noun[mass noun] Biology
The production of methane by bacteria or other living organisms.
- Dolomite as a possible product of bacterial methanogenesis is absent in sediments from the Marnes Bleues Formation.
- Selenoproteins are relevant to the controversy over the metabolic features of the archaeal ancestor of eukaryotes because, among archaea, they facilitate autotrophic growth and methanogenesis.
- In the marine environment, methanogenesis is restricted by competition with anaerobic sulphate-reducing bacteria, which use similar substrates.
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