ABSTRACT

Methane is a greenhouse gas that contributes to global warming and paddy fields are an important source of methane emission. Methanogenic archaea and methane-oxidizing bacteria inhabiting paddy soil ecosystem play crucial roles in the methane emission from paddy fields. This literature review summarizes progress of ecological studies on methanogenic archaea and methane-oxidizing bacteria inhabiting paddy soil ecosystem from a series of investigations conducted in various paddy fields. Emphasis was placed on the isolation and identification of methanogenic archaea and methane-oxidizing bacteria, and also the composition, abundance, and dynamics of these microbial communities in paddy soil ecosystem. Some perspectives for future studies were presented on the robust stability of methanogenic archaeal community structure and the bias of methane-oxidizing bacterial isolates identified at species level, which will provide fundamental information useful for predicting, controlling, and mitigating methane emission from paddy fields.

摘要

甲烷是导致全球变暖的温室气体，稻田是甲烷排放的重要来源。栖息在稻田土壤生态系统中的产甲烷古细菌和甲烷氧化细菌在稻田甲烷排放中起着至关重要的作用。这篇文献综述总结了在不同稻田进行的一系列调查中对栖息在稻田生态系统中的产甲烷古菌和甲烷氧化细菌的生态研究进展。重点是分离和鉴定产甲烷古菌和甲烷氧化细菌，以及稻田生态系统中这些微生物群落的组成、丰度和动态。