|本期目录/Table of Contents|

[1]周 婷 余林鹏 符 力** 周顺桂.微生物直接电子传递:甲烷代谢古菌研究进展*[J].应用与环境生物学报,2018,24(05):1-12.[doi:10.3724/SP.J.1145.2017.11017]
 ZHOU Ting,Yu Linpeng,FU Li**,et al.Microbial direct electron transfer: advances in study on archaea responsible for metabolism of methane*[J].Chinese Journal of Applied & Environmental Biology,2018,24(05):1-12.[doi:10.3724/SP.J.1145.2017.11017]
点击复制

微生物直接电子传递:甲烷代谢古菌研究进展*()
分享到:

《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
24卷
期数:
2018年05期
页码:
1-12
栏目:
综 述
出版日期:
2018-10-25

文章信息/Info

Title:
Microbial direct electron transfer: advances in study on archaea responsible for metabolism of methane*
文章编号:
201711017
作者:
周 婷 余林鹏 符 力** 周顺桂
福建农林大学资源与环境学院 福州 350002
Author(s):
ZHOU Ting Yu Linpeng FU Li** ZHOU Shungui
College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
关键词:
直接电子传递互营产甲烷电能无机自养产甲烷厌氧甲烷氧化
Keywords:
direct electron transfer (DET) syntrophic methanogenesis electromethanogenesis anaerobic methane oxidation
DOI:
10.3724/SP.J.1145.2017.11017
摘要:
甲烷是重要的温室气体,同时也是广泛的可再生能源。深刻认识甲烷代谢过程中的微观机理可为人类实现甲烷的减排及其作为能源的合理利用打下坚实的理论基础。古菌介导的直接电子传递(DET)作为甲烷代谢的重要途径,已成为近年来环境微生物领域的研究热点。本文对互营氧化产甲烷、电能无机自养产甲烷以及厌氧甲烷氧化3个过程中能够参与DET的微生物进行综述,着重阐述了其发生机理。DET既存在于甲烷合成代谢,又涉及厌氧甲烷氧化。前者根据电子来源的不同,可分为微生物种间DET产甲烷和电能无机自养产甲烷两种类型。后者则是甲烷氧化古菌将甲烷氧化产生的电子传递至胞外受体。在甲烷合成代谢过程中,产甲烷菌主要通过互营细菌外膜细胞色素蛋白、菌毛或导电性固体3种方式进行电子的直接吸收。相反,甲烷氧化古菌可通过外膜细胞色素蛋白将电子传递至胞外固体或微生物。今后对于古菌介导的DET研究将集中在甲烷代谢生物电子传递链的各个组成部分及其与细菌之间的相互作用,以便将DET机制用于实际问题的解决。图5表1参93
Abstract:
Methane is an inportant greenhouse gas and also a widespread renewable biomass energy. Deep understanding of ?microscopic mechanism during the process of methane metabolism can provide a solid theoretical basis for realizing the reduction of methane emission and rational use as a source of enengy. As an important pathway, direct electron transfer (DET) of archaeal methane metabolism has recently become a research hotspot in environmental microbiology, In?this?paper,??microbes participating in DET during the process of syntrophic methanogenesis, electromethanogenesis and anaerobic methane oxidation are?briefly?reviewed?with an special emphasis?to the?mechanisms. DET has been demonstrated to be involved in both methanogenesis and anaerobic oxidation of methane. The former can be classified into two categories according to the electron sources, i.e. syntrophic methanogenesis and electromethanogenesis, whereas the latter one oxidizes methane with electrons transferred from archaea to the extracellular receptor. During the process of methanogenesis, methanogenic archaea can directly accept extracellular electrons via cytochrome proteins, pili of the parter bacteria or conductive solids. By contrast, methanotrophic archaea uses outer membrane cytochrome proteins to donate electrons to extracellular solid or microbes. These processes involve direct electron flow into methanogenic archaea or from methanotrophic archaea. In the future, the study of DET mediated by archaea will focus on the components of electron transport chain of microbes metabolizing methane and the interaction between archaea and bacteria, so that the DET mechanism can be used to solve the practical problems.

备注/Memo

备注/Memo:
收稿日期: 2017-11-10 接受日期: 2017-12-29
*国家自然科学基金项目(41601241)和福建省教育基金项目(JAT160159)资助
**通讯作者(E-mail: fulingyu2006@126.com)
点击摘要页题目后的“PDF”可下载阅读全文;本文为已录用的作者修定稿,尚未经编辑全面修改。
引用本文请注明出处本刊;发表刊期和页码将以正式出版时的安排为准,但DOI确定不变。
更新日期/Last Update: 2018-03-19