A high-resolution genotype-phenotype map identifies the TaSPL17 controlling grain number and size in wheat

文献类型： 外文期刊

第一作者： Liu, Yangyang

作者： Liu, Yangyang;Wang, Ziying;Wu, He;Shen, Kuocheng;Yu, Xuchang;Sun, Zhiwen;Ye, Botao;Liu, Danni;Zhang, Lili;Shen, Liping;Guo, Zifeng;Liu, Yangyang;Wang, Ziying;Wu, He;Shen, Kuocheng;Zhang, Zhiliang;Kang, Lipeng;Xu, Song;Bi, Aoyue;Zhao, Xuebo;Xu, Daxing;Yu, Xuchang;Sun, Zhiwen;Ye, Botao;Liu, Danni;Lu, Fei;Guo, Zifeng;Chen, Jun;He, Zhonghu;Zhang, Xueyong;Hao, Chenyang;Gong, Yan;Hao, Yuanfeng;Ma, Youzhi;Yin, Changbin;Zhang, Zhiliang;Kang, Lipeng;Xu, Song;Bi, Aoyue;Zhao, Xuebo;Xu, Daxing;Lu, Fei;He, Zhonghu;Wu, Jianhui;Lu, Fei

作者机构：

关键词： Grain number; Grain size; GWAS; TaSPL17; Wheat

期刊名称：GENOME BIOLOGY （ 影响因子：12.3； 五年影响因子：17.4 ）

ISSN： 1474-760X

年卷期： 2023 年 24 卷 1 期

页码：

收录情况： SCI

摘要： Background: Large-scale genotype-phenotype association studies of crop germplasm are important for identifying alleles associated with favorable traits. The limited number of single-nucleotide polymorphisms (SNPs) in most wheat genome-wide association studies (GWASs) restricts their power to detect marker-trait associations. Additionally, only a few genes regulating grain number per spikelet have been reported due to sensitivity of this trait to variable environments.Results: We perform a large-scale GWAS using approximately 40 million filtered SNPs for 27 spike morphology traits. We detect 132,086 significant marker-trait associations and the associated SNP markers are located within 590 associated peaks. We detect additional and stronger peaks by dividing spike morphology into sub-traits relative to GWAS results of spike morphology traits. We propose that the genetic dissection of spike morphology is a powerful strategy to detect signals for grain yield traits in wheat. The GWAS results reveal that TaSPL17 positively controls grain size and number by regulating spikelet and floret meristem development, which in turn leads to enhanced grain yield per plant. The haplotypes at TaSPL17 indicate geographical differentiation, domestication effects, and breeding selection.Conclusion: Our study provides valuable resources for genetic improvement of spike morphology and a fast-forward genetic solution for candidate gene detection and cloning in wheat.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序