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Corynebacterium caspium sp. nov., from a Caspian seal (Phoca caspica)

¹ School of Food Biosciences, University of Reading, Reading, UK
² SAC Veterinary Services, Inverness, UK
³ Culture Collection, Department of Clinical Bacteriology, University of Göteborg, Göteborg, Sweden

Correspondence
Matthew D. Collins
M.D.Collins{at}reading.ac.uk

A previously unknown Gram-positive, non-spore-forming, non-lipophilic, catalase-positive, irregular rod-shaped bacterium (M/106/00/5^T) was isolated, in mixed culture, from the penis of a Caspian seal (Phoca caspica). The strain was a facultative anaerobe that was able to grow at 22 and 42 °C. Comparative 16S rRNA gene sequencing showed that the organism formed a hitherto unknown subline within the genus Corynebacterium. Sequence divergence values of more than 5 % from other described Corynebacterium species, together with phenotypic differences, showed that the unidentified bacterium represents a previously unrecognized member of this genus. On the basis of phenotypic and phylogenetic considerations, it is proposed that the unknown bacterium isolated from a Caspian seal (strain M/106/00/5^T=CCUG 44566^T=CIP 107965^T) be classified as the type strain of a novel species of the genus Corynebacterium, Corynebacterium caspium sp. nov.

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of C. caspium sp. nov. M/106/00/5^T is AJ566641.

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