Publicado

2013-01-01

DIVERSITY AND GENETIC STRUCTURE OF THE MONOTYPIC GENUS Colombobalanus (FAGACEAE) IN SOUTHEAST OF COLOMBIAN ANDEANS

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Conservation genetics, microsatellites, endemic species, population genetics, tropical trees (es)

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Autores/as

  • Natalia Aguirre-Acosta Universidad de Caldas, Centro Nacional de Investigaciones de Café CENICAFE
  • Juan Palacio-Mejía
  • Dora Barrios-Leal
  • Jorge Botero-Echeverry
Colombobalanus is a genus with a single species Colombobalanus excelsa, currently
categorized as vulnerable (VU) and known from only five localities in the Colombian
Andes. We analyzed the diversity and genetic structure of four C. excelsa forest
remnants in one locality in the coffee-producing area of the southeastern corner of
Department of Huila, Colombia. Samples from ten trees were collected from each forest
remnant for a total of 40 sample leaves, which were analyzed using 7 microsatellite
markers. The resulting data matrix was used to perform genetic diversity (He), genetic
structure (FST), and genetic distance analyses, as well as the Jaccard similarity index.
Fourteen alleles were found for the entire population, with a heterozygosity (He) of
0.2797 and a genetic structure (FST) of 0.049. These indices suggest that the forest
remnants are members of a panmictic population with historical patterns of genetic
flow. The results also allow us to conclude that the low number of alleles found in
these populations compared with other populations in the country show a signature of
historical bottleneck in these forest remnants, where few individuals were seedlings
of C. excelsa due to the disturbances caused by human activity

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DIVERSITY AND GENETIC STRUCTURE OF THE MONOTYPIC GENUS Colombobalanus (FAGACEAE) IN SOUTHEAST OF COLOMBIAN ANDEANS. (2013). Caldasia, 35(1). https://revistas.unal.edu.co/index.php/cal/article/view/39101