Inhibitory Effects of Cycasin on Germination, Growth and α-Amylase Biosynthesis in Rice Plantst
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概要
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Cycasin, the toxic glycoside of cycad plants, interfered with seed germination and seedling growth of Gramineae, Crucifereae and Leguminosae. The shoots and roots of seedlings showed wilting, chlorosis and necrosis. Rice plants were most sensitive and soybean plants rather tolerant. Respiration and α-amylase activity were markedly low in the rice seedlings treated with cycasin. Both cycasin and its aglycone, methylazoxymethanol, did not inhibit the activity of α-amylase, but did suppress the formation of α-amylase in rice endosperms. Exogenous gibberellin considerably reversed the inhibition of germination and growth, and the suppression of α-amylase formation caused by these toxins.
- 社団法人 日本農芸化学会の論文
著者
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YAGI Fumio
Laboratory of Biochemistry and Nutritional Chemistry
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Tadera Kenjiro
Laboratory Of Biochemistry And Mutritional Chemistry
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Kobayashi Akira
Laboratory Of Biochemistry
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TADERA Kenjiro
Laboratory of Biochemistry and Nutritional Chemistry, Department of Agricultural Chemistry, Faculty of Agriculture, Kagoshima University
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YAGI Fumio
Laboratory of Biochemistry and Nutritional Chemistry, Department of Agricultural Chemistry, Faculty of Agriculture, Kagoshima University
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MINEMOTO Shoji
Laboratory of Biochemistry and Nutritional Chemistry, Department of Agricultural Chemistry, Faculty of Agriculture, Kagoshima University
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