Genome-wide characterization of two homeobox families identifies key genes associated with grain-related traits in wheat

文献类型： 外文期刊

第一作者： Li, Yuting

作者： Li, Yuting;Xiong, Hongchun;Guo, Huijun;Zhao, Linshu;Xie, Yongdun;Gu, Jiayu;Zhao, Shirong;Ding, Yuping;Li, Huiyuan;Zhou, Chunyun;Fu, Meiyu;Wang, Qingguo;Liu, Luxiang

作者机构：

关键词： Wheat; TALE genes; Protein interaction; Grain-related traits; Subcellular localization

期刊名称：PLANT SCIENCE （ 影响因子：5.2； 五年影响因子：5.7 ）

ISSN： 0168-9452

年卷期： 2023 年 336 卷

页码：

收录情况： SCI

摘要： Homeodomain proteins encoded by BEL1- and KNAT1-type genes are ubiquitously distributed across plant species and play important roles in growth and development, whereby a comprehensive investigation of their molecular interactions and potential functions in wheat is of great significance. In this study, we systematically investigated the phylogenetic relationships, gene structures, conserved domains, and cis-acting elements of 34 TaBEL and 34 TaKNAT genes in the wheat genome. Our analysis revealed these genes evolved under different selective pressures and showed variable transcript levels in different wheat tissues. Subcellular localization analysis further indicated the proteins encoded by these genes were either exclusively located in the nucleus or both in the nucleus and the cytoplasm. Additionally, a comprehensive protein-protein interaction network was constructed with representative genes in which each TaBEL or TaKNAT proteins interact with at least two partners. The evaluation of wheat mutants identified key genes, including TaBEL-5B, TaBEL-4A.4, and TaKNAT6, which are involved in grain-related traits. Finally, haplotype analysis suggests TaKNAT-6B is associated with grain-related traits and is preferentially selected among a large set of wheat accessions. Our study provides important information on BEL1- and KNAT1-type gene families in wheat, and lays the foundation for functional research in the future.

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