Broad-spectrum mildew resistance in Arabidopsis thaliana mediated by RPW8

Creative Commons License

Xiao S., Ellwood S., Calis Ö., Patrick E., Li T., Coleman M., ...More

Science, vol.291, no.5501, pp.118-120, 2001 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 291 Issue: 5501
  • Publication Date: 2001
  • Doi Number: 10.1126/science.291.5501.118
  • Journal Name: Science
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.118-120
  • Akdeniz University Affiliated: No


Plant disease resistance (R) genes control the recognition of specific pathogens and activate subsequent defense responses. We show that the Arabidopsis thaliana locus RESISTANCE TO POWDERY MILDEW8 (RPW8) contains two naturally polymorphic, dominant R genes, RPW8. 1 and RPW8.2, which individually control resistance to a broad range of powdery mildew pathogens. Although the predicted RPW8.1 and RPW8.2 proteins are different from the previously characterized R proteins, they induce localized, salicylic acid-dependent defenses similar to those induced by R genes that control specific resistance. Apparently, broad-spectrum resistance mediated by RPW8 uses the same mechanisms as specific resistance.