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Genome-Wide Association Studies Reveal the Genetic Architecture of Ionomic Variation in Grains of Tartary Buckwheat

文献类型： 外文期刊

作者： Wang, Zhirong 1 ; He, Yuqi 1 ; Zhao, Mengyu 1 ; Liu, Xiang-Qian 2 ; Lin, Hao 1 ; Shi, Yaliang 1 ; Zhang, Kaixuan 1 ; Lei, Guijie 3 ; Lai, Dili 1 ; Liu, Tong 1 ; Peng, Xiaoyang 1 ; He, Jiayue 1 ; Li, Wei 1 ; Wang, Xiangru 1 ; Woo, Sun-Hee 4 ; Quinet, Muriel 5 ; Fernie, Alisdair R. 6 ; Huang, Xin-Yuan 2 ; Zhou, Meiliang 1 ;

作者机构： 1.Chinese Acad Agr Sci, Inst Crop Sci, Minist Agr & Rural Affairs, Natl Key Facil Crop Gene Resources & Genet Improve, Beijing 100081, Peoples R China

2.Nanjing Agr Univ, Coll Resources & Environm Sci, State Key Lab Crop Genet & Germplasm Enhancement &, Nanjing 210095, Peoples R China

3.Yunnan Univ, Sch Agr, State Key Lab Conservat & Utilizat Bioresources Yu, Key Lab Biol & Germplasm Innovat Perennial Rice, Kunming 650500, Peoples R China

4.Chungbuk Natl Univ, Dept Crop Sci, Cheongju 28644, South Korea

5.Catholic Univ Louvain, Earth & Life Inst Agron ELI A, Grp Rech Physiol Vegetale GRPV, Croix Sud 45,Boite L7-07-13, B-1348 Louvain La Neuve, Belgium

6.Max Planck Inst Mol Plant Physiol, Dept Mol Physiol, D-14476 Potsdam, Germany

7.Nanjing Agr Univ, Sanya Inst, Sanya 572024, Peoples R China

关键词： biofortification; Fagopyrum tataricum; Genetic basis; ionomic variation

期刊名称：ADVANCED SCIENCE （ 影响因子：14.1； 五年影响因子：15.6 ）

ISSN：

年卷期： 2025 年 12 卷 17 期

页码：

收录情况： SCI

摘要： Tartary buckwheat (Fagopyrum tataricum) is esteemed as a medicinal crop due to its high nutritional and health value. However, the genetic basis for the variations in Tartary buckwheat grain ionome remains inadequately understood. Through genome-wide association studies (GWAS) on grain ionome, 52 genetic loci are identified associated with 10 elements undergoing selection. Molecular experiments have shown that the variation in FtACA13's promoter (an auto-inhibited Ca2+-ATPase) is accountable for grain sodium concentration and salt tolerance, which underwent selection during domestication. FtYPQ1 (a vacuolar amino acid transporter) exhibits zinc transport activity, enhancing tolerance to excessive zinc stress and raising zinc accumulation. Additionally, FtNHX2 (a Na+/H+ exchanger) positively regulates arsenic content. Further genomic comparative analysis of "20A1" (wild accession) and "Pinku" (cultivated accession) unveiled structural variants in key genes involved in ion uptake and transport that may result in considerable changes in their functions. This research establishes the initial comprehensive grain ionome atlas in Tartary buckwheat, which will significantly aid in genetic improvement for nutrient biofortification.

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