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Ecological implications of glucosyltransferase phase variation in Streptococcus gordonii.

By M M Vickerman, D B Clewell and G W Jones

Abstract

When sucrose is provided as a substrate for glucosyltransferase (GTF), Spp+ cells of the oral bacteria Streptococcus gordonii grow embedded in an insoluble glucan mass associated with surfaces. Spp- phase variants with lower GTF activity, which either arise from or are grown with Spp+ cells, segregate preferentially as unattached cells in the culture supernatants. Conversely, Spp+ revertants preferentially accumulate on surfaces. GTF phase variation, therefore, may facilitate the dispersion of S. gordonii cells throughout the oral cavity

Topics: Research Article
Year: 1991
OAI identifier: oai:pubmedcentral.nih.gov:184028
Provided by: PubMed Central
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