Methanogens produce methane via direct interspecies electron transfer (DIET), which is an important way for the recent
discovery of methane emissions in anoxic habitats. Methanobacterium is an important group of methanogens in coastal habitats, but
there is no evidence of its participation in DIET for a long time. In this review, the importance of DIET participated by methanogens to
the carbon cycle in typical coastal habitats was summarized, and the environmental conditions in typical coastal habitats that favor
Methanobacterium participating in DIET for methanogenesis were emphatically analyzed. The theoretical supports provided by domestic
and international researches on the microbiological mechanisms of methanogenesis for Methanobacterium participating in DIET mechanism
were also discussed. Future studies on the DIET mechanism of Methanobacterium in typical coastal habitats will provide theoretical
supports for accurate assessment of methane emissions in coastal ecosystems.
; 李新; 秦伟
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