StMAPK1 functions as a thermos-tolerant gene in regulating heat stress tolerance in potato (Solanum tuberosum)
文献类型： 外文期刊
作者： Zhu, Xi 1 ; Duan, Huimin 1 ; Zhang, Guodong 3 ; Jin, Hui 1 ; Xu, Chao 4 ; Chen, Shu 1 ; Zhou, Chuanmeng 5 ; Chen, Zhuo 1 ; Tang, Jinghua 1 ; Zhang, Yu 1 ;
作者机构： 1.Chinese Acad Trop Agr Sci, South Subtrop Crops Res Inst, Key Lab Trop Fruit Biol, Key Lab Hainan Prov Postharvest Physiol & Technol, Zhanjiang, Peoples R China
2.Chinese Acad Trop Agr Sci, Sanya Res Inst, Natl Key Lab Trop Crop Breeding, Sanya, Peoples R China
3.Xinzhou Normal Univ, Dept Biol, Xinzhou, Peoples R China
4.Jiangxi Acad Agr Sci, Inst Hort Sci, Nanchang, Peoples R China
5.Yulin Acad Agr Sci, Grain Crop Res Inst, Yulin, Peoples R China
关键词： heat stress; potato; mitogen-activated protein kinase 1; phenotypes; photosynthesis
期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：5.6； 五年影响因子：6.8 ）
ISSN： 1664-462X
年卷期： 2023 年 14 卷
页码：
收录情况： SCI
摘要： Background and aimsMitogen-activated protein kinases (MAPKs) have been reported to respond to various stimuli including heat stress. This research aimed to investigate whether StMAPK1 is implicated in the transduction of the heat stress signal to adapt heat stress as a thermos-tolerant gene. Materials and methodsPotato plants were cultivated under mild (30 & DEG;C) and acute (35 & DEG;C) heat stress conditions to analyze mRNA expression of StMAPKs and physiological indicators. StMAPK1 was up-regulated and down-regulated by transfection. Subcellular localization of StMAPK1 protein was observed by fluorescence microscope. The transgenic potato plants were assayed for physiological indexes, photosynthesis, cellular membrane integrity, and heat stress response gene expression. ResultsHeat stress altered the expression prolife of StMAPKs. StMAPK1 overexpression changed the physiological characteristics and phenotypes of potato plants under heat stresses. StMAPK1 mediates photosynthesis and maintains membrane integrity of potato plants in response to heat stress. Stress response genes (StP5CS, StCAT, StSOD, and StPOD) in potato plants were altered by StMAPK1 dysregulation. mRNA expression of heat stress genes (StHSP90, StHSP70, StHSP20, and StHSFA3) was affected by StMAPK1. ConclusionsStMAPK1 overexpression increases the heat-tolerant capacity of potato plants at the morphological, physiological, molecular, and genetic levels.
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