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Abstract:

Anadenanthera colubrina var. cebil is a native South American tree species inhabiting seasonally dry tropical forests (SDTFs). Its current disjunct distribution presumably represents fragments of a historical much larger area of this forest type, which has also been highly impacted by human activities. In this way the hypothesis of this study is that the natural populations of A. colubrina var. cebil from Northern Argentina represent vestiges of ancient fragmentation, but they are additionally influenced by a certain degree of gene flow among them. We aimed to analyze the genetic structure of both nuclear and chloroplast DNA to evaluate the relative role of ancient and recent fragmentation on intraspecific diversity patterns. Sixty-nine individuals of four natural populations were analyzed using eight nuclear microsatellites (ncSSR) and four chloroplast microsatellite loci (cpSSR). The level and distribution of genetic variation were estimated by standard population genetic parameters and Neighbor Joining as well as Bayesian analyses. The eight ncSSR loci were highly polymorphic, while genetic diversity of cpSSRs was low. Nuclear SSRs displayed lower genetic differentiation among populations than cpSSR haplotypes (FST 0.11 and 0.95, respectively). However, high differentiation between phytogeographic provinces was observed in both genomes. The high genetic differentiation detected emphasizes the role of ancient fragmentation. However, the Paranaense province also shows the effects of recent fragmentation on genetic structure, whereas gene flow by pollen preserves the effects of genetic drift in the Yungas province. © 2014 Springer-Verlag Wien.

Registro:

Documento: Artículo
Título:Genetic structure of disjunct Argentinean populations of the subtropical tree Anadenanthera colubrina var. cebil (Fabaceae)
Autor:Barrandeguy, M.E.; García, M.V.; Prinz, K.; Pomar, R.R.; Finkeldey, R.
Filiación:Departamento de Genética. Facultad de Ciencias Exactas, Químicas y Naturales, Universidad Nacional de Misiones, Posadas, 3300, Argentina
Instituto de Biología Subtropical (UNaM-CONICET), Posadas, 3300, Argentina
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET-Argentina), Buenos Aires, C1033AAJ, Argentina
Institute for Systematic Botany with Herbarium Haussknecht and Botanical Gardens, Friedrich-Schiller-University Jena, Jena, 07743, Germany
Forest Genetics and Forest Tree Breeding, Georg-August-University Göttingen, Göttingen, 37077, Germany
Laboratorio de Genetica y Genomica Funcional, Centro Regional de Estudios Genomicos, Universidad Nacional de La Plata, Av. Calchaquí 5900 4to. piso, 1888, Florencio Varela, Buenos Aires, Argentina
Idioma: Inglés
Palabras clave:Chloroplast haplotypes; Curupay; Genetic structure; Microsatellites; Seasonally dry tropical forests (SDTFs)
Año:2014
Página de inicio:1
Página de fin:13
DOI: http://dx.doi.org/10.1007/s00606-014-0995-y
Título revista:Plant Systematics and Evolution
Título revista abreviado:Plant Syst. Evol.
ISSN:03782697
CODEN:ESPFB
Registro:http://digital.bl.fcen.uba.ar/collection/paper/document/paper_03782697_v_n_p1_Barrandeguy

Citas:

---------- APA ----------
Barrandeguy, M.E., García, M.V., Prinz, K., Pomar, R.R. & Finkeldey, R. (2014) . Genetic structure of disjunct Argentinean populations of the subtropical tree Anadenanthera colubrina var. cebil (Fabaceae). Plant Systematics and Evolution, 1-13.
http://dx.doi.org/10.1007/s00606-014-0995-y
---------- CHICAGO ----------
Barrandeguy, M.E., García, M.V., Prinz, K., Pomar, R.R., Finkeldey, R. "Genetic structure of disjunct Argentinean populations of the subtropical tree Anadenanthera colubrina var. cebil (Fabaceae)" . Plant Systematics and Evolution (2014) : 1-13.
http://dx.doi.org/10.1007/s00606-014-0995-y
---------- MLA ----------
Barrandeguy, M.E., García, M.V., Prinz, K., Pomar, R.R., Finkeldey, R. "Genetic structure of disjunct Argentinean populations of the subtropical tree Anadenanthera colubrina var. cebil (Fabaceae)" . Plant Systematics and Evolution, 2014, pp. 1-13.
http://dx.doi.org/10.1007/s00606-014-0995-y
---------- VANCOUVER ----------
Barrandeguy, M.E., García, M.V., Prinz, K., Pomar, R.R., Finkeldey, R. Genetic structure of disjunct Argentinean populations of the subtropical tree Anadenanthera colubrina var. cebil (Fabaceae). Plant Syst. Evol. 2014:1-13.
http://dx.doi.org/10.1007/s00606-014-0995-y