Mitogen-activated protein kinase 11 (MAPK11) maintains growth and photosynthesis of potato plant under drought condition

被引：43
作者：
Zhu, Xi [1 ,2 ,3 ]
Zhang, Ning [2 ,3 ]
Liu, Xue [2 ,3 ]
Li, Shigui [1 ,2 ]
Yang, Jiangwei [2 ,3 ]
Hong, Xusheng [3 ]
Wang, Fangfang [3 ]
Si, Huaijun [1 ,2 ,3 ]
机构：
[1] Gansu Agr Univ, Coll Agron, Lanzhou 730070, Peoples R China
[2] Gansu Agr Univ, Gansu Prov Key Lab Aridland Crop Sci, Gansu Key Lab Crop Genet & Germplasm Enhancement, Lanzhou 730070, Peoples R China
[3] Gansu Agr Univ, Coll Life Sci & Technol, Lanzhou 730070, Peoples R China
来源：
PLANT CELL REPORTS | 2021年 / 40卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Potato; Drought stress; Mitogen-activated protein kinases 11; Photosynthesis; Antioxidant enzyme; SOLANUM-TUBEROSUM L; ARABIDOPSIS-THALIANA; STRESS TOLERANCE; ENHANCES DROUGHT; SALT STRESS; GRAIN-SIZE; GENE; RICE; RESISTANCE; EXPRESSION;
D O I：
10.1007/s00299-020-02645-6
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
Key message StMAPK11 overexpression promotes potato growth, physiological activities and photosynthesis under drought conditions. Mitogen-activated protein kinases (MAPKs) are import regulators of MAPK pathway in plants under drought condition. However, the critical role in potato (Solanum tuberosum L.) drought resistance is not fully understood. In this study, we aimed to explore the role of StMAPK11 under drought stress. The result of RT-qPCR for assay of StMAPKs expression demonstrated that 15 StMAPKs were differentially expressed in leaves, flowers, petioles, stamens, pistils, stems, stolons, roots, tubers and tuber peels of potato. StMAPKs was dynamically modulated by abiotic stresses and plant hormone treatments, and StMAPK11 was apparently up-regulated under drought conditions. Therefore, the vectors pCPB-StMAPK11 and pCPBI121-miRmapk11 for over-expression and down-regulation of StMAPK11 were constructed, respectively, and introduced into potato cultivar Atlantic. The result showed that StMAPK11 promoted potato growth under drought conditions, as well as the physiological activities evidenced by changes in SOD, CAT and POD activity and H2O2, proline and MDA content. StMAPK11 up-regulation intensified drought resistance of potato plant by elevating antioxidant activities and photosynthesis. Moreover, we consolidated the protective role of StMAPK11 in tobacco and Arabidopsis against drought stress. The result could provide new insights into the function of StMAPK11 in drought response and its possible mechanisms.
引用
收藏
页码：491 / 506
页数：16
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