Simultaneous changes in seed size, oil content and protein content driven by selection of SWEET homologues during soybean domestication
Simultaneous changes in seed size, oil content and protein content driven by selection of SWEET homologues during soybean domestication作者机构：State Key Laboratory of Plant Physiology and Biochemistry College of Life sciences Zhejiang University State Key Laboratory of Plant Cell and Chromosome Engineering Institute of Genetics and Developmental Biology Innovation Academy for Seed Design Chinese Academy of Sciences University of Chinese Academy of Sciences College of Resources and Environment Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology Fujian Agriculture and Forestry University Institute of Plant Science and Resources Okayama University Institute of Crop Science Anhui Academy of Agricultural Sciences Department of Plant Biology School of Integrative Biology University of Illinois at Urbana-Champaign Institute for Molecular Physiology and Cluster of Excellence on Plant Sciences (CEPLAS) Heinrich Heine University of Düsseldorf FAFU-UCR Joint Center for Horticultural Plant Biology and Metabolomics Haixia Institute of Science and Technology Fujian Agriculture and Forestry University
出 版 物：《National Science Review》 (国家科学评论(英文版))
年 卷 期：2020年第7卷第11期
页 面：1776-1786页
核心收录：
基 金：supported by the National Natural Science Foundation of China (31771689) the Ministry of Agriculture of China (2016ZX08004001) to H.S the National Natural Science Foundation of China (31788103 and 31525018) to Z.T Grantin-Aid for Specially Promoted Research from the Japan Society for the Promotion of Science (KAKENHI grant 16H06296) to J.F.M a startup fund from the Department of Plant Biology,University of Illinois at Urbana-Champaign to L.C
主 题：soybean domestication yield seed quality SWEET
摘 要：Soybean accounts for more than half of the global production of oilseed and more than a quarter of the protein used globally for human food and animal feed. Soybean domestication involved parallel increases in seed size and oil content, and a concomitant decrease in protein content. However, science has not yet discovered whether these effects were due to selective pressure on a single gene or multiple genes. Here,re-sequencing data from800 genotypes revealed a strong selection during soybean domestication on Gm SWEET10a. The selection of Gm SWEET10a conferred simultaneous increases in soybean-seed size and oil content as well as a reduction in the protein content. The result was validated using both near-isogenic lines carrying substitution of haplotype chromosomal segments and transgenic soybeans. Moreover,Gm SWEET10b was found to be functionally redundant with its homologue Gm SWEET10a and to be undergoing selection in current breeding, leading the the elite allele Gm SWEET10b, a potential target for present-day soybean breeding. Both GmSWEET10a and GmSWEET10b were shown to transport sucrose and hexose, contributing to sugar allocation from seed coat to embryo, which consequently determines oil and protein contents and seed size in soybean. We conclude that past selection of optimal Gm SWEET10a alleles drove the initial domestication of multiple soybean-seed traits and that targeted selection of the elite allele Gm SWEET10b may further improve the yield and seed quality of modern soybean cultivars.
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