shift from acetoclastic to H2-dependent methanogenesis in a west Siberian peat bog at low pH values and isolation of an acidophilic Methanobacterium strain |
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Authors: | Kotsyurbenko O R Friedrich M W Simankova M V Nozhevnikova A N Golyshin P N Timmis K N Conrad R |
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Institution: | Institut für Mikrobiologie, Carolo-Wilhelmina Technische Universit?t zu Braunschweig, Biozentrum, Braunschweig, Germany. olk@helmholtz-hzi.de |
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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. |
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