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Journal of Clinical Microbiology, November 1999, p. 3443-3447, Vol. 37, No. 11
0095-1137/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.

Phenotypic and Phylogenetic Characterization of a New Corynebacterium Species from Dogs: Description of Corynebacterium auriscanis sp. nov.

Matthew D. Collins,1,* Lesley Hoyles,1 Paul A. Lawson,1 Enevold Falsen,2 Robert L. Robson,3 and Geoffrey Foster4

Department of Food Science and Technology, University of Reading, Reading RG6 6AP,1 Department of Animal and Microbial Sciences, University of Reading, Reading RG6 6AJ,3 and SAC Veterinary Science Division, Inverness, IV2 4JZ,4 United Kingdom, and Culture Collection, Department of Clinical Bacteriology, University of Göteborg, Göteborg, Sweden2

Received 24 May 1999/Returned for modification 1 July 1999/Accepted 22 July 1999

Six strains of a previously undescribed catalase-positive coryneform bacterium isolated from clinical specimens from dogs were characterized by phenotypic and molecular genetic methods. Biochemical and chemotaxonomic studies revealed that the unknown bacterium belonged to the genus Corynebacterium sensu stricto. Comparative 16S rRNA gene sequencing showed that the six strains were genealogically highly related and constitute a new subline within the genus Corynebacterium; this subline is close to but distinct from C. falsenii, C. jeikeium, and C. urealyticum. The unknown bacterium from dogs was distinguished from all currently validated Corynebacterium species by phenotypic tests including electrophoretic analysis of whole-cell proteins. On the basis of phylogenetic and phenotypic evidence, it is proposed that the unknown bacterium be classified as a new species, Corynebacterium auriscanis. The type strain of C. auriscanis is CCUG 39938T.

* Corresponding author. Mailing address: Department of Food Science and Technology, P.O. Box 226, University of Reading, Reading, RG6 6AP, United Kingdom. Phone: 44 118 9357226. Fax: 44 118 9357222. E-mail: david.collins{at}bbsrc.ac.uk.

Journal of Clinical Microbiology, November 1999, p. 3443-3447, Vol. 37, No. 11
0095-1137/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.


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