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Incidence and Characterization of Anti-microbial Effects Produced by Actinomyces viscosus and Actinomyces naeslundii

Department of Microbiology, University of Otago, Dunedin, New Zealand

J.R. Tagg

Department of Microbiology, University of Otago, Dunedin, New Zealand

Sixty-two facultative Actinomyces strains isolated from dental plaque were tested for the production of bacteriocin-like inhibitory effects by a deferred antagonism method. When incubated anaerobically, all isolates produced identical inhibitory patterns against 15 indicator organisms, but under microaerophilic conditions, little inhibitory activity was observed. Activity was not evident after anaerobic incubation on a medium buffered by 0.5% (wlv) calcium carbonate. Gas-liquid chromatographic analyses of agar blocks removed from the inhibitory zones indicated that, compared with microaerophilic conditions, anaerobic incubation encouraged production of high concentrations of lactic and succinic acids, and the concomitant fall in the pH was probably responsible for the inhibitory effects.

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Journal of Dental Research, Vol. 65, No. 2, 109-112 (1986)
DOI: 10.1177/00220345860650020201


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This Article Abstract Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via Google Scholar Citing Articles via Scopus Google Scholar Articles by Tompkins, G.R. Articles by Tagg, J.R. Search for Related Content PubMed PubMed Citation Articles by Tompkins, G.R. Articles by Tagg, J.R. Social Bookmarking                         What's this?