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Actinomyces dentalis sp nov., from a human dental abscess

Hall, V., Collins, M.D., Lawson, P.A., Falsen, E. and Duerden, B.I. (2005) Actinomyces dentalis sp nov., from a human dental abscess. International Journal of Systematic and Evolutionary Microbiology, 55 (1). pp. 427-431. ISSN 1466-5026

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To link to this item DOI: 10.1099/ijs.0.63376-0


A previously undescribed filamentous, beaded, Gram-positive, rod-shaped bacterium was isolated from pus of a human dental abscess. Based on its cellular morphology end the results of biochemical testing the organism was tentatively identified as a member of the genus Actinomyces, but it did not correspond to any currently recognized species of this genus. Comparative 16S rRNA gene sequencing studies showed the bacterium represents a distinct subline within the genus Actinomyces, clustering within a group of species that includes Actinomyces bovis, the type species of the genus. Sequence divergence values of >8% with other recognized species within this phylogenetic group clearly demonstrated that the organism represents a hitherto unknown species. Based on biochemical and molecular phylogenetic evidence, it is proposed that the unidentified organism recovered from a dental abscess be classified as a novel species, Actinomyces dentalis sp. nov. The type strain is R18165(T) (= CCUG 48064(T) = CIP 108337(T)).

Item Type:Article
Divisions:Life Sciences > School of Chemistry, Food and Pharmacy > Department of Food and Nutritional Sciences
ID Code:13333

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