文献类型： 外文期刊
作者： Zheng, Haowei 1 ; Feng, Xinkang 2 ; Wang, Longlong 1 ; Shao, Wentao 1 ; Guo, Shiyu 2 ; Zhao, Duo 1 ; Li, Jiajia 1 ; Yan, Long 3 ; Miao, Long 1 ; Sun, Bincheng 4 ; Gao, Huihui 1 ; Qiu, Hongmei 5 ; Hu, Yu 1 ; Kong, Linlin 1 ; Stupar, Robert M. 6 ; Li, Ying-hui 2 ; Qiu, Li-juan 2 ; Wang, Xiaobo 1 ;
作者机构： 1.Anhui Agr Univ, Sch Agron, Hefei 230036, Peoples R China
2.Chinese Acad Agr Sci, Inst Crop Sci, Natl Key Facil Crop Gene Resources & Genet Improve, Key Lab Grain Crop Genet Resources Evaluat & Utili, Beijing 100081, Peoples R China
3.Hebei Acad Agr & Forestry Sci, Inst Cereal & Oil Crops, Huang Huai Key Lab Biol & Genet Improvement Soybea, Hebei Key Lab Crop Genet & Breeding,Natl Soybean I, Shijiazhuang 050035, Peoples R China
4.Hulunbuir Inst Agr & Anim Husb, Hulunbuir 021000, Peoples R China
5.Jilin Acad Agr Sci, Soybean Res Inst, Changchun 130000, Peoples R China
6.Univ Minnesota, Dept Agron & Plant Genet, St Paul, MN 55108 USA
关键词： GWAS; natural variation; seed oil-to-protein ratio; soybean; TWAS
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
页码：
收录情况： SCI
摘要： The seed oil-to-protein ratio has increased remarkably during soybean domestication; however, the principal genetic determinants governing this critical agronomic trait remain elusive. Integrated genome-wide and transcriptome-wide association studies (GWAS/TWAS) are conducted and identified GmSop20 on chromosome 20 as a pivotal regulator of soybean seed oil and its protein content. Genetic diversity analysis reveals a domestication-selected allele, GmSop20C, which has undergone intense artificial selection and is dominant in cultivars across northern China and the USA. This allele drives a substantial increase in the oil-to-protein ratio from 0.35 in ancestral lines to 0.47 in cultivars. Functional validation reveals that the knockout of GmSop20 significantly reduces the ratio to 0.19, while its overexpression increases it to 0.64. Notably, while mutant lines exhibit a modest increase in total oil and protein content, overexpression maintains stable compositional levels. Mechanistically, GmSop20 directly activates GmSWEET10a expression, synergizing two artificially selected loci within a unified regulatory network to amplify sugar allocation from the seed coat to the embryo, thereby enhancing oil accumulation. The findings establish GmSop20 as a master regulator of seed composition and provide insights for custom-designing soybean nutritional profiles, enabling the precise regulation of the oil-to-protein ratio through targeted manipulation of this key genetic module.
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