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The bracteatus pineapple genome and domestication of clonally propagated crops.
- Source :
-
Nature genetics [Nat Genet] 2019 Oct; Vol. 51 (10), pp. 1549-1558. Date of Electronic Publication: 2019 Sep 30. - Publication Year :
- 2019
-
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.
- Subjects :
- Ananas growth & development
Bromelains metabolism
Crops, Agricultural growth & development
Gene Expression Regulation, Plant
Phenotype
Plants, Genetically Modified growth & development
Population Dynamics
Sugars metabolism
Ananas genetics
Crops, Agricultural genetics
Domestication
Genome, Plant
Plant Proteins genetics
Plants, Genetically Modified genetics
Quantitative Trait, Heritable
Subjects
Details
- Language :
- English
- ISSN :
- 1546-1718
- Volume :
- 51
- Issue :
- 10
- Database :
- MEDLINE
- Journal :
- Nature genetics
- Publication Type :
- Academic Journal
- Accession number :
- 31570895
- Full Text :
- https://doi.org/10.1038/s41588-019-0506-8