Nitrate reductase inactivating factor from rice seedlings
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概要
- 論文の詳細を見る
A nitrate reductase inactivating factor was found in extracts of leaf blades, leaf sheaths, and roots of rice seedlings. The factor was nondialyzable, precipitable with (NH_4)_2SO_4, and heat labile. The factor from rice roots inactivated NADH nitrate reductase, FMNH_2 nitrate reductase, and NADH cytochrome c reductase from rice shoots, but had no effect on the activities of NADH diaphorase and nitrite reductase. The factors from rice shoots, rice roots, and maize roots inactivated NADH nitrate reductase prepared from cultured rice cells. The factor from cultured rice cells also inactivated rice shoot NADH nitrate reductase. The activity of the inactivating factor showed a diurnal change in shoots of rice seedlings grown with NO_3^- medium, although the fluctuation was not large compared to that of NADH nitrate reductase activity. When the seedlings were placed in darkness, the activity of the factor did not change during 20 hr with NO_3^- medium. How-ever, the activity of the factor fluctuated with NO_3^--free medium in light; its activity started to increase at the 8th hour after transfer. NADH nitrate reductase activity from rice shoots declined rapidly during the first 8 hr and gradually thereafter in both types of culture.
- 日本植物生理学会の論文
著者
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Ohira Koji
Department Of Agricultural Chemistry Faculty Of Agriculture Tohoku University
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Yamaya Tomoyuki
Department Of Agricultural Cheimistry Faculty Of Agriculture Tohoku University
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Ohira Koji
Department Of Agricultural Cheimistry Faculty Of Agriculture Tohoku University
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