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The genome evolution and domestication of tropical fruit mango

文献类型： 外文期刊

作者： Wang, Peng 1 ; Luo, Yingfeng 3 ; Huang, Jianfeng 1 ; Gao, Shenghan 3 ; Zhu, Guopeng 5 ; Dang, Zhiguo 1 ; Gai, Jiangtao 1 ;

作者机构： 1.Chinese Acad Trop Agr Sci, Trop Crops Genet Resources Inst, 4 Xueyuan Rd, Haikou 571100, Hainan, Peoples R China

2.Minist Agr, Key Lab Crop Gene Resources & Germplasm Enhanceme, 4 Xueyuan Rd, Haikou 571100, Hainan, Peoples R China

3.Chinese Acad Sci, Inst Microbiol, State Key Lab Microbial Resources, 1-3 West Beichen Rd, Beijing 100101, Peoples R China

4.Chinese Acad Sci, Beijing Inst Genom, Key Lab Genome Sci & Informat, Beijing, Peoples R China

5.Hainan Univ, Sch Landscape & Hort, Haikou 570208, Hainan, Peoples R China

6.Univ Nebraska, Ctr Plant Sci Innovat, Lincoln, NE 68588 USA

7.Univ Nebraska, Dept Biochem, Lincoln, NE 68588 USA

8.Guizhou Subtrop Crops Res Inst, Qianxinan 562400, Guzhou, Peoples R China

9.Shanghai Jiao Tong Univ, Joint Int Res Lab Metab & Dev Sci, Key Lab Urban Agr South,Fudan SJTU Nottingham Pla, Minist Agr,Plant Biotechnol Res Ctr,Sch Agr & Bio, Shanghai 200240, Peoples R China

10.Chinese Acad Sci, Core Genom Facil, Beijing, Peoples R China

11.Yunnan Acad Agr Sci, Inst Trop & Subtrop Cash Crops, Baoshan 678005, Yunnan, Peoples R China

12.Guangxi Subtrop Crops Res Inst, Nanning 530001, Peoples R China

13.Univ Chinese Acad Sci, Beijing, Peoples R China

关键词： Mango genome; Whole-genome duplication; Photosynthesis; Urushiol; Germplasm

期刊名称：GENOME BIOLOGY （ 影响因子：13.583； 五年影响因子：17.433 ）

ISSN： 1474-760X

年卷期： 2020 年 21 卷 1 期

页码：

收录情况： SCI

摘要： Background Mango is one of the world's most important tropical fruits. It belongs to the family Anacardiaceae, which includes several other economically important species, notably cashew, sumac and pistachio from other genera. Many species in this family produce family-specific urushiols and related phenols, which can induce contact dermatitis. Results We generate a chromosome-scale genome assembly of mango, providing a reference genome for the Anacardiaceae family. Our results indicate the occurrence of a recent whole-genome duplication (WGD) event in mango. Duplicated genes preferentially retained include photosynthetic, photorespiration, and lipid metabolic genes that may have provided adaptive advantages to sharp historical decreases in atmospheric carbon dioxide and global temperatures. A notable example of an extended gene family is the chalcone synthase (CHS) family of genes, and particular genes in this family show universally higher expression in peels than in flesh, likely for the biosynthesis of urushiols and related phenols. Genome resequencing reveals two distinct groups of mango varieties, with commercial varieties clustered with India germplasms and demonstrating allelic admixture, and indigenous varieties from Southeast Asia in the second group. Landraces indigenous in China formed distinct clades, and some showed admixture in genomes. Conclusions Analysis of chromosome-scale mango genome sequences reveals photosynthesis and lipid metabolism are preferentially retained after a recent WGD event, and expansion of CHS genes is likely associated with urushiol biosynthesis in mango. Genome resequencing clarifies two groups of mango varieties, discovers allelic admixture in commercial varieties, and shows distinct genetic background of landraces.

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