ER whorls triggered by GhCNX6 were discovered involved in drought stress on cotton

文献类型： 外文期刊

第一作者： Xu, Nan

作者： Xu, Nan;Zhang, Hong;Lu, Xuke;Wang, Xiaoge;Zhang, Yuexin;Fan, Yapeng;Wang, Jing;Han, Mingge;Chen, Xiugui;Wang, Junjuan;Wang, Delong;Wang, Shuai;Chen, Chao;Guo, Lixue;Zhao, Lanjie;Ye, Wuwei

作者机构：

关键词： Cotton; Calnexin; GhCNX6; Drought stress; ER whorls

期刊名称：ENVIRONMENTAL AND EXPERIMENTAL BOTANY （ 影响因子：6.028； 五年影响因子：6.246 ）

ISSN： 0098-8472

年卷期： 2022 年 203 卷

页码：

收录情况： SCI

摘要： Drought stress is the main abiotic stress causing damage to cotton growth and severe yield loss. Under envi-ronmental stress conditions, the endoplasmic reticulum (ER) folding environment is disturbed, resulting in the accumulation of unfolded/misfolded proteins, causing ER stress and triggering the unfolded protein response (UPR). Analysis of drought RNA-sequencing data revealed a Gh_D09G2402.1 (GhCNX) gene involved in ER protein processing. Through the observation of the ultrastructure of the ER under drought stress in cotton, the characteristic structure of the endoplasmic reticulum whorl was found. Virus-induced gene silencing (VIGS) mediated GhCNX6 silenced cotton plants were found highly sensitive to drought stress. Arabidopsis thaliana plants overexpressing GhCNX6 showed stronger tolerance to drought stress, indicating that the GhCNX6 gene is involved in the action mechanism of cotton drought stress and enhances the tolerance to drought stress. Drought stress leads to ER stress response, and the resulting ER whorl and CNX gene play a role in the ER protein pro-cessing pathway, thereby regulating the mechanism of cotton response to drought stress. This study will help to further explore the mechanism of cotton drought resistance.

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