Effect of malformin on phytochrome reactions in Vigna and Avena

概要

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The rate of destruction of the far red absorbing form of phytochrome (Pfr) in green or etiolated cuttings of Vigna radiata was slower in the presence of malformin than in its absence. Malformin had no effect on the accumulation of total phytochrome in the dark, or on the reaccumulation of phytochrome after destruction in red light. The amount of photoconversion of the red absorbing form of phytochrome (Pr) to Pfr or Pfr to Pr by given doses of red or far red radiation was slightly but consistently less in malformin-treated cuttings of V. radiata than in controls. Malformin had no effect on the rate of destruction or photoconversion of phytochrome in etiolated shoots of Avena sativa. The decrease in destruction rate of Pfr by malformin in V. radiata may con-tribute to the inhibition of dark abscission by malformin after light treatment.
日本植物生理学会の論文