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Nat Genet ; 50(2): 285-296, 2018 02.
Artigo em Inglês | MEDLINE | ID: mdl-29358651

RESUMO

The genus Oryza is a model system for the study of molecular evolution over time scales ranging from a few thousand to 15 million years. Using 13 reference genomes spanning the Oryza species tree, we show that despite few large-scale chromosomal rearrangements rapid species diversification is mirrored by lineage-specific emergence and turnover of many novel elements, including transposons, and potential new coding and noncoding genes. Our study resolves controversial areas of the Oryza phylogeny, showing a complex history of introgression among different chromosomes in the young 'AA' subclade containing the two domesticated species. This study highlights the prevalence of functionally coupled disease resistance genes and identifies many new haplotypes of potential use for future crop protection. Finally, this study marks a milestone in modern rice research with the release of a complete long-read assembly of IR 8 'Miracle Rice', which relieved famine and drove the Green Revolution in Asia 50 years ago.


Assuntos
Produtos Agrícolas/genética , Evolução Molecular , Variação Genética , Oryza/classificação , Oryza/genética , Sequência Conservada , Domesticação , Especiação Genética , Genoma de Planta , Filogenia
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