42. ジャスモメート(PDJ : n-propyl dihydrojasmonate)の植物代謝

概要

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PDJ(prohydrojasmon) is a newly launched plant growth regulator, which has jasmonic acid activity. We report here the uptake, translocation and metabolism of PDJ in plant. PDJ is metabolized in grape rapidly with hydroxylation of the pentyl sidechain and the cyclopentanone moiety and hydrolysis of the ester to give 5'-OH-PDJ and 4 or 5, 1'〜5'-diOH-deH-DJA (DJA : dihydrojasmonic acid) as main metabolites. The metabolites are subsequently conjugated with glucose or malonic acid. One main metabolite in rice is 4' or 5'-OH-DJA, which is thought to be a intermediate in the formations of malonic acid conjugation from 5'-OH-PDJ and of 4 or 5, 1'〜5'-diOH-deH-DJA from DJA in grape. 4' or 5'-OH-DJA can be included in the metabolites in grape, therefore, the metabolic pathway in grape and in paddy rice is identical.
植物化学調節学会の論文
2004-10-13