Diversity and biogeographical patterns of yeast communities in Antarctic, Patagonian and tropical lakes

• Published in: Fungal Ecology
• Main Authors: Brandão, Luciana R., Vaz, Aline B.M., Espírito Santo, Lilia C., Pimenta, Raphael S., Morais, Paula B., Libkind Frati, Diego, Rosa, Luiz H., Rosa, Carlos A.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Elsevier
• Subjects: BIOGEOGRAPHY; DISTANCE DECAY; DIVERSITY; FRESHWATER; YEASTS; https://purl.org/becyt/ford/1.6; https://purl.org/becyt/ford/1; Antarctic; Patagonia; Argentina; Antarc*
• Online Access: http://hdl.handle.net/11336/65410

We investigated the distribution patterns of yeast communities in freshwater lakes along a latitudinal gradient in order to evaluate yeast biogeography at intercontinental (501–8000 km), regional (0–500 km) and local (0–1 km) geographical scales. We identified 285 yeast isolates belonging to 64 species based on sequence analysis of the ITS-5.8S region and the D1/D2 domains of the large subunit of rRNA genes. Distance decay analysis showed a significant negative slope curve at the intercontinental scale. At the intercontinental and regional scales, the dissimilarity of the yeast communities was correlated with geographical distance, with community similarity decreasing with increasing distance. The physiological profiles of the yeast communities from tropical and Patagonian lakes were similar but were different from those of Antarctic lakes. This is the first report of latitudinal patterns of lake yeast diversity along a gradient extending from Antarctic to tropical environments. Fil: Brandão, Luciana R. Universidade Federal de Minas Gerais; Brasil Fil: Vaz, Aline B.M. Universidade Federal de Minas Gerais; Brasil Fil: Espírito Santo, Lilia C. Universidade Federal de Minas Gerais; Brasil Fil: Pimenta, Raphael S. Universidade Federal do Tocantins; Brasil Fil: Morais, Paula B. Universidade Federal do Tocantins; Brasil Fil: Libkind Frati, Diego. Universidad Nacional del Comahue. Centro Regional Universidad de Bariloche. Departamento de Biología. Laboratorio de Microbiología Aplicada y Biotecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina Fil: Rosa, Luiz H. Universidade Federal de Minas Gerais; Brasil Fil: Rosa, Carlos A. Universidade Federal de Minas Gerais; Brasil