Involvement of Norepinephrine in the Production of a Flower-Inducing Substance in the Water Extract of Lemna
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概要
- 論文の詳細を見る
A flower-inducing substance (FIS) is produced by incubation of the pellet of centrifuged homogenates of Lemna paucicostata 441 (P441) with commercial enzyme preparations such as catalase, cellulase, lipase and proteinase K. The active component in these preparations was identified as tyrosine. The tyrosine metabolites, dopa, dopamine, norepinephrine (NE) and epinephrine, were also effective for the production of FIS, and NE the most effective. Addition of only 1μg NE to the pellet obtained from 100 mg fresh weight of P441 produced FIS without incubation. NE added to the pellet heated after resuspension also produced FIS but that added to the pellet resuspended in boiling water immediately after separation did not. A heat-stable substance(s) produced by a heat-unstable reaction in the pellet may react with NE to produce FIS or interact with NE to induce flowering. About 400 ng per g fresh weight of NE was detected in the water extract of P441 plants, but only about 0.5 ng in the hot-acidic water extract of the plants, which suggests that most of the NE was produced after homogenization.
- 日本植物生理学会の論文
著者
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Shinozaki Masateru
Laboratory Of Applied Botany Faculty Of Agriculture Kyoto University
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Kaihara Sumiko
Laboratory Of Applied Botany Faculty Of Agriculture Kyoto University
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Takimoto Atsushi
Laboratory Of Applied Botany Faculty Of Agriculture Kyoto University
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Takimoto Atsushi
Laboratory Of Applied Botany Faculty Of Agriculture
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Miura Junkichi
Naka Works, Hitachi Ltd.
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Miura Junkichi
Naka Works Hitachi Ltd.
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Takimoto Atsushi
Laboratory of Applied Botany, Faculty of Agriculture, Kyoto University
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