大豆生态适应性的分子遗传基础
Soybean is a major legume crop originating in temperate regions, and photoperiod responsivenessis a key factor in its latitudinal adaptation. Varieties from temperate regions introduced to lowerlatitudes mature early and have extremely low grain yields. Introduction of the long-juvenile (LJ) traitextends the vegetative phase and improves yield under short-day conditions, thereby enablingexpansion of cultivation in tropical regions. Here we report the cloning and characterization of J, themajor classical locus conferring the LJ trait, and identify J as the ortholog of Arabidopsis thalianaEARLY FLOWERING 3(ELF3). J depends genetically on the legume-specific flowering repressor El,and J protein physically associates with the El promoter to downregulate its transcription, relievingrepression of two important FLOWERING LOCUS T (FT) genes and promoting flowering under shortdays. Our findings identify an important new component in flowering-time control in soybean andprovide new insight into soybean adaptation to tropical regions.
大豆 生态适应性 分子遗传
刘宝辉
广州大学
国内会议
河北保定
中文
6-6
2017-10-19（万方平台首次上网日期，不代表论文的发表时间）