Identification and fine mapping of qSW2 for leaf slow wilting in soybean

作     者：Shengyou Li Changling Wang Chunjuan Yan Xugang Sun Lijun Zhang Yongqiang Cao Wenbin Wang Shuhong Song Shengyou Li;Changling Wang;Chunjuan Yan;Xugang Sun;Lijun Zhang;Yongqiang Cao;Wenbin Wang;Shuhong Song

作者机构：Institute of Crop ResearchLiaoning Academy of Agricultural SciencesShenyang 110161LiaoningChina 

出 版 物：《The Crop Journal》 (作物学报（英文版）)

年 卷 期：2024年第12卷第1期

页      面：244-251页

核心收录：

学科分类：0710[理学-生物学] 09[农学] 0901[农学-作物学] 

基　　金：The study was supported by the National Natural Science Foundation of China(32101795,32301782) National Key Research and Development Program of China(2016YFD0100201-01) Liaoning Provincial Major Special Project of Agricultural Science and Technology(2022JH1/10200002,2021JH1/10400038) Key Research and Development Plan of Liaoning Science and Technology Department(2021JH2/1020027) Shenyang Seed Industry Innovation Project(22-318-2-12) 

主　　题：Drought GWAS Linkage mapping Slow wilting Soybean(Glycine max) 

摘      要：Drought is one of the abiotic stresses limiting the production of soybean(Glycine max).Elucidation of the genetic and molecular basis of the slow-wilting(SW)trait of this crop offers the prospect of its genetic improvement.A panel of 188 accessions and a set of recombinant inbred lines produced from a cross between cultivars Liaodou 14 and Liaodou 21 were used to identify quantitative-trait loci(QTL)associated with *** were genotyped by Specific-locus amplified fragment sequencing and seedling leaf wilting was assessed under three water-stress treatments.A genome-wide association study identified 26 SW-associated single-nucleotide polymorphisms(SNPs),including three located in a 248-kb linkage-disequilibrium(LD)block on chromosome *** mapping revealed a major-effect QTL,qSW2,associated with all three treatments and adjacent to the LD *** mapping in a BC_(2)F_(3) population derived from a backcross between Liaodou 21 and R26 confined qSW2 to a 60-kb *** expression and sequence variation analysis identified the gene Glyma.02 g218100,encoding an auxin transcription factor,as a candidate gene for *** results will contribute significantly to improving drought-resistant soybean cultivars by providing genetic information and resources.