Institut de Recherche en Biologie Végétale, Université de Montréal, 4101 Sherbrooke est, Montréal, Québec, Canada, H1X 2B2.
Plant Physiol. 1992 Oct;100(2):1029-32. doi: 10.1104/pp.100.2.1029.
The enzyme acetylcoenzyme A:deacetylvindoline 4-O-acetyl-transferase (DAT) catalyzes the final step in the biosynthesis of the monoterpenoid indole alkaloid, vindoline. Previous studies have shown that the appearance of DAT activity in etiolated seedlings of Catharanthus roseus is induced by exposure of seedlings to light and that enzyme activity is restricted principally to the cotyledons. Evidence is now presented that phytochrome is involved in the light-mediated induction of DAT activity in Catharanthus cotyledons.
酶乙酰辅酶 A:去乙酰长春花碱 4-O-乙酰转移酶(DAT)催化单萜吲哚生物碱长春碱生物合成的最后一步。先前的研究表明,长春花幼苗在黑暗中暴露于光下会诱导 DAT 活性的出现,并且酶活性主要局限于子叶。现在有证据表明,光敏色素参与了光介导的长春花子叶中 DAT 活性的诱导。