55 エンドウの成長とブラシノステロイド生合成に対するブラシナゾールの影響

概要

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Brassinazole applied hydroponically to pea seedlings retarded the growth of roots and shoots and reduced the endogenous levels of BRs, indicating that BRs are important in the growth of shoots and roots. In shoots and roots of hydroponically grown pea seedlings, 6-deoxo-BRs involved in the late C-6 oxidation pathway are predominant. Brassinazole clearly reduced the levels of 6-deoxotyphasterol, 6-deoxocastasterone and castasterone in shoots although no accumulated BRs were found. In roots, brassinazole reduced the levels of most BRs although the levels of castasterone was very low in control and treated plants and no significant difference was recognized between them. The evidence suggests that brassinazole blocks some pathway befor 6-deoxocathasterone.
植物化学調節学会の論文
1999-10-01