A Critical Review of Resistance and Oxidation Mechanisms of Sb-Oxidizing Bacteria for the Bioremediation of Sb(III) Pollution

Frontiers in Microbiology

Guizhong Jin¹  Xinpin Deng²  Zhongjie Huang³  Yilin Chen³  Renjian Deng³  Bozhi Ren³  Saijun Zhou³  Andrew Hursthouse⁴ 

[1] Hsikwangshan Twinkling Star Co., Ltd., Lengshuijiang, China;Hunan 402 Geological Prospecting Part, Changsha, China;School of Civil Engineering, Hunan University of Science and Technology, Xiangtan, China;School of Computing, Engineering and Physical Sciences, The University of the West of Scotland, Paisley, United Kingdom;

关键词: Sb-oxidizing bacteria;    antimony;    Sb(III)-resistance;    oxidation;    mechanism;   

DOI  :  10.3389/fmicb.2021.738596

来源: DOAJ

【 摘 要 】

Antimony (Sb) is a priority pollutant in many countries and regions due to its chronic toxicity and potential carcinogenicity. Elevated concentrations of Sb in the environmental originating from mining and other anthropogenic sources are of particular global concern, so the prevention and control of the source of pollution and environment remediation are urgent. It is widely accepted that indigenous microbes play an important role in Sb speciation, mobility, bioavailability, and fate in the natural environment. Especially, antimony-oxidizing bacteria can promote the release of antimony from ore deposits to the wider environment. However, it can also oxidize the more toxic antimonite [Sb(III)] to the less-toxic antimonate [Sb(V)], which is considered as a potentially environmentally friendly and efficient remediation technology for Sb pollution. Therefore, understanding its biological oxidation mechanism has great practical significance to protect environment and human health. This paper reviews studies of the isolation, identification, diversity, Sb(III) resistance mechanisms, Sb(III) oxidation characteristics and mechanism and potential application of Sb-oxidizing bacteria. The aim is to provide a theoretical basis and reference for the diversity and metabolic mechanism of Sb-oxidizing bacteria, the prevention and control of Sb pollution sources, and the application of environment treatment for Sb pollution.

【 授权许可】

Unknown