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Artículo

Cytogenetic studies of four South American species of Paullinia L. (Sapindaceae)

Urdampilleta, Juan DomingoIcon ; Ferrucci, María SilviaIcon ; Vanzela, André
Fecha de publicación: 07/2007
Editorial: Oxford University Press
Revista: Botanical Journal of The Linnean Society
ISSN: 0024-4074
e-ISSN: 1095-83
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Ciencias de las Plantas, Botánica

Resumen

Four South American species of Paullinia (P. elegans, P. meliaefolia, P. pinnata, and P. rhomboidea) were compared using conventional chromosome staining, C-Giemsa and C-chromomycin A3/4′,6-diamidino-2-phenylindole (C-CMA3/DAPI) banding, and fluorescence in situ hybridization (FISH) with a 45S ribosomal DNA (rDNA) probe. All species showed a somatic complement of 2n = 24 chromosomes, agreeing with earlier records in some cases, and showing a tendency for the chromosome number to be conserved in this genus. The chromosome number of P. rhomboidea is a new report. The karyotypes differed in chromosome size and degree of karyotype asymmetry. The chromosomal band patterns and location of the 45S rDNA sites are reported for the first time in the genus. Terminal C-CMA3 bands were associated with the 45S rDNA sites, but varied in number and size between the species. The occurrence of other C-Giemsa bands that were not revealed by CMA3 suggests that more than one family of repetitive DNA may be involved in karyotype differentiation. The systematic implications of these results on the infrageneric relationships are discussed.
Palabras clave: Sapindaceae , Paullinia , Cariotipos , 45s Rdna , C-Chromomycin A3/ 4′, 6-Diamidino-2-Phenylindole (C-Cma3/Dapi) , Chromosomes , Fluorescence in Situ Hybridization (Fish) , Heterochromatin , Karyotype Symmetry
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/44800
DOI: http://dx.doi.org/10.1111/j.1095-8339.2007.00661.x
URL: https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1095-8339.2007.00661.x
URL: https://academic.oup.com/botlinnean/article/154/3/313/2420272
Colecciones
Articulos(IBONE)
Articulos de INST.DE BOTANICA DEL NORDESTE (I)
Citación
Urdampilleta, Juan Domingo; Ferrucci, María Silvia; Vanzela, André; Cytogenetic studies of four South American species of Paullinia L. (Sapindaceae); Oxford University Press; Botanical Journal of The Linnean Society; 154; 3; 7-2007; 313-320
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