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Comparison of the activities of photosystem II of four table grapevine cultivars during high-temperature stress

文献类型： 外文期刊

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

作者机构： 1.Shanghai Acad Agr Sci, Res Inst Forestry & Pomol, Jinqi Rd 1000, Shanghai, Peoples R China

关键词： Chlorophyll a fluorescence; Heat-shock protein; Heat tolerance; 'Summer Black'

期刊名称：HORTICULTURE ENVIRONMENT AND BIOTECHNOLOGY （ 影响因子：1.842； 五年影响因子：2.083 ）

ISSN： 2211-3452

年卷期： 2018 年 59 卷 3 期

页码：

收录情况： SCI

摘要： High-temperature stress influences the growth and development of grapevines, and plant responses to this stress vary between laboratory and natural conditions. In the present study, the responses to high-temperature stress in four grapevine cultivars ('Summer Black', 'Zuijinxiang', 'Hupei1#', and 'Shenfeng') were studied by comparing chlorophyll a fluorescence and the levels of heat-shock protein 21 (HSP21) after exposure to control (35 A degrees C in controlled laboratory conditions or at 37 A degrees C in a greenhouse with naturally fluctuating temperatures) and high-temperature stress treatments (45 A degrees C in laboratory conditions or 42 A degrees C in the field conditions). Leaf water loss in 'Summer Black' was less than that in the three other cultivars after treatment at 45 A degrees C. Some parameters (I-Eo, W (k), RCQA, and M (o)) of photosystem II (PSII) activity were altered in 'Shenfeng', 'Zuijinxiang', and 'Hupei1#', but were unaltered in 'Summer Black' after treatment at 45 A degrees C. Other parameters (maximum photochemical efficiency (F (v)/F (m)), performance index on absorption basis (PIABS), I broken vertical bar (Po), I broken vertical bar (Eo), and HSP21 levels) were altered in 'Summer Black', but to a lesser extent than in the three other cultivars under high-temperature stress. Unlike 'Summer Black', extreme injury owing to leaf water loss to 'Shenfeng', 'Zuijinxiang', and 'Hupei1#' could be explained by disruption of PSII activity. Furthermore, there were the observed differences in PSII activity between in laboratory and field conditions, which could be considered as the mechanisms for high-temperature acclimation and other environment factors.

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