Characterization of Actinomyces isolates from infected root canals of teeth: description of Actinomyces radicidentis sp. nov.

Abstract:

:Two strains of a previously undescribed Actinomyces-like bacterium were recovered in pure culture from infected root canals of teeth. Analysis by biochemical testing and polyacrylamide gel electrophoresis of whole-cell proteins indicated that the strains closely resembled each other phenotypically but were distinct from previously described Actinomyces and Arcanobacterium species. Comparative 16S rRNA gene-sequencing studies showed the bacterium to be a hitherto unknown subline within a group of Actinomyces species which includes Actinomyces bovis, the type species of the genus. Based on phylogenetic and phenotypic evidence, we propose that the unknown bacterium isolated from human clinical specimens be classified as Actinomyces radicidentis sp. nov. The type strain of Actinomyces radicidentis is CCUG 36733.

journal_name

J Clin Microbiol

authors

Collins MD,Hoyles L,Kalfas S,Sundquist G,Monsen T,Nikolaitchouk N,Falsen E

doi

10.1128/JCM.38.9.3399-3403.2000

subject

Has Abstract

pub_date

2000-09-01 00:00:00

pages

3399-403

issue

9

eissn

0095-1137

issn

1098-660X

journal_volume

38

pub_type

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