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

文献类型： 外文期刊

第一作者： Ma, Xiaowei

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

作者机构：

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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