Genomic basis of selective breeding from the closest wild relative of large-fruited tomato  

作　　者：Junwei Yang Yun Liu Bin Liang Qinqin Yang Xuecheng Li Jiacai Chen Hongwei Li Yaqing Lyu Tao Lin 

机构地区：[1]State Key Laborary of Agrobiotechnology,Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops,College of Horticulture,China Agricultural University,Beijing 100193,China [2]Shenzhen Branch,Guangdong Laboratory of Lingnan Modern Agriculture,Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs,Agricultural Genomics Institute at Shenzhen,Chinese Academy of Agricultural Sciences,Shenzhen,518124,China.

出　　处：《Horticulture Research》2023年第8期254-264,共11页园艺研究（英文）

基　　金：This study was supported by the National Natural Science Foundation of China(32072571);the 111 Project(B17043);the Construction of Beijing Science and Technology Innovation and Service Capacity in Top Subjects(CEFF-PXM2019_014207_000032).

摘　　要：The long and intricate domestication history of the tomato(Solanum lycopersicum)includes selection sweeps that have not been fully explored,and these sweeps show significant evolutionary trajectories of domestication traits.Using three distinct selection strategies,we represented comprehensive selected sweeps from 53 Solanum pimpinellifolium(PIM)and 166 S.lycopersicum(BIG)accessions,which are defined as pseudo-domestication in this study.We identified 390 potential selection sweeps,some of which had a significant impact on fruit-related traits and were crucial to the pseudo-domestication process.During tomato pseudo-domestication,we discovered a minor–effect allele of the SlLEA gene related to fruit weight(FW),as well as the major haplotypes of fw2.2/cell number regulator(CNR),fw3.2/SlKLUH,and fw11.3/cell size regulator(CSR)in cultivars.Furthermore,18 loci were found to be significantly associated with FW and six fruit-related agronomic traits in genome-wide association studies.By examining population differentiation,we identified the causative variation underlying the divergence of fruit flavonoids across the large-fruited tomatoes and validated BRI1-EMS-SUPPRESSOR 1.2(SlBES1.2),a gene that may affect flavonoid content by modulating the MYB12 expression profile.Our results provide new research routes for the genetic basis of fruit traits and excellent genomic resources for tomato genomics-assisted breeding.

关 键 词：BREEDING CULTIVAR TRAITS 

分 类 号：S641.2[农业科学—蔬菜学] S33[农业科学—园艺学]