Yeasts from glacial ice of Patagonian Andes, Argentina
| Autor: | Silvia Brizzio, Virginia de Garcia, María van Broock |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Starch
Otras Ciencias Biológicas Microorganism Argentina Biodiversity Biology Applied Microbiology and Biotechnology Microbiology Decomposer Ciencias Biológicas purl.org/becyt/ford/1 [https] chemistry.chemical_compound Nutrient Yeasts Botany Ice Cover Organic matter purl.org/becyt/ford/1.6 [https] DNA Fungal Mycological Typing Techniques Psychrophile Phylogeny chemistry.chemical_classification ARGENTINA Ecology PERITO MORENO YEASTS Yeast Cold Temperature PATAGONIA chemistry PSYCHROTOLERANTS CIENCIAS NATURALES Y EXACTAS |
| Zdroj: | CONICET Digital (CONICET) Consejo Nacional de Investigaciones Científicas y Técnicas instacron:CONICET |
| ISSN: | 0168-6496 |
| DOI: | 10.1111/j.1574-6941.2012.01470.x |
| Popis: | Glacial ice and snow are known habitats for cold-adapted microorganisms. Research on cold-adapted yeast biodiversity from Perito Moreno and Mount Tronador glaciers (Patagonia, Argentina), and production of extracellular enzymatic activity at low temperatures (5 and 18 °C), was performed and described in this study. Ninety percent (90%) of the isolates were basidiomycetous; 16 genera and 29 species were identified. Twenty-five percent (25%) of total isolates corresponded to psychrophilic yeasts, whereas 75% were psychrotolerant yeasts. Eighty-five percent (85%) of all isolates had at least one enzymatic activity. Multiple correspondence analysis and cluster classification revealed a relationship between certain genera and some enzymatic activities. Cold-adapted yeast isolates were able to hydrolyze natural compounds (casein, lipids, starch, pectin, and carboxymethylcellulose) at low temperatures, suggesting a significant ecological role of these organisms as organic matter decomposers and nutrient cyclers. These yeasts are especially relevant for metabolic and ecological studies, as well as for yeast-based biotechnological process at low temperatures. © 2012 Federation of European Microbiological Societies. Published by Blackwell Publishing Ltd. Fil: de Garcia, Virginia. 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: Brizzio, Silvia Beatriz. 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: Giraudo, Maria Rosa. 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 |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text