Control of Ethylene Induced Permeability of Plant Cells by a Substituted Benzothiadiazole

Abstract The permeability of bulb tissues of onion (Allium cepa L.), amaryllis (Hippeastrum hybrids), tulip (Tulipa × hybrida) and daffodil (Narcissus tazetta L.) treated with Ethephon and 5‐methyl‐7‐chloro‐4‐ethoxycarbonylmethoxy‐2,1,3‐benzothiadiazole (TH6241), to water and solutions of 1,3‐dimethylurea was determined by the plasmometric methods. Ethylene treatments promoted, while those with TH6241 generally decreased the cell membrane permeability; TH6241 negated the effects of ethylene on cell permeability.