Diversity and extracellular enzymatic activities of yeasts isolated from King George Island, the sub-Antarctic region
Background: Antarctica has been successfully colonized by microorganisms despite presenting adverse conditions for life such as low temperatures, high solar radiation, low nutrient availability and dryness. Although these cold-loving microorganisms are recognized as primarily responsible for nutrien...
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ftunivchile:oai:repositorio.uchile.cl:2250/154986 2023-05-15T14:01:29+02:00 Diversity and extracellular enzymatic activities of yeasts isolated from King George Island, the sub-Antarctic region Carrasco, Mario Rozas, Juan Manuel Barahona, Salvador Alcaíno Gorman, Jennifer Cifuentes Guzmán, Víctor Baeza Cancino, Marcelo 2012 application/pdf https://doi.org/10.1186/1471-2180-12-251 https://repositorio.uchile.cl/handle/2250/154986 en eng BMC Microbiology, Volumen 12, 14712180 doi:10.1186/1471-2180-12-251 https://repositorio.uchile.cl/handle/2250/154986 Attribution-NonCommercial-NoDerivs 3.0 Chile http://creativecommons.org/licenses/by-nc-nd/3.0/cl/ CC-BY-NC-ND BMC Microbiology Antarctic yeasts Extracellular enzyme activities Psychrophilic-psychrotolerant yeasts rDNA yeast identification Artículo de revista 2012 ftunivchile https://doi.org/10.1186/1471-2180-12-251 2022-09-24T23:50:15Z Background: Antarctica has been successfully colonized by microorganisms despite presenting adverse conditions for life such as low temperatures, high solar radiation, low nutrient availability and dryness. Although these cold-loving microorganisms are recognized as primarily responsible for nutrient and organic matter recycling/mineralization, the yeasts, in particular, remain poorly characterized and understood. The aim of this work was to study the yeast microbiota in soil and water samples collected on King George Island. Results: A high number of yeast isolates was obtained from 34 soil and 14 water samples. Molecular analyses based on rDNA sequences revealed 22 yeast species belonging to 12 genera, with Mrakia and Cryptococcus genera containing the highest species diversity. The species Sporidiobolus salmonicolor was by far the most ubiquitous, being identified in 24 isolates from 13 different samples. Most of the yeasts were psychrotolerant and ranged widely in their ability to Article in Journal/Newspaper Antarc* Antarctic Antarctica King George Island Universidad de Chile: Repositorio académico Antarctic King George Island BMC Microbiology 12 1 251 |
institution |
Open Polar |
collection |
Universidad de Chile: Repositorio académico |
op_collection_id |
ftunivchile |
language |
English |
topic |
Antarctic yeasts Extracellular enzyme activities Psychrophilic-psychrotolerant yeasts rDNA yeast identification |
spellingShingle |
Antarctic yeasts Extracellular enzyme activities Psychrophilic-psychrotolerant yeasts rDNA yeast identification Carrasco, Mario Rozas, Juan Manuel Barahona, Salvador Alcaíno Gorman, Jennifer Cifuentes Guzmán, Víctor Baeza Cancino, Marcelo Diversity and extracellular enzymatic activities of yeasts isolated from King George Island, the sub-Antarctic region |
topic_facet |
Antarctic yeasts Extracellular enzyme activities Psychrophilic-psychrotolerant yeasts rDNA yeast identification |
description |
Background: Antarctica has been successfully colonized by microorganisms despite presenting adverse conditions for life such as low temperatures, high solar radiation, low nutrient availability and dryness. Although these cold-loving microorganisms are recognized as primarily responsible for nutrient and organic matter recycling/mineralization, the yeasts, in particular, remain poorly characterized and understood. The aim of this work was to study the yeast microbiota in soil and water samples collected on King George Island. Results: A high number of yeast isolates was obtained from 34 soil and 14 water samples. Molecular analyses based on rDNA sequences revealed 22 yeast species belonging to 12 genera, with Mrakia and Cryptococcus genera containing the highest species diversity. The species Sporidiobolus salmonicolor was by far the most ubiquitous, being identified in 24 isolates from 13 different samples. Most of the yeasts were psychrotolerant and ranged widely in their ability to |
format |
Article in Journal/Newspaper |
author |
Carrasco, Mario Rozas, Juan Manuel Barahona, Salvador Alcaíno Gorman, Jennifer Cifuentes Guzmán, Víctor Baeza Cancino, Marcelo |
author_facet |
Carrasco, Mario Rozas, Juan Manuel Barahona, Salvador Alcaíno Gorman, Jennifer Cifuentes Guzmán, Víctor Baeza Cancino, Marcelo |
author_sort |
Carrasco, Mario |
title |
Diversity and extracellular enzymatic activities of yeasts isolated from King George Island, the sub-Antarctic region |
title_short |
Diversity and extracellular enzymatic activities of yeasts isolated from King George Island, the sub-Antarctic region |
title_full |
Diversity and extracellular enzymatic activities of yeasts isolated from King George Island, the sub-Antarctic region |
title_fullStr |
Diversity and extracellular enzymatic activities of yeasts isolated from King George Island, the sub-Antarctic region |
title_full_unstemmed |
Diversity and extracellular enzymatic activities of yeasts isolated from King George Island, the sub-Antarctic region |
title_sort |
diversity and extracellular enzymatic activities of yeasts isolated from king george island, the sub-antarctic region |
publishDate |
2012 |
url |
https://doi.org/10.1186/1471-2180-12-251 https://repositorio.uchile.cl/handle/2250/154986 |
geographic |
Antarctic King George Island |
geographic_facet |
Antarctic King George Island |
genre |
Antarc* Antarctic Antarctica King George Island |
genre_facet |
Antarc* Antarctic Antarctica King George Island |
op_source |
BMC Microbiology |
op_relation |
BMC Microbiology, Volumen 12, 14712180 doi:10.1186/1471-2180-12-251 https://repositorio.uchile.cl/handle/2250/154986 |
op_rights |
Attribution-NonCommercial-NoDerivs 3.0 Chile http://creativecommons.org/licenses/by-nc-nd/3.0/cl/ |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1186/1471-2180-12-251 |
container_title |
BMC Microbiology |
container_volume |
12 |
container_issue |
1 |
container_start_page |
251 |
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1766271328038420480 |