突然変異体を利用したテルペノイド植物ホルモンの生物有機化学的研究(学会賞,受賞業績)

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書誌事項

タイトル別名
  • Chemical and biological studies on terpenoid plant hormones using mutants(The JSCRP Award,The Society Awards Lectures)
  • [植物化学調節]学会賞 突然変異体を利用したテルペノイド植物ホルモンの生物有機化学的研究
  • ショクブツ カガク チョウセツ ガッカイショウ トツゼン ヘンイタイ オ リヨウ シタ テルペノイド ショクブツ ホルモン ノ セイブツ ユウキ カガクテキ ケンキュウ

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説明

We have used rice and Arabidopsis mutants to study how terpenoid hormones regulate growth and development in plants. Our work in Arabidopsis has shown that gibberellins play an important role in growth responses to environmental signals, such as light and temperature. In collaboration with other research groups, we uncovered new gibberellin deactivation mechanisms, including epoxidation by a cytochrome P450 monooxygenase in rice and methylation by methyltransferases in Arabidopsis. Previous studies using shoot branching mutants of pea, Arabidopsis and rice have suggested the involvement of a new hormonal signal in inhibiting shoot branching in these species. Recently, we set out to reveal the chemical identity of this new hormone using a series of rice branching mutants. We found that strigolactones, a group of terpenoid lactones that were initially discovered as germination stimulants of root parasitic plants, act as the novel shoot branching inhibitor or its biosynthetic precursors.

収録刊行物

  • 植物の生長調節

    植物の生長調節 45 (1), 1-7, 2010

    一般社団法人 植物化学調節学会

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