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Neisseria oralis sp. nov., isolated from healthy gingival plaque and clinical samples.


ABSTRACT: A polyphasic analysis was undertaken of seven independent isolates of gram-negative cocci collected from pathological clinical samples from New York, Louisiana, Florida and Illinois and healthy subgingival plaque from a patient in Virginia, USA. The 16S rRNA gene sequence similarity among these isolates was 99.7-100?%, and the closest species with a validly published name was Neisseria lactamica (96.9?% similarity to the type strain). DNA-DNA hybridization confirmed that these isolates are of the same species and are distinct from their nearest phylogenetic neighbour, N. lactamica. Phylogenetic analysis of 16S and 23S rRNA gene sequences indicated that the novel species belongs in the genus Neisseria. The predominant cellular fatty acids were C16?:?0, summed feature 3 (C16?:?1?7c and/or iso-C15?:?0 2-OH) and C18?:?1?7c. The cellular fatty acid profile, together with other phenotypic characters, further supports the inclusion of the novel species in the genus Neisseria. The name Neisseria oralis sp. nov. (type strain 6332(T) ?=?DSM 25276(T) ?=?LMG 26725(T)) is proposed.

SUBMITTER: Wolfgang WJ 

PROVIDER: S-EPMC3709538 | BioStudies | 2013-01-01

REPOSITORIES: biostudies

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