Whole-genome sequencing provides insights into the genetic diversity and domestication of bitter gourd (Momordica spp.)
文献类型： 外文期刊
作者： Cui, Junjie 1 ; Yang, Yan 2 ; Luo, Shaobo 3 ; Wang, Le 4 ; Huang, Rukui 5 ; Wen, Qingfang 6 ; Han, Xiaoxia 7 ; Miao, Nans 1 ;
作者机构： 1.South China Agr Univ, Coll Hort, Key Lab Biol & Genet Improvement Hort Crops South, Minist Agr & Rural Affairs,State Key Lab Conserva, Guangzhou 510642, Peoples R China
2.Chinese Acad Trop Agr Sci, Trop Crop Genet Resources Inst, Danzhou 571737, Peoples R China
3.Guangdong Acad Agr Sci, Vegetable Res Inst, Guangzhou 510640, Peoples R China
4.BGI Shenzhen, BGI Genom, Shenzhen 518083, Peoples R China
5.Guangxi Acad Agr Sci, Vegetable Res Inst, Nanning 530007, Peoples R China
6.Fujian Acad Agr Sci, Crop Res Inst, Fuzhou 350013, Peoples R China
7.Hunan Acad Agr Sci, Inst Vegetable Res, Changsha 410125, Peoples R China
8.Jiangxi Acad Agr Sci, Inst Vegetables & Flowers, Nanchang 330200, Jiangxi, Peoples R China
9.Kasetsart Univ, World Vegetable Ctr, East & Southeast Asia, Res & Training Stn, Kamphaeng Saen 73140, Nakhon Pathom, Thailand
期刊名称：HORTICULTURE RESEARCH （ 2020影响因子：6.793； 五年影响因子：6.589 ）
ISSN： 2662-6810
年卷期： 2020 年 7 卷 1 期
收录情况： SCI
摘要： Bitter gourd (Momordica charantia) is a popular cultivated vegetable in Asian and African countries. To reveal the characteristics of the genomic structure, evolutionary trajectory, and genetic basis underlying the domestication of bitter gourd, we performed whole-genome sequencing of the cultivar Dali-11 and the wild small-fruited line TR and resequencing of 187 bitter gourd germplasms from 16 countries. The major gene clusters (Bi clusters) for the biosynthesis of cucurbitane triterpenoids, which confer a bitter taste, are highly conserved in cucumber, melon, and watermelon. Comparative analysis among cucurbit genomes revealed that the Bi cluster involved in cucurbitane triterpenoid biosynthesis is absent in bitter gourd. Phylogenetic analysis revealed that the TR group, including 21 bitter gourd germplasms, may belong to a new species or subspecies independent from M. charantia. Furthermore, we found that the remaining 166 M. charantia germplasms are geographically differentiated, and we identified 710, 412, and 290 candidate domestication genes in the South Asia, Southeast Asia, and China populations, respectively. This study provides new insights into bitter gourd genetic diversity and domestication and will facilitate the future genomics-enabled improvement of bitter gourd.
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