ETHYLENE AS A SIGNAL MEDIATING THE WOUND RESPONSE OF TOMATO PLANTS

Plants respond to physical injury, such as that caused by foraging ins ects, by synthesizing proteins that function in general defense and ti ssue repair. In tomato plants, one class of wound-responsive genes enc odes proteinase inhibitor (pin) proteins shown to block insect feeding . Application of many different factors will induce or inhibit pin gen e expression. Ethylene is required in the transduction pathway leading from injury, and ethylene and jasmonates act together to regulate pin gene expression during the wound response.