Characterization of the Tomato Prosystemin Promoter: Organ-Specific Expression, Hormone Specificity and Methyl Jasmonate Responsiveness by Deletion Analysis in Transgenic Tobacco Plants Mechanism of Wound-induced Defense Response and Signal Transduction in Plants Vector Construction of Shoot-specific Promoter Driven Prosystemin and the Acquisition of Transgenic Plants Role of systemin and jasmonic acid in systemic wounding response of tomato