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Applied and Environmental Microbiology, April 2007, p. 2344-2348, Vol. 73, No. 7
0099-2240/07/$08.00+0     doi:10.1128/AEM.02413-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.

SHORT REPORT

Shift from Acetoclastic to H2-Dependent Methanogenesis in a West Siberian Peat Bog at Low pH Values and Isolation of an Acidophilic Methanobacterium Strain{triangledown}

O. R. Kotsyurbenko,1,2,3* M. W. Friedrich,2 M. V. Simankova,3 A. N. Nozhevnikova,3 P. N. Golyshin,1,4 K. N. Timmis,1,4 and R. Conrad2

Institut für Mikrobiologie, Carolo-Wilhelmina Technische Universität zu Braunschweig, Biozentrum, Spielmannstraße 7, 38106 Braunschweig, Germany,1 Max-Planck-Institut für Terrestrische Mikrobiologie, D-35043 Marburg/Lahn, Germany,2 Institute of Microbiology, Russian Academy of Sciences, Moscow 117324, Russia,3 Helmholtz-Zentrum für Infektionsforschung GmbH, Inhoffenstraße 7, D-38124 Braunschweig, Germany4

Received 13 October 2006/ Accepted 24 January 2007

Methane production and archaeal community composition were studied in samples from an acidic peat bog incubated at different temperatures and pH values. H2-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 H2-plus-CO2-supplemented medium at pH 4.5.

* Corresponding author. Mailing address: Institut für Mikrobiologie, Carolo-Wilhelmina Technische Universität zu Braunschweig, Biozentrum, Spielmannstraße 7, 38106 Braunschweig, Germany. Phone: 49 531 391 5859. Fax: 49 531 6181 4199. E-mail: olk{at}helmholtz-hzi.de.

{triangledown} Published ahead of print on 2 February 2007.

Applied and Environmental Microbiology, April 2007, p. 2344-2348, Vol. 73, No. 7
0099-2240/07/$08.00+0     doi:10.1128/AEM.02413-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:

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