1区 · 综合性期刊
ArticleOA
作者: Li, Haiyan ; Liu, Jun ; Yang, Chunyan ; Wei, Xiuzhi ; Liu, Bin ; Lyu, Xiangguang ; Li, Delin ; Cheng, Qican ; Hu, Guoyu ; Lu, Yuping ; Xing, Guangnan ; Ji, Ronghuan ; Zhao, Tao ; Li, Xiaojiao ; Shan, Zhihui ; Wang, Yueqiang ; Qin, Chao ; Zhang, Xueru ; Wang, Qiang ; Kong, Fanjiang ; Kong, Lingping ; Hu, Xiping ; Huang, Wen ; Qiu, Li-Juan ; Li, Hongyu ; Wang, Xing ; Liu, Like ; Jia, Zhiwei ; Li, Ying-Hui ; Zhou, Yonggang ; Wang, Ruizhen
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 PH13H3 with reduced interaction with GmCOP1s, resulting in accumulation of STF1/2, and reduced plant height. In addition, PH13H3 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.