Artículo
Allotetraploids in Patagonia with Affinities to Western North American Diploids: Did Dispersal or Genome Doubling Occur First?
Fecha de publicación:
09/2012
Editorial:
Springer
Revista:
Botanical Review
ISSN:
0006-8101
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Resumen
Amphitropical disjunct distributions between western North America and western South America have intrigued botanists for over a century. Here, specific examples of migration and speciation are investigated using herbaceous species from the phlox family (Polemoniaceae) as a model for considering the timing of dispersal relative to speciation. Comparative DNA sequencing reveals that, in Collomia and Navarretia, the South American species are allopolyploids, suggesting either two dispersals prior to the allopolyploidization event for each species with subsequent extirpation of the diploid progenitors from South America, or allopolyploid formation prior to dispersal with extirpation of these polyploids from North America. Divergence time estimates support a Pliestocene dispersal hypothesis and sequence data indicate that, at least in Collomia, hybridization of the diploid progenitors occurred in South America.
Archivos asociados
http://dx.doi.org/10.1007/s12229-012-9101-8
https://link.springer.com/article/10.1007%2Fs12229-012-9101-8
https://link.springer.com/article/10.1007%2Fs12229-012-9101-8

Citación:
Johnson, Leigh; Chan, Lauren M.; Pozner, Raúl Ernesto; Glazier, Lisa D.; Allotetraploids in Patagonia with Affinities to Western North American Diploids: Did Dispersal or Genome Doubling Occur First?; Springer; Botanical Review; 78; 3; 9-2012; 288-306
Comunidades y colecciones
-
Articulos(IBODA) [240]
Articulos de INST.DE BOTANICA DARWINION (I)