首页|Genomic diversity,population structure,and genome-wide association reveal genetic differentiation and trait improvements in mango

Genomic diversity,population structure,and genome-wide association reveal genetic differentiation and trait improvements in mango

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Mango(Mangifera indica L.)has been widely cultivated as a culturally and economically significant fruit tree for roughly 4000 years.Despite its rich history,little is known about the crop's domestication,genomic variation,and the genetic loci underlying agronomic traits.This study employs the whole-genome re-sequencing of 224 mango accessions sourced from 22 countries,with an average sequencing depth of 16.37 x,to explore their genomic variation and diversity.Through phylogenomic analysis,M.himalis J.Y.Liang,a species grown in China,was reclassified into the cultivated mango group known as M.indica.Moreover,our investigation of mango population structure and differentiation revealed that Chinese accessions could be divided into two distinct gene pools,indicating the presence of independent genetic diversity ecotypes.By coupling genome-wide association studies with analyses of genotype variation patterns and expression patterns,we identified several candidate loci and dominant genotypes associated with mango flowering capability,fruit weight,and volatile compound production.In conclusion,our study offers valuable insights into the genetic differentiation of mango populations,paving the way for future agronomic improvements through genomic-assisted breeding.

Xiaowei Ma、Hongxia Wu、Bin Liu、Songbiao Wang、Yuehua Zhang、Muqing Su、Bin Zheng、Hongbing Pan、Bang Du、Jun Wang、Ping He、Qianfu Chen、Hong An、Wentian Xu、Xiang Luo

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National Key Laboratory for Tropical Crop Breeding,Sanya 572024,China

Key Laboratory of Tropical Fruit Biology,Ministry of Agriculture&Rural Affairs

Key Laboratory for Postharvest Physiology and Technology of Tropical Horticultural Products of Hainan Province,South Subtropical Crops Research Institute,Chinese Academy of Tropical Agricultural Sciences,Zhanjiang,Guangdong 524091,China

Panzhihua Academy of Agricultural and Forestry Sciences,Panzhihua,Sichuan 617061,China

Liangshan Academy of Forest and Grassland,Xichang,Sichuan 615000,China

Tropical Crops Genetic Resources Institute,Chinese Academy of Tropical Agricultural Sciences,Haikou,Hainan 571100,China

Bioinformatics and Analytics Core,University of Missouri,Columbia,MO 65201,USA

College of Agriculture,Henan University,Zhengzhou,Henan 450046,China

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2024

10.1093/hr/uhae153

园艺研究(英文)

园艺研究(英文)

CSTPCD
ISSN：
年,卷(期)：2024.11(7)