1887

Abstract

Eleven strains of anaerobic Gram-negative bacilli isolated from the human oral cavity were subjected to a comprehensive range of phenotypic and genotypic tests and were found to comprise two homogeneous groups, designated E2 and E4. 16S rRNA gene sequence analysis revealed that members of both groups belonged to the genus but were distinct from any species with validly published names. This distinction was confirmed by DNA–DNA hybridization and phenotypic tests. Two novel species are therefore proposed: sp. nov. (group E2) and (group E4). Both species are saccharolytic; the end-products of fermentation for are acetic, propionic and succinic acids, while produces acetic and succinic acids with minor amounts of isovaleric and isobutyric acids. The G+C content of the DNA of the type strain of is 51 mol% and that of is 52 mol%. The type strain for is E9.34 (=DSM 16973=CCUG 50419) and that for is E9.33 (=DSM 16972=CCUG 50418).

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2005-07-01
2024-04-19
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