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https://hdl.handle.net/20.500.14094/90006117
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2024-04-19
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90006117 (fulltext)
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メタデータID
90006117
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open access
出版タイプ
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タイトル
Responses of the Photosynthetic Electron Transport Reactions Stimulate the Oxidation of the Reaction Center Chlorophyll of Photosystem I, P700, under Drought and High Temperatures in Rice
著者
Wada, Shinya ; Takagi, Daisuke ; Miyake, Chikahiro ; Makino, Amane ; Suzuki, Yuji
著者ID
A2549
研究者ID
1000080637942
KUID
https://kuid-rm-web.ofc.kobe-u.ac.jp/search/detail?systemId=5cfd7000aa2dd274520e17560c007669
著者名
Wada, Shinya
和田, 慎也
ワダ, シンヤ
所属機関名
農学研究科
著者ID
A1074
著者名
Takagi, Daisuke
高木, 大輔
タカギ, ダイスケ
所属機関名
農学研究科
著者ID
A0017
研究者ID
1000080294289
KUID
https://kuid-rm-web.ofc.kobe-u.ac.jp/search/detail?systemId=3c4f300c59e5cf95520e17560c007669
著者名
Miyake, Chikahiro
三宅, 親弘
ミヤケ, チカヒロ
所属機関名
農学研究科
著者名
Makino, Amane
著者名
Suzuki, Yuji
収録物名
International Journal of Molecular Sciences
巻(号)
20(9)
ページ
2068-2068
出版者
MDPI
刊行日
2019-05-01
公開日
2019-06-24
抄録
It is of interest how photosynthetic electron transport (PET) reactions respond to excess light energy caused by the combination of drought stress and high temperatures. Since such information is scarcely available for photosystem I (PSI), this question was explored in rice (Oryza sativa L.) plants subjected to drought stress, using culture solutions that contain poly(ethylene glycol) at different concentrations under two day/night temperature regimes. At 27/22 degrees C (day/night), drought stress led to the oxidation of the reaction center of the chlorophyll of PSI (P700), and also led to decreases in the quantum efficiencies of photosystem II (PSII) and PSI, and a reduction of the primary quinone electron acceptor of PSI. Such drought stress responses were wholly stimulated at 35/30 degrees C. These parameters were strongly correlated with each other and were minimally affected by temperature. These results indicate that the drought stress responses of the respective PET reactions are closely associated with each other in the oxidization of P700 and that such responses are stimulated at high temperatures. The underlying mechanisms of these phenomena were discussed. While P700 oxidation is thought to suppress reactive oxygen species (ROS) production, PSI photoinhibition was observed under severe stress conditions, implying that P700 oxidation is not sufficient for the protection of PSI under drought stress.
キーワード
drought stress
high temperature
excess light stress
photochemistry of photosystem II and I
rice
カテゴリ
農学研究科
学術雑誌論文
権利
© 2019 by the authors. Licensee MDPI, Basel, Switzerland.
This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
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資源タイプ
journal article
言語
English (英語)
ISSN
1661-6596
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eISSN
1422-0067
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関連情報
DOI
https://doi.org/10.3390/ijms20092068
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