Federación de Cafeteros, Laboratorio de Investigaciones, Apartado Aéreo 3938, Bogotá, Colombia.
INDUCTION OF PHOSPHOLIPASE ACTIVITY IN THE HYPERSENSITIVE RESPONSE OF WHEAT
Article first published online: 28 APR 2006
Volume 107, Issue 4, pages 709–714, December 1987
How to Cite
OCAMPO, C. A. and GRAMBOW, H. J. (1987), INDUCTION OF PHOSPHOLIPASE ACTIVITY IN THE HYPERSENSITIVE RESPONSE OF WHEAT. New Phytologist, 107: 709–714. doi: 10.1111/j.1469-8137.1987.tb00908.x
- Issue published online: 28 APR 2006
- Article first published online: 28 APR 2006
- (Accepted 24 July 1987)
- hypersensitive response;
- rust fungi
Phospholipase activity, probably C-type, increased when cultivars of wheat were infected in incompatible, but not in compatible, combinations with wheat stem rust (Puccinia graminis Pers. f. sp. tritici Eriks. & Henn) or with the non-pathogenic crown rust of barley (P. coronata Cda. f. sp. avenae Fraser & Led.)- The effect was mimicked when an elicitor fraction isolated from germ tubes of the wheat stem rust was injected into leaves. The increase in phospholipase activity correlated with the hypersensitive response of leaves when infected with incompatible rust fungi or treated with fungal elicitor. This effect was not observed in healthy or in water-injected control plants. The results suggest that membrane degradation is involved in the hypersensitive response.