Artículo
Rapid Evolution of Seed Dormancy During Sunflower De-Domestication
Hernández, Fernando
; Vercellino, Román Boris
; Pandolfo, Claudio Ezequiel
; Mandel, Jennifer R.; Presotto, Alejandro Daniel
Fecha de publicación:
22/02/2022
Editorial:
Oxford Univ Press Inc
Revista:
Journal of Heredity
ISSN:
0022-1503
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Hybridization between crops and their wild relatives may promote the evolution of de-domesticated (feral) weeds. Wild sunflower (Helianthus annuus L.) is typically found in ruderal environments, but crop-wild hybridization may facilitate the evolution of weedy populations. Using one crop-specific mitochondrial marker (CMS-PET1) and 14 nuclear SSR markers, we studied the origin and genetic diversity of a recently discovered weedy population of sunflower (named BRW). Then, using a resurrection approach, we tested for rapid evolution of weedy traits (seed dormancy, herbicide resistance, and competitive ability) by sampling weedy and wild populations 10 years apart (2007 and 2017). All the weedy plants present the CMS-PET1 cytotype, confirming their feral origin. At the nuclear markers, BRW showed higher genetic diversity than the cultivated lines and low differentiation with one wild population, suggesting that wild hybridization increased their genetic diversity. We found support for rapid evolution towards higher seed dormancy, but not for higher competitive ability or herbicide resistance. Our results highlight the importance of seed dormancy during the earliest stages of adaptation and show that crop-wild hybrids can evolve quickly in agricultural environments.
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(CERZOS)
Articulos de CENTRO REC.NAT.RENOVABLES DE ZONA SEMIARIDA(I)
Articulos de CENTRO REC.NAT.RENOVABLES DE ZONA SEMIARIDA(I)
Citación
Hernández, Fernando; Vercellino, Román Boris; Pandolfo, Claudio Ezequiel; Mandel, Jennifer R.; Presotto, Alejandro Daniel; Rapid Evolution of Seed Dormancy During Sunflower De-Domestication; Oxford Univ Press Inc; Journal of Heredity; 113; 3; 22-2-2022; 288-297
Compartir
Altmétricas