Dai Ai-Hua, Yang Su-Xin, Zhou Huang-Kai, Tang Kuan-Qiang, Li Guang, Leng Jian-Tian, Yu Hui, Zhang Yao-Hua, Gao Jin-Shan, Yang Xia, Guo Yin-Jie, Jiang Ning, Feng Xian-Zhong
Key Laboratory of Soybean Molecular Design Breeding, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China.
University of Chinese Academy of Sciences, Beijing 100049, China.
Genes (Basel). 2018 Dec 7;9(12):611. doi: 10.3390/genes9120611.
Gene expression divergence is an important evolutionary driving force for the retention of duplicate genes. In this study, we identified three subfamily genes in soybean, , and , which experienced different duplication events. was mainly expressed in leaf tissue and the vegetative phase, whereas was mainly expressed in floral tissue and seed, i.e., the reproductive phase. Expression of could be detected in all the tissues and phases mentioned above. The expression levels of and in different soybean cultivars showed positive correlations with leaf size and 100-seed weight, respectively. The population genetics analysis indicated that the three genes had experienced different selective pressures during domestication and improved breeding of soybean. Deciphering the function of this subfamily of genes may well prove useful to breeders for improving soybean's agronomic traits.
基因表达差异是重复基因保留的重要进化驱动力。在本研究中，我们在大豆中鉴定出三个亚家族基因，即 、 和 ，它们经历了不同的复制事件。 主要在叶片组织和营养生长阶段表达，而 主要在花组织和种子中表达，即在生殖阶段表达。 在上述所有组织和阶段均可检测到表达。不同大豆品种中 和 的表达水平分别与叶片大小和百粒重呈正相关。群体遗传学分析表明，这三个基因在大豆驯化和改良育种过程中经历了不同的选择压力。阐明该基因亚家族的功能可能对育种者改良大豆农艺性状很有用。
