(redirected from Methanogens)
Also found in: Thesaurus, Medical, Encyclopedia.


Any of various anaerobic archaea that produce methane as a metabolic byproduct.


(mɛˈθæn ə dʒən, -ˌdʒɛn)

any of a group of archaebacteria that occur in diverse anaerobic environments and are capable of producing methane from a limited number of chemical sources, as carbon dioxide and hydrogen.
meth•an`o•gen′ic, adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.methanogen - archaebacteria found in anaerobic environments such as animal intestinal tracts or sediments or sewage and capable of producing methane; a source of natural gas
archaebacteria, archaebacterium, archaeobacteria, archeobacteria - considered ancient life forms that evolved separately from bacteria and blue-green algae
References in periodicals archive ?
We conclude that some of the CH4 (methane) detected in the plume of Enceladus might, in principle, be produced by methanogens," the researchers in Germany and Austria wrote.
It has been suggested that depending on type and dose, CT may directly inhibit the growth of methanogens in the rumen [9].
The Effect of Road Salt Runoff on Lake Methanogens and Methane.
Simple substrates such as methanol, mono-, bi- and trimethylamine are important to methanogens, while SRB are capable of degrading more complex substances (Lyimo et al.
Methane gas is emitted from paddy soil under anaerobic conditions mediated by methanogens (Pramanik and Kim 2013).
According to Athol Klieve, a microbiologist at the University of Queensland, the aim would be to replace bacteria called methanogens that break down plant matter in cattle guts with a different type of bacteria called reductive acetogens.
Among the groups of hydrogenotrophs are methanogens (producing methane), acetogens (producing acetate), and sulfate reducing bacteria (producing [H.
Activity and diversity of methanogens in a petroleum hydrocarbon-contaminated aquifer.
Methanogens can live in other oxygen-starved environments, such as the bottom of lakes.
Collaborating with 140 researchers from 73 institutions worldwide, the AgResearch-led project found similar bacteria and methanogens dominated in almost all rumens (the foregut of ruminant animals) across a wide variety of species and animal diets.
The reasons for above observations may be: first, microbial activities would have improved after returning manure and crop residues into the soil due to the carbon (C) supplements source and energy for microbial activities to accelerate consumption of soil oxygen and decrease of soil redox potential (Eh); second, methanogens became active due to the large quantities of C source, which provided reactive substrate for C[H.