The genome evolution and domestication of tropical fruit mango
Autor: | Meng Yang, Huangkai Zhang, Sen Wang, Luo Ruixiong, Kexuan Tang, Guopeng Zhu, Shenghan Gao, Guodi Huang, Qian Li, Xinyu Tan, Chen Huarui, Chen Yeyuan, Yingfeng Luo, Huang Jianfeng, Xiuxu Ye, Zhao Zhichang, Junya Wei, Songnian Hu, Shuangyang Wu, Beibei Bai, Zhangguang Ni, Min Zhu, Edgar B. Cahoon, Dang Zhiguo, Bing Zhang, Deyong Gong, Jiangtao Gai, Peng Wang, Aiping Gao |
---|---|
Rok vydání: | 2020 |
Předmět: |
0106 biological sciences
Germplasm Chalcone synthase Genome evolution lcsh:QH426-470 01 natural sciences Genome Mango genome Domestication Evolution Molecular 03 medical and health sciences Phenols Botany Gene family Anacardiaceae Whole-genome duplication Photosynthesis lcsh:QH301-705.5 Gene 030304 developmental biology 0303 health sciences Mangifera biology Pigmentation Research Urushiol Genetic Variation biology.organism_classification lcsh:Genetics lcsh:Biology (General) Fruit biology.protein Acyltransferases Genome Plant 010606 plant biology & botany Reference genome |
Zdroj: | Genome Biology Genome Biology, Vol 21, Iss 1, Pp 1-17 (2020) |
ISSN: | 1474-760X |
DOI: | 10.1186/s13059-020-01959-8 |
Popis: | BackgroundMango 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.ResultsWe 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.ConclusionsAnalysis 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. |
Databáze: | OpenAIRE |
Externí odkaz: |