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Int J Syst Evol Microbiol 58 (2008), 1393-1397; DOI  10.1099/ijs.0.65259-0
© 2008 International Union of Microbiological Societies

Ruminococcus gauvreauii sp. nov., a glycopeptide-resistant species isolated from a human faecal specimen

M.-C. Domingo1,2, A. Huletsky1,2, M. Boissinot1,2, K. A. Bernard3,4, F. J. Picard1,2 and M. G. Bergeron1,2

1 Centre de Recherche en Infectiologie de l'Université Laval, CHUQ, Pavillon CHUL, 2705 boul. Laurier, Québec, QC, G1V 4G2, Canada
2 Division de Microbiologie, Faculté de Médecine, Université Laval, Québec, QC, Canada
3 National Microbiology Laboratory, Health Canada H5040-1015 Arlington St, Winnipeg, MB, Canada
4 Department of Medical Microbiology, University of Manitoba, Winnipeg, MB, Canada

Correspondence
M. G. Bergeron
michel.g.bergeron{at}crchul.ulaval.ca

A novel strictly anaerobic, vancomycin-resistant, Gram-positive coccus (strain CCRI-16110T) was isolated from a human faecal specimen. This strain was characterized using morphological, biochemical and molecular taxonomic methods. The organism was unable to hydrolyse aesculin and failed to produce acid from cellobiose, D-lactose and {alpha}-raffinose. Acetic acid was the sole product of glucose fermentation by the organism. On the basis of 16S rRNA and tuf gene sequence comparison, strain CCRI-16110T was most closely related to species of the genus Ruminococcus and formed a hitherto unknown sublineage within the Clostridium coccoides rRNA cluster of organisms (cluster XIVa). Based on phenotypic and phylogenetic evidence, a novel species, Ruminococcus gauvreauii sp. nov., is proposed. The type strain is CCRI-16110T (=NML 060141T =CCUG 54292T =JCM 14987T).

Abbreviations: DMA, dimethyl acetal; FF, formate–fumarate; MIC, minimal inhibitory concentration

The GenBank/EMBL/DDBJ accession numbers for the 16S rRNA and tuf gene sequences of strain CCRI-16110T are EF529620 and EF529615, respectively.

Phylogenetic trees based on the 16S rRNA gene sequences constructed using the neighbour-joining and maximum-parsimony algorithms are available as supplementary material with the online version of this paper.






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