58 コムギ幼葉鞘の伸長はブラシノライドにより促進されブラシナゾールにより抑制される

概要

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To study a physiological role of brassinosteroids(BRs) in wheat (Triticum aestivum L.) effects of brassinolide(BL) and brassinazole(BRZ) application were studied. A coleoptile growth was markedly promoted by BL treatment. BRZ inhibited the coleoptile growth and this inhibition was rescued by BL application. These results suggested clearly that wheat coleoptile elongates by BL application. Such coleoptile responses to BL application of some semi-dwarf line of whet were examined, however, no line showing notably higher response than normal was observed. Endogenous BRs in young wheat shoot (8 days after imbibition) were surveyed and BRs on late C-6 oxidation pathway were identified. In BRZ treated wheat, the level of 6-deoxocastasterone was 4 times lower than non-treated wheat, however, other BRs levels were not clearly affected.
植物化学調節学会の論文
1999-10-01