Artículo
Nuclear DNA content in the polyploid complex Turnera ulmifolia (Turnera L., Passifloraceae)
Fecha de publicación:
10/2011
Editorial:
Springer Wien
Revista:
Plant Systematics and Evolution
ISSN:
0378-2697
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Turnera ulmifolia constitutes a well-studied polyploid complex with allo- and autopolyploid species ranging from 2 to 8x. Flow cytometry was used to determine nuclear DNA content, and to estimate 2C- and 1Cx-values with the aim of analysing the genome size in Turnera in terms of polyploid speciation. The 2C-value and 1Cx-value were evaluated in 12 species of the T. ulmifolia complex. Nuclear DNA content was estimated by flow cytometry of nuclei stained with propidium iodide. The 2C DNA content ranged from 1.38 to 1.83 pg in diploids, from 2.67 to 3.96 pg in tetraploids, from 2.73 to 4.31 pg in hexaploids, and from 3.53 to 5.90 pg in octoploids. The 1Cx-value ranged from 0.44 to 0.99 pg. The Turnera ulmifolia complex showed an increase in total DNA content in the ploidy level, but not in the expected proportion. The general tendency indicated a decrease in the 1Cx-value with increasing chromosome number, with T. grandidentata 4x being an outstanding exception. The 1Cx-values in the allooctoploids T. aurelii and T. cuneiformis differed by 1.6-fold from each other, probably as a result of different evolutionary histories following divergence from the last common ancestor.
Palabras clave:
2c-Value
,
Cx-Value
,
Dna Content
,
Passifloraceae
,
Polyploid Complex
,
Turnera
,
Turneraceae
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(IBODA)
Articulos de INST.DE BOTANICA DARWINION (I)
Articulos de INST.DE BOTANICA DARWINION (I)
Articulos(IBONE)
Articulos de INST.DE BOTANICA DEL NORDESTE (I)
Articulos de INST.DE BOTANICA DEL NORDESTE (I)
Articulos(IEGEBA)
Articulos de INSTITUTO DE ECOLOGIA, GENETICA Y EVOLUCION DE BS. AS
Articulos de INSTITUTO DE ECOLOGIA, GENETICA Y EVOLUCION DE BS. AS
Citación
López, Alicia; Panseri, Andrea Florencia; Poggio, Lidia; Fernandez, Aveliano; Nuclear DNA content in the polyploid complex Turnera ulmifolia (Turnera L., Passifloraceae); Springer Wien; Plant Systematics and Evolution; 296; 3-4; 10-2011; 225-230
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