A Step in the Biosynthesis of Gibberellins that Is Controlled by the Mutation in the Semi-Dwarf Rice Cultivar Tan-Ginbozu
スポンサーリンク
概要
- 論文の詳細を見る
Genetic analysis and a comparison of endogenous levels of gibberellins between the semi-dwarf rice cultivar Tan-ginbozu and the corresponding normal cultivar Ginbozu have confirmed that Tan-ginbozu is a gibberellin-deficient mutant and that the semi-dwarfism of Tan-ginbozu is controlled by a single recessive gene. A step in the biosynthesis of gibberellins that is blocked by the mutation in Tan-ginbozu had been considered to be the synthesis of ent-kaurene or an earlier step. However, the rate of production of ent-kaurene by Tan-ginbozu was almost the same as that by Ginbozu. By contrast, accumulation of only a small amount of ent-kaurene was detected in Tan-ginbozu, and the amount that accumulated was similar to that in Ginbozu that had been treated with 6.9 × 10^<-8> M uniconazole-P (an effective inhibitor of three oxidative steps in the pathway from ent-kaurene to ent-kaurenoic acid via ent-kaurenol and ent-kaurenal). The height of the treated Ginbozu plants was reduced to the same as that of Tan-ginbozu plants. Resembling Tan-ginbozu plants, Ginbozu plants that had been treated with uniconazole-P responded well to ent-kaurenoic acid and slightly to ent-kaurene and ent-kaurenol. Since the growth-promoting activity of ent-kaurenal in Tan-ginbozu was similar to that of ent-kaurene, our results suggest that the mutation in Tan-ginbozu blocks the three oxidative steps whereby ent-kaurene is converted to ent-kaurenoic acid.
- 日本植物生理学会の論文
著者
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YAMANE Hisakazu
Biotechnology Research Center, The University of Tokyo
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OMORI TOSHIO
Biotechnology Research Center, The University of Tokyo
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MUROFUSHI Noboru
Faculty of Bioresource Sciences, Akita Prefectural University
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Toyomasu Tomonobu
Department of Bioresource Engineering, Yamagata University
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MUROFUSHI Noboru
Department of Biotechnology, Akita Prefectural University
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Omori Toshio
Biotechnoiogy Researchcenter The University Of Tokyo
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Ikeda Ryoichi
National Agriculture Research Center Ministry Of Agriculture Forestry And Fishery
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Ikeda Ryoichi
National Agriculture Research Center
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Maejima Noboru
Department Of Biotechnology Akita Prefectural University
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Yamane Hisakazu
Biotechnology Res. Center The Univ. Of Tokyo
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Yamane Hisakazu
Biotechnology Res. Center Univ. Of Tokyo
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Yamane Hisakazu
Biotech. Res. Ctr. The Univ. Of Tokyo
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Morimoto Yasuyuki
National Agriculture Research Center Ministry Of Agriculture Forestry And Fishery
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Ogawa Shoko
Biotechnoiogy ResearchCenter, The University of Tokyo
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Nishimura Yasuhiko
Biotechnoiogy ResearchCenter, The University of Tokyo
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Murofushi Noboru
Faculty Of Bioresource Sciences Akita Prefectural University
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Murofushi Noboru
Department Of Agricultural Chemistry The University Of Tokyo
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Toyomasu Tomonobu
Department Of Applied Biological Chemistry The University Of Tokyo:(present Address)department Of Bi
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Ogawa Shoko
Biotechnoiogy Researchcenter The University Of Tokyo
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Toyomasu T
Department Of Bioresource Engineering Yamagata University
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Nishimura Yasuhiko
Biotechnoiogy Researchcenter The University Of Tokyo
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Yada H
Biotechnology Research Center University Of Tokyo
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YAMANE Hisakazu
Biotech. Res. Ctr. , The Univ. of Tokyo
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