Photomodulation by phytochrome of the rate of accumulation of ascorbic acid in mustard seedlings (Sinapis alba L.)

摘要: Ascorbic acid accumulation in the mustard seedling is controlled by Pfr(active phytochrome). Kinetic studies demonstrate that Pfrexerts a rapid and fully reversible control over steady state rate of ascorbic accumulation. Following terminology Weisz (1967) for this type metabolic term “photomodulation Pfr” used.—The Pfris independent RNA synthesis. Therefore regulation gene activity probably not involved photomodulation accumulation.—There only limited period within which Pfrcan This fixed time pattern “primary” differentiation seedling. There no interaction between Pfrand