| Literature DB >> 31570895 |
Li-Yu Chen1, Robert VanBuren2,3, Margot Paris4, Hongye Zhou5, Xingtan Zhang1, Ching Man Wai2, Hansong Yan1, Shuai Chen1, Michael Alonge6, Srividya Ramakrishnan6, Zhenyang Liao1, Juan Liu1, Jishan Lin1, Jingjing Yue1, Mahpara Fatima1, Zhicong Lin1, Jisen Zhang1, Lixian Huang1, Hao Wang5, Teh-Yang Hwa7, Shu-Min Kao7, Jae Young Choi8, Anupma Sharma9, Jian Song10, Lulu Wang1, Won C Yim11, John C Cushman11, Robert E Paull12, Tracie Matsumoto13, Yuan Qin1, Qingsong Wu14, Jianping Wang1,10, Qingyi Yu1,9, Jun Wu15, Shaoling Zhang15, Peter Boches13, Chih-Wei Tung7, Ming-Li Wang16, Geo Coppens d'Eeckenbrugge17,18, Garth M Sanewski19, Michael D Purugganan8, Michael C Schatz6, Jeffrey L Bennetzen20, Christian Lexer21, Ray Ming22,23.
Abstract
Domestication of clonally propagated crops such as pineapple from South America was hypothesized to be a 'one-step operation'. We sequenced the genome of Ananas comosus var. bracteatus CB5 and assembled 513 Mb into 25 chromosomes with 29,412 genes. Comparison of the genomes of CB5, F153 and MD2 elucidated the genomic basis of fiber production, color formation, sugar accumulation and fruit maturation. We also resequenced 89 Ananas genomes. Cultivars 'Smooth Cayenne' and 'Queen' exhibited ancient and recent admixture, while 'Singapore Spanish' supported a one-step operation of domestication. We identified 25 selective sweeps, including a strong sweep containing a pair of tandemly duplicated bromelain inhibitors. Four candidate genes for self-incompatibility were linked in F153, but were not functional in self-compatible CB5. Our findings support the coexistence of sexual recombination and a one-step operation in the domestication of clonally propagated crops. This work guides the exploration of sexual and asexual domestication trajectories in other clonally propagated crops.Entities:
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Year: 2019 PMID： 31570895 DOI： 10.1038/s41588-019-0506-8
Source DB: PubMed Journal: Nat Genet ISSN： 1061-4036 Impact factor: 38.330