PROTECTIVE ROLES OF D1 PROTEIN TURNOVER AND THE XANTHOPHYLL CYCLE IN TOMATO(SOLANUM LYCOPERSICUM)UNDER SUB-HIGH TEMPERATURE AND HIGH LIGHT STRESS

作     者：Tao LUA Jiazhi LU Mingfang QI Zhouping SUN Yufeng LIU Tianlai LI Tao LU;Jiazhi LU;Mingfang QI;Zhouping SUN;Yufeng LIU;Tianlai LI

作者机构：Horticulture DepartmentKey Laboratory of Protected Horticulture of Ministry of EducationShenyang Agricultural UniversityShenyang 110866China National&Local Joint Engineering Research Center of Northern Horticultural Facilities Design&Application Technology(Liaoning)Shenyang 110866China Key Laboratory of Horticultural Crops Genetic Improvement(Ministry of Agriculture and Rural Affairs of China)Institute of Vegetables and FlowersChinese Academy of Agricultural SciencesBeijing 100081China. 

出 版 物：《Frontiers of Agricultural Science and Engineering》 (农业科学与工程前沿（英文版）)

年 卷 期：2021年第8卷第2期

页      面：262-279页

学科分类：09[农学] 0902[农学-园艺学] 090202[农学-蔬菜学] 

基　　金：the National Natural Science Foundation of China(31772356) the China Agriculture Research System(CARS-25) 

主　　题：D1 turnover photoinhibition photoprotection photosynthesis tomato xanthophyll cycle 

摘      要：D1 protein turnover and the xanthophyll cycle(XC)are important photo-protective mechanisms in plants that operate under adverse ***,streptomycin sulfate(SM)and dithiothreitol(DTT)were used in tomato plants as inhibitors of D1 protein turnover and XC to elucidate their photoprotec-tive impacts under sub-high temperature and high light conditions(HH,35°C,1000 limol m 2.S1).SM and DTT treatments significantly reduced the net photosynthetic rate,apparent quantum efficiency,maximum photochemical efficiency,and potential activity of photosystem II,leading to photoinhibition and a decline in plant biomass under *** increase in reactive oxygen species levels resulted in thylakoid membrane lipid *** addition,there were increased non-photochemical quenching and decreased chlorophyll pigments in SM and DTT application,causing an inhibition of D1 protein production at both transcriptional and translational ***,inhibition of D1 turnover caused greater photoinhibition than XC ***,the recovery levels of most photosynthesis indicators in DTT-treated plants were higher than in SM-treated *** findings support the view that D1 turnover has a more important role than XC in photoprotection in tomato under HH conditions.