文献类型： 外文期刊
作者： Qi, Zhaoming 1 ; Guo, Chaocheng 2 ; Li, Haiyang 3 ; Qiu, Hongmei 4 ; Li, Hui 1 ; Jong, CholNam 1 ; Yu, Guolong 2 ; Zhang, Yu 1 ; Hu, Limin 1 ; Wu, Xiaoxia 1 ; Xin, Dawei 1 ; Yang, Mingliang 1 ; Liu, Chunyan 1 ; Lv, Jian 5 ; Wang, Xu 2 ; Kong, Fanjiang 3 ; Chen, Qingshan 1 ;
作者机构： 1.Northeast Agr Univ, Coll Agr, Harbin, Heilongjiang, Peoples R China
2.Shanghai Jiao Tong Univ, Shanghai Collaborat Innovat Ctr Agriseeds, Joint Ctr Single Cell Biol, Sch Agr & Biol, Shanghai, Peoples R China
3.Guangzhou Univ, Innovat Ctr Mol Genet & Evolut, Guangdong Prov Key Lab Plant Adaptat & Mol Design, Guangzhou Key Lab Crop Gene Editing,Sch Life Sci, Guangzhou, Peoples R China
4.Natl Soybean Engn Ctr, Soybean Res Inst, Jilin Acad Agr Sci, Changchun, Peoples R China
5.Syngenta Biotechnol China, Dept Innovat, Beijing, Peoples R China
关键词： Soybean; Seed fatty acid content; Seed protein content; Natural variation; Domestication
期刊名称：PLANT BIOTECHNOLOGY JOURNAL （ 影响因子：13.8； 五年影响因子：13.2 ）
ISSN： 1467-7644
年卷期： 2023 年
页码：
收录情况： SCI
摘要： Soybean is one of the most economically important crops worldwide and an important source of unsaturated fatty acids and protein for the human diet. Consumer demand for healthy fats and oils is increasing, and the global demand for vegetable oil is expected to double by 2050. Identification of key genes that regulate seed fatty acid content can facilitate molecular breeding of high-quality soybean varieties with enhanced fatty acid profiles. Here, we analysed the genetic architecture underlying variations in soybean seed fatty acid content using 547 accessions, including mainly landraces and cultivars from northeastern China. Through fatty acid profiling, genome re-sequencing, population genomics analyses, and GWAS, we identified a SEIPIN homologue at the FA9 locus as an important contributor to seed fatty acid content. Transgenic and multiomics analyses confirmed that FA9 was a key regulator of seed fatty acid content with pleiotropic effects on seed protein and seed size. We identified two major FA9 haplotypes in 1295 resequenced soybean accessions and assessed their phenotypic effects in a field planting of 424 accessions. Soybean accessions carrying FA9(H2) had significantly higher total fatty acid contents and lower protein contents than those carrying FA9(H1). FA9(H2) was absent in wild soybeans but present in 13% of landraces and 26% of cultivars, suggesting that it may have been selected during soybean post-domestication improvement. FA9 therefore represents a useful genetic resource for molecular breeding of high-quality soybean varieties with specific seed storage profiles.
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