Suppression of Quantum Yield of Photosystem II by Hyperosmotic Stress in Chlamydomonas reinhardtii : ENVIRONMENTAL AND STRESS RESPONSES
スポンサーリンク
概要
- 論文の詳細を見る
Addition of ethylene glycol (EG) or NaCl to cells of Chlamydomonas reinhardtii induced transient non-photochemical quenching of Chl fluorescence correlated with the inhibition of photosynthetic oxygen evolution. The induction of the quenching and subsequent recovery proceeded not only in the light but also in the dark. The quenching was almost unaffected by the protonophore nigericin, suggesting the involvement of a type of non-photochemical quenching attributable to a state 2 transition. Higher concentrations of EG or NaCl caused a delay of the recovery of the maximum fluorescence yield (Fm'). Dark reduction rate of P700^+ after the application of a flash light in the presence of DCMU was enhanced by the hyperosmotic shock, suggesting a stimulated reduction of the intersystem electron carriers. It is proposed that the osmotic stress stimulates electron donation from stromal components via the NAD(P)H dehydrogenase, which results in the reduction of the intersystem chain and triggering of a state 2 transition leading to stimulated cyclic PSI activity.
- 日本植物生理学会の論文
著者
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Asada Kozi
Dept. Biotech Fac. Engin. Fukuyama Univ.
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Asada K
The Research Institute For Food Science Kyoto University
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ENDO Tsuyoshi
Kyoto Univ.Food Sci.
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SCHREIBER Ulrich
Wurzburg Univ.
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Endo Tsuyoshi
The Research Institute for Food Science, Kyoto University
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Schreiber Ulrich
Lahrstuhl Botanik I, Universitat Wurzburg
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Asada Kozi
The Research Institute for Food Science, Kyoto University
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Asada Kozi
The Research Institute For Food Science Kyoto University:(present)department Of Biotechnology Facult
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Endo Tsuyoshi
Department Of Bioresource Science Obihiro University Of Agriculture And Veterinary Medicine
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Endo Tsuyoshi
The Research Institute For Food Science Kyoto University
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Schreiber U
Univ. Wuerzburg Wuerzburg Deu
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Schreiber Ulrich
Julius-von-sachs-institut Fur Biowissenschaften Mit Botanischen Garten Der Universitat Wurzburg
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Endo Tsuyoshi
Division Of Applied Life Sciences Graduae School Of Agriculture
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Asada K
Dept. Biotech Fac. Engin. Fukuyama Univ.
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Asada Kozi
The Research Institute For Food Science Kyoto Niversity
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Endo T
Graduate School Of Biostudies Kyoto University
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Asada Kozi
The Research Institulefor Fbod Science Kyoto University
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