Genetic Analysis of Crown Rust Resistance and Phytoalexin Production in Oats
- 72 Downloads
Antifungal compounds accumulate in resistant oat cultivars in response to crown rust infection. They are regarded as phytoalexins and are referred to as avenalumins I, 11 and III(l). Mayama et al. (2) examined the relationships between resistance gene expression and avenalumin accumulation employing 21 Pc lines. It is well known that the Pc-2 (Hv-1) gene controls susceptibility to victorin, the host-specific toxin produced by Helminthosporium victoriae. The toxin is also known to be an elicitor of avenalumin(3).
KeywordsRust Resistance Crown Rust Intercellular Hypha Phytoalexin Production Plant Path
Unable to display preview. Download preview PDF.
- 1.Mayama S, T Tani, Y Matsuura, T Ueno and H Fukami r Physiol. Plant Path. 19, 217–226, 1981.Google Scholar
- 3.Mayama S and NT Keen: Phytopathology 74, p. 850, 1984.Google Scholar
- 4.Mayama S : Mem. Fac. Agri. Kagawa Univ. 42, pp. 64, 1983Google Scholar
- 5.Day PR : Genetics of host-parasite interaction. WH Freeman Co., San Francisco, pp. 238, 1974Google Scholar
- 6.Luke HH, HC Murphy and FC Petr: Phytopathology 56, 210–212, 1966.Google Scholar
- 7.Simons MD : Mono. No. 5, Amer. Phytopath. Soc., Hefferman Press Inc., Worcester, Mass. pp. 47, 1970Google Scholar
- 8.Simons MD, FJ Zillinsky and NF Jensen: USDA ARS Publ. 34–85, pp. 22, 1966.Google Scholar