RESUMO
Se presenta el catálogo de la vegetación epifita vascular de un sector del Parque Nacional Natural Paramillo (PNNP) y zona amortiguadora (Córdoba, Colombia). Se realizaron muestreos en un área de 0,1 hectárea, donde se colectaron todas las epífitas vasculares distribuidas en los forófitos que presentaron un DAP > 2,5 cm en cuatro sectores, El Silencio (interior del PNNP), Tuis Tuis, Tuis Tuis Arriba y Alto de Chibogadó (zona amortiguadora), correspondientes al bosque húmedo tropical (Bh-T) en el municipio de Tierralta. Se encontraron 2504 individuos de epífitas vasculares. El catálogo contiene 73 especies distribuidas en 41 géneros y 18 familias. El sector Tuis Tuis presentó el mayor número de especies (33). Las familias mejor representadas corresponden a las Araceae, Bromeliaceae y Orchidaceae, destacándose por mayor número de especies y géneros la familia Orchidaceae (20/15). Los géneros más diversos fueron Anthurium con ocho especies, Guzmania seis, Tillandsia y Aechmea con cinco cada uno. Los helechos reúnen solo el 6 % de la flora epifita. Se reportan nuevos registros de especies para el departamento de Córdoba (39), ampliando el rango de distribución de este grupo de plantas en el país.
The catalogue of the vascular epiphyte vegetation of Silencio sector (Paramillo National Natural Park) and buffer zone (Córdoba) is showed. Sampling was conducted in an area of0,1 ha, collecting all vascular epiphytes distributed in phorophytes with a DAP> 2,5 cm, in four sectors. Collections were performed in the Silencio sectors (PNNP), Tuis Tuis, Tuis Tuis Arriba and Alto Chibogadó (buffer zone) of the tropical rain forest (Bh -T) in Tierralta town. 2504 individuals were recorded as vascular epiphytes. The catalog includes 73 species in 41 genera and 18 families. The sector Tuis Tuis showed the greatest representation of species (33). The families with the highest representation corresponds to Araceae, Bromeliaceae and Orchidaceae families. The Orchidaceae family had the highest diversity with 20 species and 15 genera. The most diverse genera were Anthurium with eight species, Guzmania with six species and Aechmea and Tillandsia with five species each one. Ferns are presented only in 6 % of the epiphytic plants. 39 new species records for the department of Córdoba-Colombia are reported, extending the range of distribution of this group of plants in the country.
RESUMO
Background: Breast cancer is the main cause of death among women between 40 and 55 years old, in whom the hereditary cases are common. Therefore, the molecular diagnosis of germ line mutations involved in breast cancer susceptibility is relevant. BRCA1 and BRCA2 have been described as the two major genes involved in familial breast/ovarian cancer. We are performing a screening of BRCA1 and BRCA2 genes, in a group of 50 high risk Chilean families for breast/ovarian cancer. We have detected a mutation, 3936 C>T, that leads to a truncated protein, in two affected women from one of the families in study. Aim: To report the results of the screening for 3936 C>T in healthy relatives of index women. Material and me-thods: The molecular diagnosis of this mutation was offered to the healthy members of this family, and 17 relatives accepted to be tested. The region of the BRCA1 gene that includes the 3936 C>T mutation, was analyzed through PCR amplification, digestion with restriction enzyme BstNI, and direct sequencing. Results: 3936 C>T DNA mutation was present in 8 relatives. Conclusions: Considering the high risk of having a mutation in the BRCA1 gene, specially in pre-menopausal women, the molecualr diagnosis, genetic and clinical counseling are highly relevant. In Chile the molecualr diagnosis is still not widely applied.