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Applied and Environmental Microbiology, August 2006, p. 5648-5652, Vol. 72, No. 8
0099-2240/06/$08.00+0     doi:10.1128/AEM.00727-06
Copyright © 2006, American Society for Microbiology. All Rights Reserved.

SHORT REPORT

Carbon Isotope Fractionation during Acetoclastic Methanogenesis by Methanosaeta concilii in Culture and a Lake Sediment

Holger Penning,1,{dagger} Peter Claus,1 Peter Casper,2 and Ralf Conrad1*

Max Planck Institute for Terrestrial Microbiology, Karl-von-Frisch Str., 35043 Marburg, Germany,1 Leibniz Institute of Freshwater Ecology and Inland Fisheries, Department of Limnology of Stratified Lakes, 16775 Stechlin, Germany2

Received 29 March 2006/ Accepted 31 May 2006

The isotope enrichment factors ({varepsilon}) in Methanosaeta concilii and in a lake sediment, where acetate was consumed only by Methanosaeta spp., were clearly less negative than the {varepsilon} usually observed for Methanosarcina spp. The fraction of methane produced from acetate in the sediment, as determined by using stable isotope signatures, was 10 to 15% lower when the appropriate {varepsilon} of Methanosaeta spp. was used.

* Corresponding author. Mailing address: Max Planck Institute for Terrestrial Microbiology, Karl-von-Frisch Str., 35043 Marburg, Germany. Phone: 49-(0)6421-178 801. Fax: 49-(0)6421-178 809. E-mail: Conrad{at}staff.uni-marburg.de.

{dagger} Present address: Institute of Groundwater Ecology, GSF-National Research Center for Environment and Health, 85764 Neuherberg, Germany.

Applied and Environmental Microbiology, August 2006, p. 5648-5652, Vol. 72, No. 8
0099-2240/06/$08.00+0     doi:10.1128/AEM.00727-06
Copyright © 2006, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:

  • Goevert, D., Conrad, R. (2009). Effect of Substrate Concentration on Carbon Isotope Fractionation during Acetoclastic Methanogenesis by Methanosarcina barkeri and M. acetivorans and in Rice Field Soil. Appl. Environ. Microbiol. 75: 2605-2612 [Abstract] [Full Text]  


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