摘要
Mn(Ⅱ)氧化细菌广泛存在于自然界中,对其生理特性、氧化机制和功能等的研究,对于进行含锰水处理过程中生物除锰机理的探究具有重大意义.本文就国内外对Mn(Ⅱ)氧化细菌的氧化机理、酶学研究等进展进行了总结.普遍认为,Mn(Ⅱ)的氧化机理可分为:(1)间接氧化,即微生物通过新陈代谢作用改变自身微环境,如pH、Eh,从而实现Mn(Ⅱ)的化学氧化;(2)直接氧化,即锰氧化酶的直接催化氧化或通过特定的键合作用实现氧化.目前酶学研究中所涉及到的酶有:木质素过氧化酶、锰过氧化物酶、漆酶、木质素降解酶等,所涉及到的微生物有:生盘纤发菌、杆状菌、土微菌属、假单胞菌、真菌等.本文同时也提出了Mn(Ⅱ)氧化细菌的微生物学研究中存在的问题,对进一步的研究作了展望.
Mn（Ⅱ） oxidizing bacteria widely occur in nature, and it is important to study their physiological characteristics, oxidation mechanisms and funetions for biological removal of manganese. This paper reviews the advances in the studies on oxidation mechanisms and oxidase of those bacteria in China and abroad. It is generally recognized that Mn（Ⅱ） oxidation mechanism can be divided into two categories： （1） indirect oxidation, that is, Mn（Ⅱ） chemical oxidation by which microorganisms alter their own micro-environment through metabolism, such as pH and Eh; （2） direct oxidation, which is carried out by oxidase through direct catalysis and oxidation or through specific bond effect. Currently, the enzymes that are involved in enzyme research inelude lignin peroxidase, Mn peroxidase, laccase and lingin degrading enzymes, and the related microorganisms are found as Leptothrix discophora, Bacillus sp. , Pedomicrobium sp. , Pseudomonas putida and so on. Some questions about the microbiological studies of Mn（Ⅱ） oxidizing bacteria are presented, and the future studies on those bacteria are also addressed in this paper. Tab 1, Ref 45
出处
《应用与环境生物学报》
CAS
CSCD
北大核心
2008年第1期143-146,共4页
Chinese Journal of Applied and Environmental Biology
基金
国家自然科学基金项目(No50578001)
国家高技术研究发展计划(863计划
No2006AA06Z308)~~
关键词
Mn(Ⅱ)氧化细菌
氧化机理
生物作用
锰氧化酶
Mn（Ⅱ） oxidizing bacteria
oxidation mechanism
biological function
manganese oxidase
