The diversity, extracellular enzymatic activities and photoprotective compounds of yeasts isolated in Antarctica
The diversity of yeasts collected from different sites in Antarctica (Admiralty Bay, King George Island and Port Foster Bay and Deception Island) and their ability to produce extracellular enzymes and mycosporines were studied. Samples were collected during the austral summer season, between Novembe...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Sociedade Brasileira de Microbiologia
2011
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3768797/ https://www.ncbi.nlm.nih.gov/pubmed/24031709 http://dx.doi.org/10.1590/S1517-838220110003000012 |
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author | Vaz, Aline B. M. Rosa, Luiz H. Vieira, Mariana L. A. de Garcia, Virginia Brandão, Luciana R. Teixeira, Lia C. R. S. Moliné, Martin Libkind, Diego van Broock, Maria Rosa, Carlos A. |
author_facet | Vaz, Aline B. M. Rosa, Luiz H. Vieira, Mariana L. A. de Garcia, Virginia Brandão, Luciana R. Teixeira, Lia C. R. S. Moliné, Martin Libkind, Diego van Broock, Maria Rosa, Carlos A. |
author_sort | Vaz, Aline B. M. |
collection | PubMed |
description | The diversity of yeasts collected from different sites in Antarctica (Admiralty Bay, King George Island and Port Foster Bay and Deception Island) and their ability to produce extracellular enzymes and mycosporines were studied. Samples were collected during the austral summer season, between November 2006 and January 2007, from the rhizosphere of Deschampsia antarctica, ornithogenic (penguin guano) soil, soil, marine and lake sediments, marine water and freshwater from lakes. A total of 89 isolates belonging to the following genera were recovered: Bensingtonia, Candida, Cryptococcus, Debaryomyces, Dioszegia, Exophiala, Filobasidium, Issatchenkia (Pichia), Kodamaea, Leucosporidium, Leucosporidiella, Metschnikowia, Nadsonia, Pichia, Rhodotorula, and Sporidiobolus, and the yeast-like fungi Aureobasidium, Leuconeurospora and Microglossum. Cryptococcus victoriae was the most frequently identified species. Several species isolated in our study have been previously reported to be Antarctic psychophilic yeasts, including Cr. antarcticus, Cr. victoriae, Dioszegia hungarica and Leucosporidium scottii. The cosmopolitan yeast species A. pullulans, C. zeylanoides, D. hansenii, I. orientalis, K. ohmeri, P. guilliermondii, Rh. mucilaginosa, and S. salmonicolor were also isolated. Five possible new species were identified. Sixty percent of the yeasts had at least one detectable extracellular enzymatic activity. Cryptococcus antarcticus, D. aurantiaca, D. crocea, D. hungarica, Dioszegia sp., E. xenobiotica, Rh. glaciales, Rh. laryngis, Microglossum sp. 1 and Microglossum sp. 2 produced mycosporines. Of the yeast isolates, 41.7% produced pigments and/or mycosporines and could be considered adapted to survive in Antarctica. Most of the yeasts had extracellular enzymatic activities at 4°C and 20°C, indicating that they could be metabolically active in the sampled substrates. |
format | Online Article Text |
id | pubmed-3768797 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2011 |
publisher | Sociedade Brasileira de Microbiologia |
record_format | MEDLINE/PubMed |
spelling | pubmed-37687972013-09-12 The diversity, extracellular enzymatic activities and photoprotective compounds of yeasts isolated in Antarctica Vaz, Aline B. M. Rosa, Luiz H. Vieira, Mariana L. A. de Garcia, Virginia Brandão, Luciana R. Teixeira, Lia C. R. S. Moliné, Martin Libkind, Diego van Broock, Maria Rosa, Carlos A. Braz J Microbiol Environmental Microbiology The diversity of yeasts collected from different sites in Antarctica (Admiralty Bay, King George Island and Port Foster Bay and Deception Island) and their ability to produce extracellular enzymes and mycosporines were studied. Samples were collected during the austral summer season, between November 2006 and January 2007, from the rhizosphere of Deschampsia antarctica, ornithogenic (penguin guano) soil, soil, marine and lake sediments, marine water and freshwater from lakes. A total of 89 isolates belonging to the following genera were recovered: Bensingtonia, Candida, Cryptococcus, Debaryomyces, Dioszegia, Exophiala, Filobasidium, Issatchenkia (Pichia), Kodamaea, Leucosporidium, Leucosporidiella, Metschnikowia, Nadsonia, Pichia, Rhodotorula, and Sporidiobolus, and the yeast-like fungi Aureobasidium, Leuconeurospora and Microglossum. Cryptococcus victoriae was the most frequently identified species. Several species isolated in our study have been previously reported to be Antarctic psychophilic yeasts, including Cr. antarcticus, Cr. victoriae, Dioszegia hungarica and Leucosporidium scottii. The cosmopolitan yeast species A. pullulans, C. zeylanoides, D. hansenii, I. orientalis, K. ohmeri, P. guilliermondii, Rh. mucilaginosa, and S. salmonicolor were also isolated. Five possible new species were identified. Sixty percent of the yeasts had at least one detectable extracellular enzymatic activity. Cryptococcus antarcticus, D. aurantiaca, D. crocea, D. hungarica, Dioszegia sp., E. xenobiotica, Rh. glaciales, Rh. laryngis, Microglossum sp. 1 and Microglossum sp. 2 produced mycosporines. Of the yeast isolates, 41.7% produced pigments and/or mycosporines and could be considered adapted to survive in Antarctica. Most of the yeasts had extracellular enzymatic activities at 4°C and 20°C, indicating that they could be metabolically active in the sampled substrates. Sociedade Brasileira de Microbiologia 2011 2011-09-01 /pmc/articles/PMC3768797/ /pubmed/24031709 http://dx.doi.org/10.1590/S1517-838220110003000012 Text en © Sociedade Brasileira de Microbiologia http://creativecommons.org/licenses/by-nc/3.0/ All the content of the journal, except where otherwise noted, is licensed under a Creative Commons License |
spellingShingle | Environmental Microbiology Vaz, Aline B. M. Rosa, Luiz H. Vieira, Mariana L. A. de Garcia, Virginia Brandão, Luciana R. Teixeira, Lia C. R. S. Moliné, Martin Libkind, Diego van Broock, Maria Rosa, Carlos A. The diversity, extracellular enzymatic activities and photoprotective compounds of yeasts isolated in Antarctica |
title | The diversity, extracellular enzymatic activities and photoprotective compounds of yeasts isolated in Antarctica |
title_full | The diversity, extracellular enzymatic activities and photoprotective compounds of yeasts isolated in Antarctica |
title_fullStr | The diversity, extracellular enzymatic activities and photoprotective compounds of yeasts isolated in Antarctica |
title_full_unstemmed | The diversity, extracellular enzymatic activities and photoprotective compounds of yeasts isolated in Antarctica |
title_short | The diversity, extracellular enzymatic activities and photoprotective compounds of yeasts isolated in Antarctica |
title_sort | diversity, extracellular enzymatic activities and photoprotective compounds of yeasts isolated in antarctica |
topic | Environmental Microbiology |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3768797/ https://www.ncbi.nlm.nih.gov/pubmed/24031709 http://dx.doi.org/10.1590/S1517-838220110003000012 |
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