Methanobrevibacter Phylotypes are the Dominant Methanogens in Sheep from Venezuela - Microbial Ecology
- ️Obispo, Nestor E.
- ️Sat Dec 29 2007
Abstract
Rumen methanogens in sheep from Venezuela were examined using 16S rRNA gene libraries and denaturing gradient gel electrophoresis (DGGE) profiles prepared from pooled and individual PCR products from the rumen contents from 10 animals. A total of 104 clones were examined, revealing 14 different 16S rRNA gene sequences or phylotypes. Of the 14 phylotypes, 13 (99 of 104 clones) belonged to the genus Methanobrevibacter, indicating that the genus Methanobrevibacter is the most dominant component of methanogen populations in sheep in Venezuela. The largest group of clones (41 clones) was 97.9–98.5% similar to Methanobrevibacter gottschalkii. Two sequences were identified as possible new species, one belonging to the genus Methanobrevibacter and the other belonging to the genus Methanobacterium. DGGE analysis of the rumen contents from individual animals also revealed 14 different bands with a range of 4–9 bands per animal.
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Acknowledgments
The authors thank Dr. Mark Morrison and Dr. Chris McSweeney (CSIRO Livestock Industries, Brisbane, Australia) for their critical comments on this manuscript. Part of this research was supported by FONACIT (Project: BID-FONACIT 26231), Venezuela.
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Author notes
André-Denis G. Wright
Present address: CSIRO Livestock Industries, Queensland Bioscience Precinct, 306 Carmody Road, St. Lucia, QLD, 4067, Australia
Xuanli Ma
Present address: Faculty of Natural and Agricultural Sciences, University of Western Australia, Crawley, WA, Australia
Nestor E. Obispo
Present address: Instituto Nacional de Investigaciones Agrícolas, Apartado de Correo 4653, Maracay, Aragua, Venezuela
Authors and Affiliations
CSIRO Livestock Industries, Centre for Environment and Life Sciences, Private Bag 5, Wembley, WA, 6913, Australia
André-Denis G. Wright, Xuanli Ma & Nestor E. Obispo
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- Xuanli Ma
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Correspondence to André-Denis G. Wright.
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Wright, AD.G., Ma, X. & Obispo, N.E. Methanobrevibacter Phylotypes are the Dominant Methanogens in Sheep from Venezuela. Microb Ecol 56, 390–394 (2008). https://doi.org/10.1007/s00248-007-9351-x
Received: 31 July 2007
Revised: 14 November 2007
Accepted: 22 November 2007
Published: 29 December 2007
Issue Date: August 2008
DOI: https://doi.org/10.1007/s00248-007-9351-x