Evolution of flower color pattern through selection on regulatory small RNAs.
Science
; 358(6365): 925-928, 2017 11 17.
Article
em En
| MEDLINE
| ID: mdl-29146812
ABSTRACT
Small RNAs (sRNAs) regulate genes in plants and animals. Here, we show that population-wide differences in color patterns in snapdragon flowers are caused by an inverted duplication that generates sRNAs. The complexity and size of the transcripts indicate that the duplication represents an intermediate on the pathway to microRNA evolution. The sRNAs repress a pigment biosynthesis gene, creating a yellow highlight at the site of pollinator entry. The inverted duplication exhibits steep clines in allele frequency in a natural hybrid zone, showing that the allele is under selection. Thus, regulatory interactions of evolutionarily recent sRNAs can be acted upon by selection and contribute to the evolution of phenotypic diversity.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Pigmentos Biológicos
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Pigmentação
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Regulação da Expressão Gênica de Plantas
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Antirrhinum
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Flores
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Pequeno RNA não Traduzido
Idioma:
En
Revista:
Science
Ano de publicação:
2017
Tipo de documento:
Article
País de afiliação:
Reino Unido