FtbZIP12 Positively Regulates Responses to Osmotic Stress in Tartary Buckwheat

文献类型： 外文期刊

第一作者： Weng, Wenfeng

作者： Weng, Wenfeng;Lu, Xiang;Gao, Anjing;Yao, Xin;Tang, Yong;Wu, Weijiao;Ma, Chao;Bai, Qing;Xiong, Ruiqi;Ruan, Jingjun;Zhou, Meiliang

作者机构：

关键词： Fagopyrum tataricum; FtbZIP12; osmotic stress; Arabidopsis thaliana; plant resistance

期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：6.208； 五年影响因子：6.628 ）

ISSN：

年卷期： 2022 年 23 卷 21 期

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收录情况： SCI

摘要： ABFs play a key role in regulating plant osmotic stress. However, in Tartary buckwheat, data on the role of ABF genes in osmotic stress remain limited and its associated mechanism in osmoregulation remain nebulous. Herein, a novel ABF family in Tartary buckwheat, FtbZIP12, was cloned and characterized. FtbZIP12 is a transcriptional activator located in the nucleus; its expression is induced by NaCl, mannitol, and abscisic acid (ABA). Atopic expression of FtbZIP12 in Arabidopsis promoted seed germination, reduced damage to primary roots, and improved the tolerance of seedlings to osmotic stress. The quantitative realtime polymerase chain reaction (RT-qPCR) results showed that the expressions of the typical genes related to stress, the SOS pathway, and the proline synthesis pathway in Arabidopsis were significantly (p < 0.05) upregulated under osmotic stress. FtbZIP12 improved the osmotic pressure resistance by reducing the damage caused by reactive oxygen species to plants and maintained plant homeostasis by upregulating the expression of genes related to stress, osmotic regulation, and ion homeostasis. This study identified a key candidate gene for understanding the mechanism underlying osmotic-stress-regulated function in Tartary buckwheat, thereby providing a theoretical basis for improving its yield and quality.

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