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Different response of photosystem II to short and long-term drought stress in Arabidopsis thaliana.
Chen, Yang-Er; Liu, Wen-Juan; Su, Yan-Qiu; Cui, Jun-Mei; Zhang, Zhong-Wei; Yuan, Ming; Zhang, Huai-Yu; Yuan, Shu.
Afiliación
  • Chen YE; College of Life Sciences, Sichuan Agricultural University, Ya'an 625014, China. anty9826@163.com.
  • Liu WJ; Center of Analysis and Testing, Sichuan Academy of Agricultural Sciences, Chengdu 610066, China.
  • Su YQ; College of Life Science, Sichuan University, Chengdu 610064, China.
  • Cui JM; College of Life Sciences, Sichuan Agricultural University, Ya'an 625014, China.
  • Zhang ZW; College of Resources Science and Technology, Sichuan Agricultural University, Chengdu 611130, China.
  • Yuan M; College of Life Sciences, Sichuan Agricultural University, Ya'an 625014, China.
  • Zhang HY; College of Life Sciences, Sichuan Agricultural University, Ya'an 625014, China.
  • Yuan S; College of Resources Science and Technology, Sichuan Agricultural University, Chengdu 611130, China. roundtree318@hotmail.com.
Physiol Plant ; 158(2): 225-35, 2016 Oct.
Article en En | MEDLINE | ID: mdl-26918860
Short- and long-term drought stress on photosystem II (PSII) and oxidative stress were studied in Arabidopsis thaliana. Under drought stress, chlorophyll (Chl) content, Chl fluorescence, relative water content and oxygen evolution capacity gradually decreased, and the thylakoid structure was gradually damaged. Short-term drought stress caused a rapid disassembly of the light-harvesting complex II (LHCII). However, PSII dimers kept stable under the short-term drought stress and significantly decreased only after 15 days of drought stress. Immunoblotting analysis of the thylakoid membrane proteins showed that most of the photosystem proteins decreased after the stress, especially for Lhcb5, Lhcb6 and PsbQ proteins. However, surprisingly, PsbS significantly increased after the long-term drought stress, which is consistent with the substantially increased non-photochemical quenching (NPQ) after the stress. Our results suggest that the PSII-LHCII supercomplexes and LHCII assemblies play an important role in preventing photo-damages to PSII under drought stress.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Arabidopsis / Complejos de Proteína Captadores de Luz / Complejo de Proteína del Fotosistema II / Proteínas de las Membranas de los Tilacoides Idioma: En Revista: Physiol Plant Año: 2016 Tipo del documento: Article País de afiliación: China Pais de publicación: Dinamarca
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Arabidopsis / Complejos de Proteína Captadores de Luz / Complejo de Proteína del Fotosistema II / Proteínas de las Membranas de los Tilacoides Idioma: En Revista: Physiol Plant Año: 2016 Tipo del documento: Article País de afiliación: China Pais de publicación: Dinamarca