Genomic diversity, population structure, and genome-wide association reveal genetic differentiation and trait improvements in mango
文献类型： 外文期刊
作者： Ma, Xiaowei 1 ; Wu, Hongxia 1 ; Liu, Bin 4 ; Wang, Songbiao 1 ; Zhang, Yuehua 1 ; Su, Muqing 1 ; Zheng, Bin 1 ; Pan, Hongbing 4 ; Du, Bang 4 ; Wang, Jun 5 ; He, Ping 5 ; Chen, Qianfu 6 ; An, Hong 7 ; Xu, Wentian 1 ; Luo, Xiang 8 ;
作者机构： 1.Natl Key Lab Trop Crop Breeding, Sanya 572024, Peoples R China
2.Chinese Acad Trop Agr Sci, South Subtrop Crops Res Inst, Key Lab Trop Fruit Biol, Minist Agr & Rural Affairs, Zhanjiang 524091, Guangdong, Peoples R China
3.Chinese Acad Trop Agr Sci, South Subtrop Crops Res Inst, Key Lab Postharvest Physiol & Technol Trop Hort Pr, Zhanjiang 524091, Guangdong, Peoples R China
4.Panzhihua Acad Agr & Forestry Sci, Panzhihua 617061, Sichuan, Peoples R China
5.Liangshan Acad Forest & Grassland, Xichang 615000, Sichuan, Peoples R China
6.Chinese Acad Trop Agr Sci, Trop Crops Genet Resources Inst, Haikou 571100, Hainan, Peoples R China
7.Univ Missouri, Bioinformat & Analyt Core, Columbia, MO 65201 USA
8.Henan Univ, Coll Agr, Zhengzhou 450046, Henan, Peoples R China
期刊名称：HORTICULTURE RESEARCH （ 影响因子：7.6； 五年影响因子：8.2 ）
ISSN： 2662-6810
年卷期： 2024 年 11 卷 7 期
页码：
收录情况： SCI
摘要： 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 16.37x, 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.
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