2017年3月20日, 國際學術權威刊物自然出版集團旗下子刊《Nature Genetics》雜誌線上發表了中國科學院東北地理所劉寶輝、孔凡江研究組、遺傳發育研究所田志喜研究組以及華南植物園侯興亮研究組合作的一篇研究論文。 東北地理所蘆思佳博士、趙曉暉博士、華南植物園博士研究生胡一龍、遺傳發育所博士研究生劉書林和東北地理所南海洋博士為論文共同第一作者。 通訊作者是中科院東北地理所劉寶輝研究員、孔凡江研究員、中科院遺傳發育所田志喜研究員以及華南植物園侯興亮研究員。
大豆是世界上重要的經濟糧食作物,
遺傳與發育生物學研究所田志喜研究組與中科院東北地理所孔凡江研究組和劉寶輝研究組以及中科院華南植物園侯興亮研究組合作,
圖1 J調控開花和大豆產量的模式圖
E3E4誘導調控E1是通過E3E4抑制調控J轉錄表達, 然後J抑制調控E1轉錄表達來完成, J蛋白能夠直接結合到E1啟動子上抑制其表達, 從而釋放了E1對FT轉錄抑制, 而誘導大豆開花與成熟。
原文連結:
原文摘要:
Soybean is a major legume crop originating in temperate regions, and photoperiod responsiveness is a key factor in its latitudinal adaptation. Varieties from temperate regions introduced to lower latitudes mature early and have extremely low grain yields. Introduction of the long-juvenile (LJ) trait extends the vegetative phase and improves yield under short-day conditions, thereby enabling expansion of cultivation in tropical regions. Here we report the cloning and characterization of J, the major classical locus conferring the LJ trait, and identify J as the ortholog of Arabidopsis thaliana EARLY FLOWERING 3 (ELF3). J depends genetically on the legume-specific flowering repressorE1, and J protein physically associates with the E1 promoter to downregulate its transcription, relieving repression of two important FLOWERING LOCUS T (FT) genes and promoting flowering under short days. Our findings identify an important new component in flowering-time control in soybean and provide new insight into soybean adaptation to tropical regions.