Cell-Autonomous Recognition of the Rust Pathogen Determines Rp1 -Specified Resistance in Maize
- 8 July 1988
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 241 (4862), 208-210
- https://doi.org/10.1126/science.241.4862.208
Abstract
The Rp1 gene of maize determines resistance to the leaf rust pathogen Puccinia sorghi. X-ray treatment of heterozygous ( Rp1 Oy/rp1 oy ) maize embryos generated seedlings with yellow sectors lacking Rp1 . Yellow sectored seedlings inoculated with rust spores gave rust pustule formation in yellow ( Rp1 -lacking) sectors and hypersensitive resistance in green tissues, thereby demonstrating that the Rp1 gene product is cellautonomous in its action. In cases where the hypersensitive reaction was initiated in green ( Rp1 ) tissue next to a yellow sector, the hypersensitive response appeared to be propagated poorly, if at all, through Rp1 -lacking cells.Keywords
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