title: Emission of methane by Eudrilus eugeniae and other earthworms from Brazil.
abstract: Earthworms emit denitrification-derived nitrous oxide and fermentation-derived molecular hydrogen. The present study demonstrated that the earthworm Eudrilus eugeniae, obtained in Brazil, emitted methane. Other worms displayed a lesser or no capacity to emit methane. Gene and transcript analyses of mcrA (encoding the alpha subunit of methyl-CoM reductase) in gut contents of E. eugeniae suggested that Methanosarcinaceae, Methanobacteriaceae, and Methanomicrobiaceae might be associated with this emission.
authors.affiliation: Department of Ecological Microbiology, University of Bayreuth, Bayreuth, Germany.
authors.forename: Peter S
authors.initials: PS
authors.lastname: Depkat-Jakob
authors.forename: Sindy
authors.initials: S
authors.lastname: Hunger
authors.forename: Kristin
authors.initials: K
authors.lastname: Schulz
authors.forename: George G
authors.initials: GG
authors.lastname: Brown
authors.forename: Siu M
authors.initials: SM
authors.lastname: Tsai
authors.forename: Harold L
authors.initials: HL
authors.lastname: Drake
mesh_terms: D000818:Animals; D001938:Brazil; D019641:DNA, Archaeal / Q000737:chemistry / Q000235:genetics; D041981:Gastrointestinal Tract / Q000382:microbiology; D008697:Methane / Q000378:metabolism*; D017013:Methanobacteriaceae / Q000235:genetics; D019638:Methanomicrobiaceae / Q000235:genetics; D017019:Methanosarcinaceae / Q000235:genetics; D008969:Molecular Sequence Data; D009835:Oligochaeta / Q000378:metabolism*; D010088:Oxidoreductases / Q000235:genetics; D017422:Sequence Analysis, DNA
chemical_list: D019641:DNA, Archaeal; D010088:Oxidoreductases; C021572:methyl coenzyme M reductase; D008697:Methane