Seventy-three strains of streptococci were isolated from the bat oral cavity. The colonies of strains grown on mitis salivarius agar were similar in morphology to those of mutans-like streptococci. The novel strains were analysed biochemically using the Rapid ID32 Strep microsystem and were subjected to DNA–DNA hybridization with other oral streptococci and to 16S rRNA gene sequence analysis. Based on phylogenetic and phenotypic evidence, it is proposed that these isolates be classified as sp. nov. The type strain of sp. nov. is NUM 1303 (=JCM 14596=DSM 18963).


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Phylogenetic trees (neighbour-joining and maximum-parsimony) derived from 16S rRNA gene sequences of streptococci closely related to strain NUM 1303 . [ PDF] (260 KB)


DNA-DNA hybridization between the five novel isolates and mutans streptococci. [ PDF] (24 KB)


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