Seasonal Fluctuations in Fructan Content and Related Enzyme Activities in Yacon (Polymnia sonchifolia)
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概要
- 論文の詳細を見る
The content of fruetan and the activities of sucrose:sucrose fructan fruetosyltransferase (EC 2.4.1.99), fructan:fruetan fructosyltransferase (EC 2.4.1.100), and fructan hydrolase in each part of yacon (Polymnia sonchifolia) were determined during the growth period. During summer, the amount of fructan (g plant^<-1>) accumulated in each part was minimal despite the existence of relatively high specific activities (units mg^<-1> protein) of sucrose:sucrose fructosyltransferase and fructan: fructan fructosyltransferase in the stems, roots, tuberous roots, and rhizomataceous stem. On the other hand, from October to December, the amount of fructan in the tuberous roots and rhizomataceous stem remarkably increased along with an increase of the total activities (units plant^<-1>) of sucrose: sucrose fructosyltransferase and fructan: fructan fructosyltransferase. The specific and total activity of fructan hydrolase in each part markedly increased in September when the rapid regrowth of aerial parts after physical damage caused by strong typhoon winds was observed. In this month, the amount of fructan in the tuberous roots and rhizomataceous stem decreased. The specific and total activity of fructan hydrolase in the tuberous roots increased again in December while at the same time there was a decrease in the content of fructan and an increase in the content of fructose.
- 社団法人日本土壌肥料学会の論文
著者
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HARA YUKIHIKO
Food Research Laboratories, Mitsui Norin Co., Ltd.
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Goto Keiichi
Food Research Laboratories, Mitsui Norin Co., Ltd.
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Nanjo Fumio
Food Research Laboratories, Mitsui Norin Co., Ltd.
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Nanjo F
Mitsui Norin Co. Shizuoka Jpn
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Nanjo Fumio
Food Research Institute Mitsui Norin Co. Ltd.
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Nanjo Fumio
Food Research Laboratories Mitsui Norin Company
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Goto K
Miyazaki Univ. Miyazaki Jpn
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Goto Keiichi
Food Research Laboratories Mitsui Norin Co. Ltd.
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Hara Y
Mitsui Norin Co. Ltd. Fujieda
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Hara Yukihiko
Food Research Institute Mitsui Norin Co. Ltd.
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Fukai Katsuhiko
Food Research Laboratories Mitsui Norin Co.
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Hara Y
Kyoto Univ. Kyoto Jpn
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Ohno Sachiko
Food Research Laboratories, Mitsui Norin Co., Ltd.
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Ohno Sachiko
Food Research Laboratories Mitsui Norin Co. Ltd.
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Nanjo Fumio
Food Res. Laboratories Mitsui Norin Co. Ltd.
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Hara Yukihiko
Food Research Institute Mitsui Norin Co.
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Goto Keiichi
Food Research Institute, Mitsui Norin Co. Ltd.
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