 / The ecology of arsenic / Science 300 : 939 ~ 944
2. [학술지(정기간행물)] - Alam, M. G. M / 2001 / Extraction of arsenic in a synthetic arsenic-contaminated soil using phosphate / Chemosphere 43 : 1035 ~ 1041
3. [학술지(정기간행물)] - Macy, J. M / 1996 / Chrysiogenes arsenatis gen. nov., sp. nov., a new arsenate-respiring bacterium isolated from gold mine wastewater / Int. J. Syst. Bacteriol 46 : 1153 ~ 1157
4. [학술지(정기간행물)] - Gates, A. J / 2003 / Properties of the periplasmic nitrate reductases from Paracoccus pantotrophus and Escherichia coli after growth in tungsten supplemented media / FEMS Microbiol. Lett 220 : 261 ~ 269
5. [학술지(정기간행물)] - Oremland, R. S / 2003 / The ecology of arsenic / Science 300 : 939 ~ 944
이 논문의 저자 정보
최근 본 자료
댓글(0)
0
UCI(KEPA) : I410-ECN-0101-2014-400-002401940