Regulation of soybean stem growth habit:A ten-year progress report  

作　　者：Shang-Shang Xiong Dan-Dan Guo Zhao Wan Le Quan Wen-Tian Lu Yongguo Xue Baohui Liu Hong Zhai 

机构地区：[1]State Key Laboratory of Black Soils Conservation and Utilization,Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences,Harbin 150081,Heilongjiang,China [2]Key Laboratory of Soybean Molecular Design Breeding,Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences,Harbin 150081,Heilongjiang,China [3]College of Life Science,Northeast Agricultural University,Harbin 150030,Heilongjiang,China [4]College of Advanced Agricultural Sciences,University of Chinese Academy of Sciences,Beijing 100049,China [5]Institute of Soybean Research,Heilongjiang Provincial Academy of Agricultural Sciences,Harbin 150086,Heilongjiang,China [6]Innovative Center of Molecular Genetics and Evolution,School of Life Sciences,Guangzhou University,Guangzhou 510006,Guangdong,China

出　　处：《The Crop Journal》2023年第6期1642-1648,共7页作物学报（英文版）

基　　金：the National Key Research and Development Program of China(2021YFD1201101);the National Natural Science Foundation of China(32272187);Young Scientists Group Project of Northeast Institute of Geography and Agroecology(2022QNXZ05);Natural Science Foundation of Heilongjiang Province of China(YQ2021C034).

摘　　要：Stem growth habit dictates plant architecture and influences flowering and podding(seed setting),making it an essential morphological and breeding agronomic trait of soybean(Glycine max).Stem growth habit in soybean is affected by photoperiod and environment and is determined by genetic variation at major genes.Classical genetic analysis identified two critical loci,designated Determinacy 1(Dt1)and Determinacy 2(Dt2).Dt1 is an ortholog of Arabidopsis thaliana TERMINAL FLOWER1(TFL1)and specifies an indeterminate stem growth habit,whereas Dt2 specifies a semi-determinate growth habit.MADS-box proteins,including Dt2,SUPPRESSOR OF OVEREXPRESSION OF CO1(GmSOC1)and MADS-box genes downregulated by E1(GmMDE),repress Dt1 expression.Photoreceptors encoded by the E3 and E4 loci regulate the expression of soybean FLOWERING LOCUS T(GmFT)orthologs via circadian clock genes and E1,and GmFTs compete with Dt1 to regulate stem growth habit.Study of the molecular mechanism underlying the regulation of stem growth habit in soybean has focused on the repression of Dt1 expression.Here we provide an overview of progress made in elucidating the genetic and molecular bases of stem growth habit in soybean,with emphasis on the molecular components responsible for integrating photoperiodic flowering and stem growth habit.

关 键 词：Stem growth habit PHOTOPERIOD SOYBEAN Molecular mechanism 

分 类 号：S565.1[农业科学—作物学]