Mycocin production in Trichosporon pullulans populations colonizing tree exudates in the spring

Wladyslav I. Golubev, Ilona Pfeiffer, Ellen Golubeva

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Mycocin production was demonstrated in Trichosporon pullulans, which is a dominant member of the yeast community in tree exudates released in the early spring (spring sap). Mycocin synthesis was associated with dsRNA-containing virus-like particles. Natural strains of Tr. pullulans free of dsRNA have a sensitive phenotype, and a mycocinogenic strain cured of small dsRNA becomes sensitive to its own mycocin. The mycocin studied was active against isolates from tree exudations only but not against Tr. pullulans strains isolated from other habitats. No activity was found against any other yeast species. The competitive advantage of mycocin production at the population level was exemplified by the predominance of mycocinogenic strains both in laboratory model communities and in natural populations.

Original languageEnglish
Pages (from-to)151-157
Number of pages7
JournalFEMS microbiology ecology
Volume40
Issue number2
DOIs
Publication statusPublished - Jun 19 2002

Keywords

  • Interference competition
  • Mycocinogeny
  • Tree exudate yeast community
  • Trichosporon pullulans
  • dsRNA mycovirus

ASJC Scopus subject areas

  • Microbiology
  • Ecology
  • Applied Microbiology and Biotechnology

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