作者
Chao Qin,Yinghui Li,Delin Li,Xueru Zhang,Lingping Kong,Yingshan Zhou,Xiangguang Lyu,Ronghuan Ji,Xiu‐Zhi Wei,Qican Cheng,Zhiwei Jia,Xiaojiao Li,Qianqian Wang,Yueqiang Wang,Weiyuan Huang,Chen Yang,Like Liu,Xing Wang,Guangnan Xing,Guoyu Hu,Shan Zhang,Ruizhen Wang,Haiyan Li,Hongyu Li,Tao Zhao,Jun Li,Yong Lu,Xiping Hu,Fanjiang Kong,Lijuan Qiu,Bin Liu
摘要
Abstract Shading in combination with extended photoperiods can cause exaggerated stem elongation (ESE) in soybean, leading to lodging and reduced yields when planted at high-density in high-latitude regions. However, the genetic basis of plant height in adaptation to these regions remains unclear. Here, through a genome-wide association study, we identify a plant height regulating gene on chromosome 13 ( PH13 ) encoding a WD40 protein with three main haplotypes in natural populations. We find that an insertion of a Ty1/Copia -like retrotransposon in the haplotype 3 leads to a truncated PH13 H3 with reduced interaction with GmCOP1s, resulting in accumulation of STF1/2, and reduced plant height. In addition, PH13 H3 allele has been strongly selected for genetic improvement at high latitudes. Deletion of both PH13 and its paralogue PHP can prevent shade-induced ESE and allow high-density planting. This study provides insights into the mechanism of shade-resistance and offers potential solutions for breeding high-yielding soybean cultivar for high-latitude regions.