动胶菌属系统分类、生理特征及其在活性污泥中的作用

发布时间：2018-05-26 01:41

  本文选题：活性污泥法 + 菌胶团　； 参考：《应用与环境生物学报》2016年06期

【摘要】：微生物菌群一直是活性污泥研究过程中的关键问题,近年来通过分子生物学等研究手段已经发现动胶菌是活性污泥微生物菌群中的优势细菌.本文以活性污泥微生物菌群为出发点,重点梳理了动胶菌属分类学研究历史和现状,并建议在前期命名过程中出现的垂(悬)丝状动胶菌和生枝动胶菌ATCC 19623株及ATCC 25935株不应再作为动胶菌属细菌对待.同时介绍了动胶菌属细菌的基本特性及其在活性污泥法处理废水中降解有机物、除磷脱氮和吸附重金属离子等方面的应用,以及动胶菌胞外多聚物的组成和动胶菌优良菌株的选育.我们及合作者最近分析了两个喜树脂动胶菌的基因组并鉴定出参与菌胶团形成的一个大型基因簇,也实现了基因定点敲除等遗传操作.今后研究应重点关注动胶菌分子遗传学、功能基因组学及胞外多聚物生物合成和菌胶团形成机理、化学结构和性质.
[Abstract]:Microbial flora is the key problem in the research process of activated sludge. In recent years, it has been found that GerB is the dominant bacteria in the microbial flora of activated sludge by means of molecular biology. This paper focuses on the history and present status of the taxonomy of the genus gerbie, and suggests that the microbial flora of activated sludge is the starting point. The vertical (suspended) filamentous germs, 19623 strains of ATCC and 25935 strains of ATCC should not be treated as germs, and the basic characteristics of the bacteria of the genus geriti and the degradation of organic compounds in the wastewater treatment by activated sludge process, phosphorus removal and adsorption of heavy metal ions were also introduced. As well as the composition of the extracellular polymeric substances and the breeding of fine strains of the bacteria, we and the collaborators have recently analyzed the genome of two strains of the gum resin and identified a large gene cluster involved in the formation of bacterial micelles, and also the genetic manipulation of fixed gene knockout. The future research should focus on the molecular genetics of the bacteria. Studies, functional genomics, extracellular polymeric biosynthesis, bacterial micelles formation mechanism, chemical structure and properties.
【作者单位】： 中国科学院水生生物研究所;中国科学院大学;
【基金】：中国科学院知识创新工程项目(Y15103-1-401)和科普项目(KP2015A09)资助~~
【分类号】：X703;X172
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本文编号：1935451