Advance on Studies of Arsenic-resistant Microorganisms and Molecular Mechanisms
- VernacularTitle:抗砷性微生物及其抗砷分子机制研究进展
- Author:
Lin CAI
;
Ge-Jiao WANG
;
- Publication Type:Journal Article
- Keywords:
Arsenic, Arsenic-resistant microorganisms, Arsenite oxidation, Arsenate reduction, Arsenite methylation, Arsenic contamination, Bioremediation
- From:
Microbiology
2008;0(08):-
- CountryChina
- Language:Chinese
-
Abstract:
Arsenic is known as a toxic metalloid, which mainly exists in inorganic forms such as arsenite and arsenate in the natural environment. A number of microorganisms have evolved different resistant mechanisms for arsenic detoxification to cope with the widespread distribution of the poisonous arsenic. Four distinct microbial arsenic-resistant mechanisms have been described including As(III) oxidation, cytoplasmic As(V) reduction, respiratory As(V) reduction, and As(III) methylation. These mechanisms confer arsenic resistance in microorganisms that play important roles in the transformation and geological cycle of arsenic. This review mainly focuses on the researches on these molecular mechanisms and potential application for environmental arsenic bioremediation using microorganisms.
