B-17 光屈性刺激は内生、外生いずれのIAAの横移動も引き起こさない

概要

論文の詳細を見る
The beautiful Cholodny-Went theory that had held for decades, based on the lateral translocation, from light to shaded side, of auxin within the tip of seedlings, is it true? To solve the question, a direct examination and repetition of Boysen-Jensen's classical experiment and the experiment on the migration of radiolabeled auxin performed by Pickard and Thimann were performed. Even if oat coleoptile tips were divided with mica perpendicularly to light, the coleoptiles showed the same bending as the coleoptiles divided parallel with mica. When a unilateral blue light dose corresponding to the first-or second-positive curvature was administered, the radioactivity recovered in the basal agar blocks was equal in the lighted and shaded sides both in the curvatures. All these data indicate that any phototropic stimulation does not induce uneven distribution of endogenous or exogenously applied IAA in the lighted and shaded sides, suggesting that phototropic curvature is not explained by the Cholodny-Went theory.
植物化学調節学会の論文
1998-10-01