アブシジン酸とその生合成関連物質に関する生物有機化学的研究

概要

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(+)-Abscisic aicd (ABA), one of terpenoid plant hormons, has the important physiological activities like the abscission, the closure of stomata and the dormancy of seeds and so on. There are two biosynthetic pathways of ABA via C_15-farnesyl pyrophosphate in ABA producing fungi and C_40-carotenoids in higher plants. The authors found that a fungus of Cercospora cruenta produce a higher level of (+)-ABA and its new biosynthetic intermediates; C_15-γ-ionylideneethanol, (2Z, 4E)-4'-hydroxy-γ-ionylideneacetic acid and (2Z, 4E)-1', 4'-dihydroxy-γ-ionylideneacetic acid ABA biosynthetic pathway in C. cruenta was clarified from the incorporation of 14^C-mevalonic acid into ABA biosynthetic intermediates. Furthermore, all stereoisomers of xanthoxin, C_15-biosynthetic intermediates of ABA via C_40-carotenoid pathway in higher plants, were synthesized to examine their biological activities and their conversion into ABA in tomato plants.
植物化学調節学会の論文
1999-10-01