数字农科院2.0

Comparative study of the Dof gene family in buckwheat: FtDof34's function in sugar biosynthesis and response to salt and drought stress

文献类型： 外文期刊

作者： Jha, Rintu;Li, Wei;Lin, Hao;He, Yuqi;Gao, Jia;Zhang, Kaixuan;Shao, Meihong;Zhou, Meiliang

作者机构：

关键词： Tartary buckwheat;Dof-family;Comparative genomics;1-Kestotetraose;Salt and drought stress

期刊名称： PLANT PHYSIOLOGY AND BIOCHEMISTRY

ISSN： 0981-9428

年卷期： 2025 年 231 卷

页码：

收录情况： SCIE（2025版）

摘要： Dof (DNA binding with one finger) type transcription factors play a key role in response to abiotic stress in plants. However, its functional role in buckwheat remains unexplored. Here, we conducted a comprehensive analysis of the Dof-gene family across three buckwheat species, revealing segmental duplication as the primary driver of family expansion and strong purifying selection during evolution. A FtDof34 gene, was identified through genome-wide association analysis and found to be associated with soluble sugar 1,1-kestotetraose content. Functional validation in A. thaliana and hairy root of Tartary buckwheat demonstrated that overexpression of this gene may promotes soluble sugar biosynthesis and enhances plant resistance to salt and drought stress. This study clarified the regulatory mechanisms of the Dof family in buckwheat species, elucidating the regulatory mechanisms of FtDof34 gene in regulating the biosynthesis of sugar metabolites and stress (salt and drought) resistance, offering potential genetic resources for breeding buckwheat varieties with superior agronomic traits.

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