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Abstract:

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. © 2011 Springer-Verlag.

Registro:

Documento: Artículo
Título:Nuclear DNA content in the polyploid complex Turnera ulmifolia (Turnera L., Passifloraceae)
Autor:López, A.; Panseri, A.F.; Poggio, L.; Fernández, A.
Filiación:Instituto de Botánica Darwinion (CONICET), Labardén 200, CC 22, B1642HYD San Isidro, Buenos Aires, Argentina
Facultad de Ciencias Exactas y Naturales y Agrimensura (UNNE), Instituto de Botánica del Nordeste (UNNE-CONICET), CC 209, 3400 Corrientes, Argentina
Departamento de Ecología, Genética y Evolución (FCEN, UBA), Ciudad Universitaria, Pabellón II, Piso 4, C1428EHA Buenos Aires, Argentina
Palabras clave:2C-value; Cx-value; DNA content; Passifloraceae; Polyploid complex; Turnera; Turneraceae; Passiflora edulis; Passifloraceae; Turnera; Turnera aurelii; Turnera cuneiformis; Turnera grandidentata; Turnera ulmifolia; Turneraceae
Año:2011
Volumen:296
Número:3-4
Página de inicio:225
Página de fin:230
DOI: http://dx.doi.org/10.1007/s00606-011-0489-0
Título revista:Plant Systematics and Evolution
Título revista abreviado:Plant Syst. Evol.
ISSN:03782697
CODEN:ESPFB
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03782697_v296_n3-4_p225_Lopez

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Citas:

---------- APA ----------
López, A., Panseri, A.F., Poggio, L. & Fernández, A. (2011) . Nuclear DNA content in the polyploid complex Turnera ulmifolia (Turnera L., Passifloraceae). Plant Systematics and Evolution, 296(3-4), 225-230.
http://dx.doi.org/10.1007/s00606-011-0489-0
---------- CHICAGO ----------
López, A., Panseri, A.F., Poggio, L., Fernández, A. "Nuclear DNA content in the polyploid complex Turnera ulmifolia (Turnera L., Passifloraceae)" . Plant Systematics and Evolution 296, no. 3-4 (2011) : 225-230.
http://dx.doi.org/10.1007/s00606-011-0489-0
---------- MLA ----------
López, A., Panseri, A.F., Poggio, L., Fernández, A. "Nuclear DNA content in the polyploid complex Turnera ulmifolia (Turnera L., Passifloraceae)" . Plant Systematics and Evolution, vol. 296, no. 3-4, 2011, pp. 225-230.
http://dx.doi.org/10.1007/s00606-011-0489-0
---------- VANCOUVER ----------
López, A., Panseri, A.F., Poggio, L., Fernández, A. Nuclear DNA content in the polyploid complex Turnera ulmifolia (Turnera L., Passifloraceae). Plant Syst. Evol. 2011;296(3-4):225-230.
http://dx.doi.org/10.1007/s00606-011-0489-0