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  • 翟俊,李媛媛,何孟狄,马宏璞,戴元贵.淡水系统中甲烷厌氧氧化古菌的研究进展[J].环境工程学报,2019,13(5):1009-1020.DOI:10.12030/j.cjee.201812098    [点击复制]
  • ZHAI Jun,LI Yuanyuan,HE Mengdi,MA Hongpu,DAI Yuangui.Review on the research progress of archaeal anaerobic methanotrophs in freshwater system[J].,2019,13(5):1009-1020.DOI:10.12030/j.cjee.201812098   [点击复制]
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淡水系统中甲烷厌氧氧化古菌的研究进展
翟俊1,李媛媛1,何孟狄2,马宏璞1,戴元贵1
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(1.重庆大学,三峡库区生态环境教育部重点实验室,重庆 400045;2.中国市政工程西南设计研究总院有限公司,成都 610081)
摘要:
甲烷厌氧氧化古菌(ANMEs)是甲烷厌氧氧化过程中的重要微生物种群,对自然生境甲烷削减的意义重大,目前研究多集中在海洋系统,而关于ANMEs古菌在淡水系统的研究较少,其相关作用机理和工程应用的研究也尚处于初步阶段。在综合文献及前期研究基础上,介绍了ANMEs为主线的淡水系统甲烷厌氧氧化机制,分析了ANMEs的微生物学特性及地理分布,系统梳理了ANME-2d古菌针对不同电子受体(NO3-、Fe3+、Cr6+等)的电子转移体系研究进展;指出了ANME-2d及其他ANMEs可能根据环境改变而选择不同的电子受体,其相对应的电子转移机制也不同。通过对不同电子受体下的ANME-2d及其他ANMEs在淡水系统中的作用机制进行讨论分析,可为淡水系统甲烷厌氧氧化机制和碳循环过程提供理论依据,并为在工程中应用ANMEs实现同步污染物处理和甲烷削减提供新的思路。
关键词:  淡水系统  ANMEs古菌  甲烷厌氧氧化
DOI:10.12030/j.cjee.201812098
投稿时间:2018-12-14
基金项目:国家自然科学基金资助项目51478062, 51878093国家自然科学基金资助项目(51478062, 51878093)
Review on the research progress of archaeal anaerobic methanotrophs in freshwater system
ZHAI Jun1,LI Yuanyuan1,HE Mengdi2,MA Hongpu1,DAI Yuangui1
(1.Key Laboratory of the Three Gorges Reservoir Region s Eco-Environment, Chongqing University, Chongqing 400045, China;2.Southwest Municipal Engineering Design and Research Institute of China, Chengdu 610081, China)
Abstract:
Archaeal anaerobic methanotrophs (ANMEs) are key microorganisms in the anaerobic oxidation of methane (AOM), which is of great significance in methane reduction of natural environment. The current researches mainly focused on the ocean systems, while there is little known on the ANMEs are in the freshwater systems. The studies on mechanisms and applications of AOM in the freshwater systems are also rare. On the basis of previous literatures and studies review, the mechanisms of ANME-mediated AOM in the freshwater systems were introduced, the microbial characteristics and geographic distribution were analyzed, and the progress of studies on electron transfer when ANME-2d using different electron acceptors (NO3-, Fe3+, Cr6+, etc.) was systematically reviewed. The ANME-2d, as well as other ANMEs, could select different electron acceptors depending on environment variations which were assigned to different electron-transferring mechanisms. The discussion on the mechanisms of ANME-2d and other ANMEs with different electron acceptors in the freshwater systems could provide the theorical fundament about AOM and carbon cycle in the freshwater, as well as the new insight on using ANMEs to simultaneously reduce CH4 and pollutants in the engineering application.
Key words:  freshwater system  ANMEs archaea  anaerobic oxidation of methane