Systemic Responses Arising From Localized Heat Stimuli in Tomato Plants

Abstract
Localized application of heat to the terminal leaflet of leaf 1 of tomato (Lycopersicon esculentum) seedlings induced both propagated electrical activity and the systemic production of proteinase inhibitors. Aspirin and related compound inhibited both the propagated electrical activity and the systemic response. An electrical signal therefore remains a candidate for the systemic signal in the wound response of tomato plants