High temperature effects on D1 protein turnover in three wheat varieties with different heat susceptibility

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• 作者：Hua Li ; Hailiang Xu ; Pengju Zhang ; Mingquan Gao ; Dan Wang…
• 关键词：High temperature ; PSII photochemical efficiency ; D1 protein ; Wheat
• 刊名：Plant Growth Regulation
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：81
• 期：1
• 页码：1-9
• 全文大小：
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Plant Sciences; Plant Anatomy/Development; Plant Physiology; Agriculture;
• 出版者：Springer Netherlands
• ISSN：1573-5087
• 卷排序：81

文摘

Heat stress is one of the main abiotic stresses that limit plant growth. The effects of high temperature on oxidative damage, PSII activity and D1 protein turnover were studied in three wheat varieties with different heat susceptibility (CS, YN949 and AK58). The results showed that heat stress induced lower lipid peroxidation in AK58 and YN949 than CS, which was related to different changes of SOD, CAT, POD and H₂O₂. Similarly, AK58 and YN949 performed better PSII photochemical efficiency (F_v/F_m, ΦPSII and ETR) under high temperature, which was attributed to rapid synthesis and degradation of D1 protein. Moreover, higher expression of D1 protein turnover-related genes (PsbA, STN8, PBCP, Deg1, Deg2, Deg5, Deg8, FtsH1/5 and FtsH2/8) and SOD activity in AK58 and YN949 under normal conditions also established a basis for acclimatizing high temperatures, thereby alleviating PSII photoinhibition and reducing oxidative damage when exposed to heat stress.