Physiological and ultrastructural characterization of a new Bacteroides species (Bacteroides capillus) isolated from severe localized periodontitis

K. S. Kornman, S. C. Holt

Research output: Contribution to journalArticle

23 Scopus citations

Abstract

Strains of a new Bacteroides species were isolated from three cases of severe localized periodontitis in adults, in which the organism comprised greater than 50 % of the cultivable subgingival flora. The isolates were Gram‐negative, obligately anaerobic short rods, which required CO2 for growth. The strains were esculin‐positive, oxidase– and gelatinase‐negative, and produced acid from a variety of carbohydrates, including arabinose, xylose, raffinose, rhamnose, and cellobiose. The major acid end–products from glucose were acetic and succinic acids. The isolates all possessed an extra‐layer external to the outer membrane, as well as an extensive fibrous or hair‐like network of intensely staining, ruthenium red, and malachite green material, indicative of a glycolipid or a glycolipoprotein polymer. The physiological and ultrastructural observations are discussed in relation to other known bacteroides and show these isolates to be representative of a new Bacteroides species named Bacteroides capillus.

Original languageEnglish (US)
Pages (from-to)542-555
Number of pages14
JournalJournal of Periodontal Research
Volume16
Issue number5
DOIs
StatePublished - Oct 1981
Externally publishedYes

ASJC Scopus subject areas

  • Periodontics

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