Progress has been made in the research on the co-regulation of soybean yield and quality.

Original title: Soybean production and quality of the collaborative control research progress
soybean domestication originated in China, and then widely spread around the world, providing mankind with the main vegetable oil and protein resources, is the world's important food cash crop. With the increase of the world population and the change of diet structure, the global demand for soybean consumption increases year by year, and it is of great significance to further improve the yield and quality of soybeans to ensure the world soybean production.
wild soybean grain is small, low oil content and high protein content, while domesticated cultivated soybeans are usually large grain, high oil content and low protein content. In the process of soybean domestication and improvement, it is not clear whether these changes in yield and quality character may be accomplished by the co-control of single genes. Recently, a number of research teams from the Institute of Genetics and Developmental Biology of the Chinese Academy of Sciences, Zhejiang University, Fujian University of Agriculture and For forgrolin, and the University of Illinois in the United States published a research paper entitled Simultaneous changes in seed, size oil content, and protein content driven by selection of SWEET homeogues domestication, and found that GmSWEET10a and GmSWEET10b can co-regulate soybean seed size, oil content and protein content, which play a key role in soybean domestication improvement.
the study first used a combination of genomics, bioinsingation and molecular genetics to find that GmSWEET10a and GmSWEET10b can co-regulate soybean seed size, oil content and protein content. Population genetics has found that GmSWEET10a and GmSWEET10b have progressive variation and artificial selection. Among them, GmSWEET10a was strongly selected in the process of soybean domestication, so that the seed content of cultivated varieties because of making the grain bigger, oil content increased, protein content decreased, and the degree of domestication and completion of GmSWEET10b lags behind That of GmSWEET10a, and the optimal genotype fixation has not yet been completed. Molecular mechanism analysis shows that GmSWEET10a and GmSWEET10b co-regulate seed size, oil content and protein content by transporting sucrose and hensaccharides, thus changing the sugar distribution of seed skin to embryo (Figure). In the future, genetic operation or molecular design breeding of the above two genes, especially GmSWEET10b, can further improve the grain size and oil content of cultivated varieties, which is of great significance to soybean production.
the paper was published May 28 in the journal National Science Review (DOI: 10.1093/nsr/nwaa110). Dr. Wang Shoudong of Zhejiang University, Dr. Liu Shulin of the Institute of Genetic Development of the Chinese Academy of Sciences and Dr. Wang Jie of Fujian Agricultural and Forth University were the co-authors of the article. Tian Zhixi, a researcher at the Institute of Genetic Development, Shou Huixia, a professor at Zhejiang University, Guan Yuefeng, a professor at Fujian Agricultural and Forth University, and Chen Liqing, an assistant professor at the University of Illinois in the United States, are co-authors of the paper. The research was funded by the National Key Research and Development Program, the National Natural Science Foundation of China, etc.
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