title: shift from acetoclastic to H2-dependent methanogenesis in a west Siberian peat bog at low pH values and isolation of an acidophilic Methanobacterium strain.
abstract: Methane production and archaeal community composition were studied in samples from an acidic peat bog incubated at different temperatures and pH values. H(2)-dependent methanogenesis increased strongly at the lowest pH, 3.8, and Methanobacteriaceae became important except for Methanomicrobiaceae and Methanosarcinaceae. An acidophilic and psychrotolerant Methanobacterium sp. was isolated using H(2)-plus-CO(2)-supplemented medium at pH 4.5.
authors.affiliation: Institut für Mikrobiologie, Carolo-Wilhelmina Technische Universität zu Braunschweig, Biozentrum, Braunschweig, Germany. olk@helmholtz-hzi.de
authors.forename: O R
authors.initials: OR
authors.lastname: Kotsyurbenko
authors.forename: M W
authors.initials: MW
authors.lastname: Friedrich
authors.forename: M V
authors.initials: MV
authors.lastname: Simankova
authors.forename: A N
authors.initials: AN
authors.lastname: Nozhevnikova
authors.forename: P N
authors.initials: PN
authors.lastname: Golyshin
authors.forename: K N
authors.initials: KN
authors.lastname: Timmis
authors.forename: R
authors.initials: R
authors.lastname: Conrad
mesh_terms: D000085:Acetates / Q000378:metabolism; D002245:Carbon Dioxide / Q000378:metabolism; D006863:Hydrogen-Ion Concentration; D008697:Methane / Q000378:metabolism*; D017014:Methanobacterium / Q000378:metabolism*; D012988:Soil Microbiology; D013696:Temperature; D053833:Wetlands
chemical_list: D000085:Acetates; D002245:Carbon Dioxide; D008697:Methane