Artículo
Epigenetic patterns newly established after interspecific hybridization in natural populations of Solanum
Fecha de publicación:
10/2013
Editorial:
John Wiley & Sons Ltd
Revista:
Ecology and Evolution
ISSN:
2045-7758
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Interspecific hybridization is known for triggering genetic and epigenetic changes, such as modifications on DNA methylation patterns and impact on phenotypic plasticity and ecological adaptation. Wild potatoes (Solanum, section Petota) are adapted to multiple habitats along the Andes, and natural hybridizations have proven to be a common feature among species of this group. Solanum x rechei, a recently formed hybrid that grows sympatrically with the parental species S. kurtzianum and S. microdontum, represents an ideal model for studying the ecologically and evolutionary importance of hybridization in generating of epigenetic variability. Genetic and epigenetic variability and their correlation with morphological variation were investigated in wild and ex situ conserved populations of these three wild potato species using amplified fragment length polymorphism (AFLP) and methylation-sensitive amplified polymorphism (MSAP) techniques. We observed that novel methylation patterns doubled the number of novel genetic patterns in the hybrid and that the morphological variability measured on 30 morphological characters had a higher correlation with the epigenetic than with the genetic variability. Statistical comparison of methylation levels suggested that the interspecific hybridization induces genome demethylation in the hybrids. A Bayesian analysis of the genetic data reveled the hybrid nature of S. x rechei, with genotypes displaying high levels of admixture with the parental species, while the epigenetic information assigned S. x rechei to its own cluster with low admixture. These findings suggested that after the hybridization event, a novel epigenetic pattern was rapidly established, which might influence the phenotypic plasticity and adaptation of the hybrid to new environments.
Palabras clave:
Adaptation
,
Dna Methylation
,
Hybridization
,
Wild Potatoes
Archivos asociados
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Identificadores
Colecciones
Articulos(CCT - MENDOZA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - MENDOZA
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - MENDOZA
Articulos(IBAM)
Articulos de INST.DE BIOLOGIA AGRICOLA DE MENDOZA
Articulos de INST.DE BIOLOGIA AGRICOLA DE MENDOZA
Citación
Cara, Nicolás; Marfil, Carlos Federico; Masuelli, Ricardo Williams; Epigenetic patterns newly established after interspecific hybridization in natural populations of Solanum; John Wiley & Sons Ltd; Ecology and Evolution; 3; 11; 10-2013; 3764-3779
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