Responses of the First Internodes of Hong Mang Mai Wheat to Ethylene, Gibberellins and Potassium
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概要
- 論文の詳細を見る
Seedlings of Hong Mang Mai wheat (Triticum aestivum L.) emerge from much deeper in the soil than do other cultivars by elongating their first internode. We examined the roles of ethylene, gibberellins (GA) and potassium in the elongation of the first internode in wheat cultivars. Although ethylene stimulated the elongation of the first internode of Hong Mang Mai in the dark, the ethylene evolution and the expression level of ethylene-receptor-like gene of this cultivar were not greater than those of other cultivars. In Hong Mang Mai, gibberellin A_3 (GA_3) substantially stimulated the elongation of the first internode in the dark. Maximum elongation of the first internode was obtained by GA_3 at the concentrations of 2.89 × 10^<-6> to 2.89 × l0^<-7> M. This cultivar responded markedly to gibberellins A_1 and A_3 by elongating the first internode in the dark. A mixture of gibberellins A_4 and A_7 (GA_<4+7>) was not effective in inducing the elongation. Haruhikari, a cultivar having no GA -insensitive-reducing-height (Rht) genes, substantially responded to GA_3, but other cultivars did not. The differences in the sensitivity to GA could account, at least in part, for the varietal differences in the elongation of the first internode in wheat. Takune-komugi, a cultivar whose first internode elongates in response to ethylene, did not respond to GA_3. Thus, there are different mechanisms for the GA- and ethylene-stimulated elongation of the first internode in wheat. Also, it was suggested that potassium uptake from the soil might function together with endogenous GA in inducing the elongation of the first internode in Hong Mang Mai wheat.
- 日本作物学会の論文
著者
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Chen Lei
Graduate School Of Information Production And Systems Waseda University
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Chen Lei
Graduate School Of Life Sciences Tohoku University
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Takahashi Hideyuki
Graduate School Of Life Sciences Tohoku University
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Takahashi H
Graduate School Of Life Sciences Tohoku University
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HIGASHITANI Atsushi
Graduate School of Life Sciences, Tohoku University
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TAKEDA Kazuyoshi
Research Institute for Bioresources, Okayama University
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Kawae Tatsuya
Department Of Applied Science Faculty Of Engineering Kyusyu University
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Chen Lidong
Institute For Materals Research Tohoku University
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Nishizawa Takeaki
Graduate School of Life Sciences, Tohoku University
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Suge Hiroshi
Graduate School of Life Sciences, Tohoku University
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Higashitani A
Kagoshima University Graduate School Of Medical And Dental Sciences Space Environmental Medicine
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Suge H
Graduate School Of Life Sciences Tohoku University
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Higashitani Atsushi
Graduate School Of Life Sciences Tohoku Univ.
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Chen Lei
Graduate Institute Of Ferrous Technology Pohang University Of Science And Technology
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Takahashi Hideyuki
Graduate School Of Agricultural And Life Sciences The University Of Tokyo
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Nishizawa Takeaki
Graduate School Of Life Sciences Tohoku University
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Takeda Kazuyoshi
Research Institute For Bioresources Okayama University
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Higashitani Atsushi
Kagoshima University Graduate School Of Medical And Dental Sciences Space Environmental Medicine
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Takahashi Hideyuki
Graduate School Of Sciences Tohoku University
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Takeda Kazuyoshi
Research Institute Bioresource Okayama University
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