Molecular characterization of Fusarium poae

L. Hornok, C. Fekete, G. Giczey

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6 Citations (Scopus)

Abstract

Fusarium poae is a wide-spread cereal pathogen with the ability to produce trichothecenes. Molecular characterization of 15 geographically different strains of this fungus was performed. Electrophoretic karyotype analysis revealed the presence of five co-migrating chromosome-sized DNA molecules between 4.6 and 7.5 Mb in size; strains were uniform in this respect. On the other hand, almost all isolates contained one or two mini-chromosomes, smaller than 2.0 Mb, and marked individual differences were observed in the mini-chromosome patterns. A linear mitochondrial plasmid, 1.9 kb in size, was found in one of the strains and this plasmid showed no homology with other plasmids known in the genus Fusarium. The majority of strains harbored double-stranded RNA (dsRNA) elements with great individual differences in numbers and sizes. F. poae has a trichodiene-synthase gene with high sequence similarity (> 88 %) to the Tox5 gene of Fusarium sporotrichioides.

Original languageEnglish
Pages (from-to)23-31
Number of pages9
JournalSydowia
Volume48
Issue number1
Publication statusPublished - Dec 1 1996

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Keywords

  • Double-stranded RNA
  • Electrophoretic karyotype
  • Fusarium poae

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Plant Science

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