Differences in the Sensitivity to UVB Radiation of Two Cultivars of Rice (Oryza Sativa L.) based on Observation of Long-Lived Radicals
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概要
- 論文の詳細を見る
Free radicals with a long lifetime were observed in the leaves of two rice cultivars (Oryza sativa L.), Sasanishiki (UVB resistant) and Norin-1 (UVB sensitive), by electron spin resonance spectroscopy. The leaves of both cultivars grown with visible light show very similar ESR spectra composed of radical 1 (R1) and radical 2 (R2), which may be attributable to P_700 cation radicals in the reaction center of photosystem I, and tyrosine cation radicals in the reaction center of photosystem II, respectively. The ESR spectrum composed of R1 and R2 radicals in the leaves of Sasanishiki grown under visible light with supplemental UVB was similar to that in the plant grown without supplemental UVB. On the other hand, the amount of R2 radicals in the leaves of Norin-1 grown under visible light with supplemental UVB was significantly smaller than that in the plant grown without supplemental UVB. It is suggested that the loss of R2 radicals in Norin-1 upon UVB irradiation is related to the instability of the plant.
- 日本放射線影響学会の論文
著者
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Miyazaki Tetsuo
Department of Cardiology, Jyuntendou University
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Miyazaki Tetsuo
名古屋大学 工研究
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Miyazaki Tetsuo
Department Of Applied Chemistry Graduate School Of Engineering Nagoya University
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HIDEMA Jun
Institute of Genetic Ecology, Tohoku University
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KUMAGAI Tadashi
Institute of Genetic Ecology, Tohoku University
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Hidema Jun
Graduate School Of Life Sciences Tohoku University
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Hidema Jun
Dep. Of Environmental Life Sciences Graduate School Of Life Sciences Tohoku Univ.
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Hidema Jun
Institute Of Genetic Ecology Tohoku Univ.
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KUMAGAI JUN
Department of Applied Chemistry, Graduate School of Engineering, Nagoya University,
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KATOH HIROMI
Department of Applied Chemistry, Graduate School of Engineering, Nagoya University,
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KUMAGAI Tadashi
Department of Environmental Life Sciences, Graduate School of Life Sciences, Tohoku University
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Kumagai Jun
名古屋大学 工研究
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Katoh Hiromi
Department Of Applied Chemistry Graduate School Of Engineering Nagoya University
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Kumagai Tadashi
Institute For Agricultural Research Tohoku University
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Kumagai Jun
Department Of Applied Chemistry Faculty Of Engineering Osaka University
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