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Applied and Environmental Microbiology, April 2002, p. 2089-2092, Vol. 68, No. 4
0099-2240/02/$04.00+0     DOI: 10.1128/AEM.68.4.2089-2092.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.

Propionate Formation by Opitutus terrae in Pure Culture and in Mixed Culture with a Hydrogenotrophic Methanogen and Implications for Carbon Fluxes in Anoxic Rice Paddy Soil

Kuk-Jeong Chin and Peter H. Janssen*

Max-Planck-Institut für Terrestrische Mikrobiologie, D-35043 Marburg, Germany

Received 9 October 2001/ Accepted 11 January 2002

Propionate-forming bacteria seem to be abundant in anoxic rice paddy soil, but biogeochemical investigations show that propionate is not a correspondingly important intermediate in carbon flux in this system. Mixed cultures of Opitutus terrae strain PB90-1, a representative propionate-producing bacterium from rice paddy soil, and the hydrogenotrophic Methanospirillum hungatei strain SK maintained hydrogen partial pressures similar to those in the soil. The associated shift away from propionate formation observed in these cultures helps to reconcile the disparity between microbiological and biogeochemical studies.

* Corresponding author. Present address: Department of Microbiology and Immunology, University of Melbourne, Melbourne, Victoria 3010, Australia. Phone: 61 (3) 8344 5706. Fax: 61 (3) 9347 1540. E-mail: pjanssen{at}unimelb.edu.au.

Applied and Environmental Microbiology, April 2002, p. 2089-2092, Vol. 68, No. 4
0099-2240/02/$04.00+0     DOI: 10.1128/AEM.68.4.2089-2092.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.



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  • Akasaka, H., Ueki, A., Hanada, S., Kamagata, Y., Ueki, K. (2003). Propionicimonas paludicola gen. nov., sp. nov., a novel facultatively anaerobic, Gram-positive, propionate-producing bacterium isolated from plant residue in irrigated rice-field soil. Int. J. Syst. Evol. Microbiol. 53: 1991-1998 [Abstract] [Full Text]  


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