光形態形成および葉緑体分化におけるブラシノステロイド作用の分子機構(奨励賞,受賞業績)

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タイトル別名
  • Molecular mechanism of brassinosteroid bioactivity on photomorphogenesis and chloroplast differentiation(The JSCRP Award for the Encouragement of Young Scientists, The Society Awards Lectures)
  • [植物化学調節学会]奨励賞 光形態形成および葉緑体分化におけるブラシノステロイド作用の分子機構
  • ショクブツ カガク チョウセツ ガッカイ ショウレイショウ ヒカリ ケイタイ ケイセイ オヨビ ヨウリョクタイ ブンカ ニ オケル ブラシノステロイド サヨウ ノ ブンシ キコウ

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Chloroplast differentiation was tightly related with photomorphogenesis that based on hypocotyls elongation and cotyledon opening. At first, to analysis mechanism of chloroplast differentiation, we cloned two regulator of chloroplast genome, CND41 and PTF1. At the second, we identified that brassinosteroid deficiency in the dark with Brz, brassinosteroid biosynthesis inhibitor, caused not only the deetiolation but also the acceleration to chloroplast from etioplast after the short-term-light treatment to cotyledon that germinated in the dark with Brz. Many chloroplast genes that were encoded on the both of nuclei and plastid genome were expressed in the dark with Brz higher than the control plant without Brz. In order to analyze in detail the mechanisms of brassinosteroid signal transduction, we screened for mutants that showed longer hypocotyls than wild type when grown with Brz in the dark, and designated bil mutants (Brz-insensitive-long hypocotyl). We identified a dominant mutant bill that encoded on a novel bHLH trans-acting factor that stability was regulated by a kinase and proteasome system.

収録刊行物

  • 植物の生長調節

    植物の生長調節 42 (1), 10-18, 2007

    一般社団法人 植物化学調節学会

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