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Related to methanogen: Thermophiles


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 ?
When a hypolimnion remains anoxic, obligately anaerobic prokaryotic populations, including Archaeal methanogens, presumably increase, but a lake that never has an oxygenated hypolimnion due to salt-induced stratification likely produces more methane because conditions that favor methanogen growth are persistent.
Methanogen and sulfate-reducing abundance: Significant temporal variations in the abundance of the viable SRB and MA were recorded in the sediment.
According to Chien and Zinder (1996), nifH topology can be divided into four major clusters and that all nifH genes fall into one of four clusters: cluster I includes standard molybdenum nitrogenase from cyanobacteria and proteobacteria (alpha, beta and gamma), as well as gamma proteobacterial nfH, and cluster II includes methanogen nitrogenase and bacterial nif H.
They've also developed a vaccine injection that produces methanogen antibodies in saliva, which would then travel into the rumen.
If hydrogen sulfide SIBO is suspected the same treatments as those used for methanogen overgrowth are indicated.
Microbial Reduction of Fe(III) in Smectite Minerals by Thermophilic Methanogen Methanothermobacter thermautotrophicus.
Propionate formation by Opitutus terrae in pure culture and in mixed culture with a hydrogenotrophic methanogen and implications for carbon fluxes in anoxic rice paddy soil.
a methanol- and methylamine-reducing methanogen from the hindgut of the cockroach periplaneta americana.
Provided a methanogen inhibitor is added, these acids are the low-energy, thermodynamically driven products; therefore, there is no need to maintain aseptic operating conditions.
The archea are 80 percent efficient at conserving the electrical energy into the chemical bonds of methane, good enough that Logan and his team want to use the methanogen to store energy generated by intermittent power sources, like wind, solar or tidal energy.
Norman Pace fleshed out the field of microbial ecology, which, in turn, inspired DOE funded projects, including a joint grant to Venter and Woese to sequence a high-temperature, deep-sea methanogen.
An example is a methanogen (or acetogen) that uses H[sub.