1887

Abstract

A previously undescribed, Gram-positive, catalase-negative, -like organism originating from a European beaver () was subjected to a taxonomic study. The organism displayed -haemolytic activity and gave a positive reaction with Lancefield group A antisera. Based on the results of biochemical testing, the organism was tentatively identified as a member of the genus , but it did not correspond phenotypically to any recognized species of this genus. Comparative 16S rRNA gene sequencing studies confirmed this assignment, with the bacterium forming a hitherto unknown subline within the genus. Sequence divergence values of greater than 3 % from other reference streptococcal species, however, demonstrated that the unidentified coccus-shaped organism represents a hitherto unknown species. Based on phenotypic and molecular phylogenetic evidence, it is therefore proposed that the unknown organism from a beaver be classified as a novel species, sp. nov. The type strain is M605815/03/2 (=CCUG 48115=CIP 108205).

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2005-03-01
2019-12-13
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