摘要: The family Methanomicrobiaceae currently (December 2013) consists of six genera: Methanomicrobium, Methanoculleus, Methanofollis, Methanogenium, Methanolacinia, and Methanoplanus, with, respectively, 1, 9, 5, 4, 3 species (not including later subjective synonyms). This mesophilic or moderately thermophilic neutrophilic methanogens belongs to the order Methanomicrobiales. members are rod shaped irregular coccoid in shape. Cells possess a protein S-layer wall. Methanogenesis from H2/CO2 formate is major energy-generating process; some can also use primary secondary alcohols as electron donor for reduction CO2 methane. Acetate other growth factors may be required. Members have been found wide variety anaerobic environments where methane produced: rumen ruminant animals, marine sediments, wetlands, oil wells, others.