Effects of 3-Methylgibberellin Analogs on Gibberellin 3β-Hydroxylases and Plant Growth
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概要
- 論文の詳細を見る
Six 3-methylgibberellin analogs were synthesized, and their effects on the GA 3β-hydroxylases from immature seeds of Phaseolus vulgaris and Cucurbita maxima, and /or on the growth of dwarf rice (Oryza sativa L.cv.Tan-ginbozu) and cucumber (Cucumis sativus L.cv.Spacemaster) were investigated. 3-Methyl-GA_5 and 2,3-didehydro-3-methyl-GA_9 inhibited the conversion of [2,3-^3H_2]GA_9 to [2-^3H]GA_4 by GA 3β-hydroxylases from both P.vulgaris and C.maxima at 3μM and higher. Their C/D-ring-rearranged isomers, 2,3-didehydro-3-methyl-DGC and 16-deoxo-2,3-didehydro-3-methyl-DGC, inhibited 3β-hydroxylation by the enzyme from P.vulgaris threefold more strongly than the non-C/D-ring-rearranged compounds, but exhibited no effect on 3β-hydroxylation by the enzyme from C.maxima. In a dwarf rice seedling assay, 3-methyl-GA_5 and 2,3-didehydro-3-methyl-GA_9 promoted shoot elongation at doses of 300 ng/plant and higher, and 3α-methyl-GA_1 and 3α-methyl-GA_4 at doses of 30 ng/plant and higer. In contrast 2,3-didehydro-3-methyl-DGC inhibited shoot growth to half that of the control at a dose of 300 ng/plant, and 16-deoxo-2,3-didehydro-3-methyl-DGC showed no effect on growth. IN a cucumber seedling assay, 3α-methyl-GA_4 promoted hypocotyl elongation at doses of 300 ng/plant and higher. The other C-3 methyl compounds showed no effect on the hypocotyl elongation of cucumber seedlings.
- 社団法人日本農芸化学会の論文
- 1992-07-23
著者
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SAKURAI Akira
The Institute of Physical and Chemical Research
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Kamiya Y
Plant Science Center Riken
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Kamiya Y
Riken Plant Science Center
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MUROFUSHI Noboru
Department of Biotechnology, Akita Prefectural University
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Sakurai A
The Institute Of Physical And Chemical Research (riken)
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Sakurai Akira
The Inst. Of Phys. And Chem. Res.
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KAMIYA Yuji
RIKEN Plant Science Center
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Maejima Noboru
Department Of Biotechnology Akita Prefectural University
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Takahashi Nobutaka
The Institute of Physical and Chemical Research
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Kamiya Yuji
The Institute of Physical and Chemical Research
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YAMANE Hisakazu
Department of Agricultural Chemistry, The University
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Takahashi Nobtaka
Department Of Agricultural Chemistry The University Of Tokyo:(presnet Addresses) The Institute Of Ph
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SAITO Tamio
Department of Agricultural Chemistry, The University of Tokyo
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Yamane Hisakazu
Biotechnology Res. Center Univ. Of Tokyo
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Yamane Hisakazu
Department Of Agricultural Chemistry Faculty Of Agriculture The University Of Tokyo
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Murofushi Noboru
Department Of Agricultural Chemistry The University Of Tokyo
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Kamiya Y
Growth Regulation Research Group Riken Plant Science Center
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Tsuji Naoki
Department Of Clinical Laboratory Medicine Sapporo Medical University School Of Medicine
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Sakurai Akira
Fac. Sci. & Eng. Saitama Univ.
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Takahashi N
Graduate School Of Agriculture Kyoto Univ.
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Kamiya Yuji
Frontier Research Program The Institute Of Physical And Chemical Research
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Kamiya Yuji
Growth Regulation Research Group Riken Plant Science Center (psc)
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Yada H
Biotechnology Research Center University Of Tokyo
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