Genetic structure of disjunct Argentinean populations of the subtropical tree <i>Anadenanthera colubrina</i> var. <i>cebil</i> (Fabaceae)

<i>Anadenanthera colubrina</i> var. <i>cebil</i> 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...

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Autores principales: Barrandeguy, María Eugenia, García, María Victoria, Prinz, Kathleen, Rivera Pomar, Rolando Víctor, Finkeldey, Reiner
Formato: Articulo
Lenguaje:Inglés
Publicado: 2014
Materias:
Ciencias Exactas
Botánica
Curupay
Chloroplast haplotypes
Genetic structure
Microsatellites
Seasonally dry tropical forests (SDTFs)
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/136529
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-136529
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Botánica
Curupay
Chloroplast haplotypes
Genetic structure
Microsatellites
Seasonally dry tropical forests (SDTFs)
spellingShingle Ciencias Exactas
Botánica
Curupay
Chloroplast haplotypes
Genetic structure
Microsatellites
Seasonally dry tropical forests (SDTFs)
Barrandeguy, María Eugenia
García, María Victoria
Prinz, Kathleen
Rivera Pomar, Rolando Víctor
Finkeldey, Reiner
Genetic structure of disjunct Argentinean populations of the subtropical tree <i>Anadenanthera colubrina</i> var. <i>cebil</i> (Fabaceae)
topic_facet Ciencias Exactas
Botánica
Curupay
Chloroplast haplotypes
Genetic structure
Microsatellites
Seasonally dry tropical forests (SDTFs)
description <i>Anadenanthera colubrina</i> var. <i>cebil</i> 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 <i>A. colubrina</i> var. <i>cebil</i> 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 (F<sub>ST</sub> 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.
format Articulo
Articulo
author Barrandeguy, María Eugenia
García, María Victoria
Prinz, Kathleen
Rivera Pomar, Rolando Víctor
Finkeldey, Reiner
author_facet Barrandeguy, María Eugenia
García, María Victoria
Prinz, Kathleen
Rivera Pomar, Rolando Víctor
Finkeldey, Reiner
author_sort Barrandeguy, María Eugenia
title Genetic structure of disjunct Argentinean populations of the subtropical tree <i>Anadenanthera colubrina</i> var. <i>cebil</i> (Fabaceae)
title_short Genetic structure of disjunct Argentinean populations of the subtropical tree <i>Anadenanthera colubrina</i> var. <i>cebil</i> (Fabaceae)
title_full Genetic structure of disjunct Argentinean populations of the subtropical tree <i>Anadenanthera colubrina</i> var. <i>cebil</i> (Fabaceae)
title_fullStr Genetic structure of disjunct Argentinean populations of the subtropical tree <i>Anadenanthera colubrina</i> var. <i>cebil</i> (Fabaceae)
title_full_unstemmed Genetic structure of disjunct Argentinean populations of the subtropical tree <i>Anadenanthera colubrina</i> var. <i>cebil</i> (Fabaceae)
title_sort genetic structure of disjunct argentinean populations of the subtropical tree <i>anadenanthera colubrina</i> var. <i>cebil</i> (fabaceae)
publishDate 2014
url http://sedici.unlp.edu.ar/handle/10915/136529
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