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Artículo

Karyotype and AFLP data reveal the phylogenetic position of the Brazilian endemic Hypochaeris catharinensis (Asteraceae)

Reck, Maikel; Benício, Lucas M.; Ruas, Eduardo Augusto; Alves Rodrigues, Luana; Ruas, Paulo Maurício; Ortiz, María A.; Talavera, Salvador; Urtubey, EstrellaIcon ; Stuessy, Tod; Weiss Schneeweiss, Hanna; Tremetsberger, Karin; Michelan, Vanessa S.; Matzenbacher, Nelson Ivo; Vanzela, André L. L.; Terrab, Anass; Samuel, Rose; Ruas, Claudete Fátima
Fecha de publicación: 10/2011
Editorial: Springer Wien
Revista: Plant Systematics and Evolution
ISSN: 0378-2697
e-ISSN: 1615-6110
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Ciencias Biológicas

Resumen

The genus Hypochaeris offers an excellent model for studies of recent adaptive radiation in the South American continent. We used karyotype analysis with chromomycin A3 (CMA3)/4',6-diamidino-2-phenylindole (DAPI) banding and fluorescence in situ hybridization (FISH), and amplified fragment length polymorphism (AFLP) fingerprinting to investigate for the first time the Brazilian endemic H. catharinensis and define its position within the South American group of species. Strong CMA-positive signals were seen at the end of both arms of chromosome 3 and at the end of the long arm of chromosome 4. DAPI bands were only detected in subterminal position on short arm of chromosome 4. FISH with 5S and 35S ribosomal DNA (rDNA) probes revealed a single 5S rDNA locus on short arm of chromosome 2, typical for all other South American Hypochaeris taxa analyzed to date. The 35S rDNA locus was identified at subterminal position on the short arm of chromosome 3, as reported so far for only two of the known species (H. lutea and H. patagonica). The AFLP study included 55 individuals, comprising nine species of the South American Hypochaeris plus their putative ancestor H. angustifolia. Eleven AFLP primer combinations generated a total of 401 fragments, of which 388 (96.7%) were polymorphic. High genetic similarities were observed among taxa, with all South American Hypochaeris species falling into one main cluster [100% bootstrap (BS)]. Hypochaeris catharinensis is closely related to H. lutea (82% BS), forming a well-separated subcluster within the South American species. Taken together, the karyological and AFLP data contribute to the placement of H. catharinensis within the phylogenetic framework of South American species of Hypochaeris and allow the definition of a novel and well-resolved phylogenetic group (the Lutea group).
Palabras clave: Aflp , Asteraceae , Cytogenetics , Fish , Hypochaeris Catharinensis , Phylogeny
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info:eu-repo/semantics/restrictedAccess 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)
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URI: http://hdl.handle.net/11336/68608
URL: https://link.springer.com/article/10.1007/s00606-011-0490-7
DOI: https://doi.org/10.1007/s00606-011-0490-7
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Articulos de INST.DE BOTANICA DARWINION (I)
Citación
Reck, Maikel; Benício, Lucas M.; Ruas, Eduardo Augusto; Alves Rodrigues, Luana; Ruas, Paulo Maurício; et al.; Karyotype and AFLP data reveal the phylogenetic position of the Brazilian endemic Hypochaeris catharinensis (Asteraceae); Springer Wien; Plant Systematics and Evolution; 296; 3-4; 10-2011; 231-243
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