Research advances in methane emission from plants.

Methane(CH4)is an important atmospheric trace gas,contributing to global warming and atmospheric redox chemistry.Traditionally,the only known biologial source of methane was a limited group of obligate anaerobic prokaryotes called methanogens.However,a recent research repoted aerobic CH4 emission from plants by an unrecognized,non-microbial mechanism.In this paper the study of methane emissions from plants was reviewed,and pointed out the directions for future research work in this field.