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Changes in the protective mechanism of photosystem II and molecular regulation in response to high temperature stress in grapevines

文献类型： 外文期刊

作者： Zha, Qian 1 ; Xi, Xiaojun 1 ; Jiang, Aili 1 ; Wang, Shiping 2 ; Tian, Yihua 1 ;

作者机构： 1.Shanghai Acad Agr Sci, Res Inst Forestry & Pomol, Shanghai 201403, Peoples R China

2.Shanghai Jiao Tong Univ, Sch Agr & Biol, Shanghai 200240, Peoples R China

关键词： Chlorophyll a fluorescence;Grapevines;Heat-shock proteins;High temperature stress;Photosystem II

期刊名称：PLANT PHYSIOLOGY AND BIOCHEMISTRY （ 影响因子：4.27； 五年影响因子：4.816 ）

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收录情况： SCI

摘要： The response to high temperature stress, which influences the growth and development of grapes, varies between laboratory conditions and ambient growth conditions, and is poorly understood. In the present study, we investigated the effects of high temperature on grapevines (Vitis vinifera L x Vitis labrusca L) grown under artificial and ambient conditions. A temperature of 35 degrees C did not alter Photosystem II (PS II) activity and the expression of some heat-shock protein (HSPs) genes. These changes were, however, observed at 45 degrees C under artificial conditions, as well as when the ambient natural temperature was greater than 40 degrees C. Interestingly, these changes corresponded to shifts in PS II activity and HSPs expression. The protective mechanism of PS II was induced by temperatures greater than 40 degrees C. These data indicating that the expression of HSFA2, GLOS1 and some heat-shock protein (sHSPs) genes were more sensitive to the heat stress. Unlike the Kyoho grapevines, the Jumeigui grapevines showed rapid and dramatically deterioration in PS II activity and the expression of some heat response genes and HSP21, indicating that the Jumeigui grapevines could not counter the heat stress. These were some differences in PSII activity and the expression of heat response genes between the two cultivated conditions could be attributed to other environmental factors, inherent plant vigor, and the adaptation mechanism. (C) 2016 Elsevier Masson SAS. All rights reserved.

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