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Wheat Genes Encoding Two Types of PR-1 Proteins Are Pathogen Inducible, but Do Not Respond to Activators of Systemic Acquired Resistance

January 1999 , Volume 12 , Number  1
Pages  53 - 58

Antonio Molina , Jörn Görlach , Sandra Volrath , and John Ryals

Biotechnology and Genomics Center, Novartis Crop Protection Inc., Research Triangle Park, NC 27709-2257, U.S.A.

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Accepted 4 October 1998.

Wheat cDNAs that encode proteins PR-1.1 and PR-1.2 were cloned. Deduced amino acid sequences were homologous to those of pathogen-induced, basic PR-1 proteins from plants. Although expression of PR1.1 and PR1.2 genes was induced upon infection with either compatible or incompatible isolates of the fungal pathogen Erysiphe graminis, these genes did not respond to activators of systemic acquired resistance (SAR), such as salicylic acid (SA), benzothiadiazole (BTH), or isonicotinic acid (INA)

Additional keywords: induced resistance, monocots, pathogenesis-related (PR) proteins, WCI genes.

© 1999 The American Phytopathological Society