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Salicylic acid as a signal molecule in plant-pathogen interactions
1Ciba-Geigy Corporation, Research Triangle Park.
Current Opinion in Cell Biology
|April 1, 1994
Abstract:
Significant insight has been gained in the past year into the roles of salicylic acid (SA) in plant-pathogen interactions. The ability to accumulate SA has been shown to be essential for systemic acquired resistance in tobacco plants. Further experiments have shown that SA is apparently not a systemic, vascular-mobile signal, but rather is required for signal transduction at the local level. Its mode of action may include inhibition of catalase activity, leading to increased levels of hydrogen peroxide.