63.傷害応答時におけるジャスモン酸の代謝および移動に関する研究(口頭発表)

概要

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Plants respond to wounding and herbivore attack with a series of defense responses, which are put in motions locally and systemically. When the plants are suffered from wounding stress, a mobile signal is translocated from wounded sites to undamaged distal sites. This phenomenon is classified as wound-induced systemic acquired resistance (WSR). The key compound involved in this systemic signal transduction is supposed to be JA or its derivatives. Based on the kinetic study of the accumulation of JA and its derivatives responding to wounding stress, it was uncovered that JA was accumulated in undamaged systemic tissues within 0.5h after wounding and then, metabolized to JA-Ile, tuberonic acid (12-OH JA), and tuberonic acid glucoside. Attempts to recover deuterium and radio isotope labeled JA, which were fed to wounding leaves, were successfully accomplished. Therefore, it was demonstrated that JA could be transported from the damaged site to the systemic leaves.
植物化学調節学会の論文
2008-10-06