Gain of virulence caused by insertion of a Pot3 transposon in a Magnaporthe grisea avirulence gene

S. Kang, M. H. Lebrun, L. Farrall, B. Valent

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The avirulence gene AVR-Pita in Magnaporthe grisea prevents the fungus from infecting rice cultivars carrying the disease resistance gene Pi-ta. Insertion of Pot3 transposon into the promoter of AVR-Pita caused the gain of virulence toward Yashiro-mochi, a rice cultivar containing Pi-ta, which demonstrated the ability of Pot3 to move within the M. grisea genome. The appearance of Pot3 in M. grisea seems to predate the diversification of various host-specific forms of the fungus.

Original languageEnglish (US)
Pages (from-to)671-674
Number of pages4
JournalMolecular Plant-Microbe Interactions
Issue number5
StatePublished - Jan 1 2001


All Science Journal Classification (ASJC) codes

  • Physiology
  • Agronomy and Crop Science

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