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A comprehensive genome variation map of melon identifies multiple domestication events and loci influencing agronomic traits

Guangwei Zhao 1 Qun Lian 1 Zhonghua Zhang 2, 3 Qiushi Fu 1 Yuhua He 1 Shuangwu Ma 1 Valentino Ruggieri 4, 5 Antonio Monforte 6 Pingyong Wang 1 Irene Julca 7, 8, 9 Huaisong Wang 1 Junpu Liu 1 Yong Xu 10 Runze Wang 11 Jiabing Ji 1 Zhihong Xu 1 Weihu Kong 1 Yang Zhong 1 Jianli Shang 1 Lara Pereira 5, 4 Jason Argyris 5, 4 Jian Zhang 12 Carlos Mayobre 4, 5 Marta Pujol 4, 5 Elad Oren 4, 5 Diandian Ou 1 Jiming Wang 1 Dexi Sun 1 Shengjie Zhao 1 Yingchun Zhu 1 Na Li 1 Nurit Katzir 13 Amit Gur Catherine Dogimont 14 Hanno Schaefer 15 Wei Fan 16 Abdelhafid Bendahmane 17 Zhangjun Fei 18 Michel Pitrat 14 Toni Gabaldón 9 Tao Lin 19 Jordi Garcia-Mas 20, 5, * Yongyang Xu 1 Sanwen Huang 1
Abstract : Melon is an economically important fruit crop that has been cultivated for thousands of years; however, the genetic basis and history of its domestication still remain largely unknown. Here we report a comprehensive map of the genomic variation in melon derived from the resequencing of 1,175 accessions, which represent the global diversity of the species. Our results suggest that three independent domestication events occurred in melon, two in India and one in Africa. We detected two independent sets of domestication sweeps, resulting in diverse characteristics of the two subspecies melo and agrestis during melon breeding. Genome-wide association studies for 16 agronomic traits identified 208 loci significantly associated with fruit mass, quality and morphological characters. This study sheds light on the domestication history of melon and provides a valuable resource for genomics-assisted breeding of this important crop.
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Submitted on : Wednesday, April 1, 2020 - 3:36:55 PM
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Guangwei Zhao, Qun Lian, Zhonghua Zhang, Qiushi Fu, Yuhua He, et al.. A comprehensive genome variation map of melon identifies multiple domestication events and loci influencing agronomic traits. Nature Genetics, Nature Publishing Group, 2019, 51 (11), pp.1607-1615. ⟨10.1038/s41588-019-0522-8⟩. ⟨hal-02527982⟩

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