Polyphenolic substrates and dyes degradation by yeasts from 25 de Mayo/King George Island (Antarctica)
Abstract Antarctica offers a range of extreme climatic conditions, such as low temperatures, high solar radiation and low nutrient availability, and constitutes one of the harshest environments on Earth. Despite that, it has been successfully colonized by 'cold‐loving' fungi, which play a...
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crwiley:10.1002/yea.2982 2024-06-23T07:47:15+00:00 Polyphenolic substrates and dyes degradation by yeasts from 25 de Mayo/King George Island (Antarctica) Rovati, José I. Pajot, Hipólito F. Ruberto, Lucas Mac Cormack, Walter Figueroa, Lucía I. C. 2013 http://dx.doi.org/10.1002/yea.2982 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fyea.2982 https://onlinelibrary.wiley.com/doi/pdf/10.1002/yea.2982 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Yeast volume 30, issue 11, page 459-470 ISSN 0749-503X 1097-0061 journal-article 2013 crwiley https://doi.org/10.1002/yea.2982 2024-06-13T04:20:46Z Abstract Antarctica offers a range of extreme climatic conditions, such as low temperatures, high solar radiation and low nutrient availability, and constitutes one of the harshest environments on Earth. Despite that, it has been successfully colonized by 'cold‐loving' fungi, which play a key role in decomposition cycles in cold ecosystems. However, knowledge about the ecological role of yeasts in nutrient or organic matter recycling/mineralization remains highly fragmentary. The aim of this work was to study the yeast microbiota in samples collected on 25 de Mayo/King George Island regarding the scope of their ability to degrade polyphenolic substrates such as lignin and azo dyes. Sixty‐one yeast isolates were obtained from 37 samples, including soil, rocks, wood and bones. Molecular analyses based on rDNA sequences revealed that 35 yeasts could be identified at the species level and could be classified in the genera Leucosporidiella , Rhodotorula , Cryptococcus, Bullera and Candida . Cryptococcus victoriae was by far the most ubiquitous species. In total, 33% of the yeast isolates examined showed significant activity for dye decolorization, 25% for laccase activity and 38% for ligninolytic activity. Eleven yeasts did not show positive activity in any of the assays performed and no isolates showed positive activity across all tested substrates. A high diversity of yeasts were isolated in this work, possibly including undescribed species and conspicuous Antarctic yeasts, most of them belonging to oligotrophic, slow‐growing and metabolically diverse basidiomycetous genera. Copyright © 2013 John Wiley & Sons, Ltd. Article in Journal/Newspaper Antarc* Antarctic Antarctica Cryptococcus victoriae King George Island Wiley Online Library 25 de Mayo ENVELOPE(-58.000,-58.000,-62.083,-62.083) Antarctic King George Island Yeast 30 11 459 470 |
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Open Polar |
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Wiley Online Library |
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English |
description |
Abstract Antarctica offers a range of extreme climatic conditions, such as low temperatures, high solar radiation and low nutrient availability, and constitutes one of the harshest environments on Earth. Despite that, it has been successfully colonized by 'cold‐loving' fungi, which play a key role in decomposition cycles in cold ecosystems. However, knowledge about the ecological role of yeasts in nutrient or organic matter recycling/mineralization remains highly fragmentary. The aim of this work was to study the yeast microbiota in samples collected on 25 de Mayo/King George Island regarding the scope of their ability to degrade polyphenolic substrates such as lignin and azo dyes. Sixty‐one yeast isolates were obtained from 37 samples, including soil, rocks, wood and bones. Molecular analyses based on rDNA sequences revealed that 35 yeasts could be identified at the species level and could be classified in the genera Leucosporidiella , Rhodotorula , Cryptococcus, Bullera and Candida . Cryptococcus victoriae was by far the most ubiquitous species. In total, 33% of the yeast isolates examined showed significant activity for dye decolorization, 25% for laccase activity and 38% for ligninolytic activity. Eleven yeasts did not show positive activity in any of the assays performed and no isolates showed positive activity across all tested substrates. A high diversity of yeasts were isolated in this work, possibly including undescribed species and conspicuous Antarctic yeasts, most of them belonging to oligotrophic, slow‐growing and metabolically diverse basidiomycetous genera. Copyright © 2013 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Rovati, José I. Pajot, Hipólito F. Ruberto, Lucas Mac Cormack, Walter Figueroa, Lucía I. C. |
spellingShingle |
Rovati, José I. Pajot, Hipólito F. Ruberto, Lucas Mac Cormack, Walter Figueroa, Lucía I. C. Polyphenolic substrates and dyes degradation by yeasts from 25 de Mayo/King George Island (Antarctica) |
author_facet |
Rovati, José I. Pajot, Hipólito F. Ruberto, Lucas Mac Cormack, Walter Figueroa, Lucía I. C. |
author_sort |
Rovati, José I. |
title |
Polyphenolic substrates and dyes degradation by yeasts from 25 de Mayo/King George Island (Antarctica) |
title_short |
Polyphenolic substrates and dyes degradation by yeasts from 25 de Mayo/King George Island (Antarctica) |
title_full |
Polyphenolic substrates and dyes degradation by yeasts from 25 de Mayo/King George Island (Antarctica) |
title_fullStr |
Polyphenolic substrates and dyes degradation by yeasts from 25 de Mayo/King George Island (Antarctica) |
title_full_unstemmed |
Polyphenolic substrates and dyes degradation by yeasts from 25 de Mayo/King George Island (Antarctica) |
title_sort |
polyphenolic substrates and dyes degradation by yeasts from 25 de mayo/king george island (antarctica) |
publisher |
Wiley |
publishDate |
2013 |
url |
http://dx.doi.org/10.1002/yea.2982 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fyea.2982 https://onlinelibrary.wiley.com/doi/pdf/10.1002/yea.2982 |
long_lat |
ENVELOPE(-58.000,-58.000,-62.083,-62.083) |
geographic |
25 de Mayo Antarctic King George Island |
geographic_facet |
25 de Mayo Antarctic King George Island |
genre |
Antarc* Antarctic Antarctica Cryptococcus victoriae King George Island |
genre_facet |
Antarc* Antarctic Antarctica Cryptococcus victoriae King George Island |
op_source |
Yeast volume 30, issue 11, page 459-470 ISSN 0749-503X 1097-0061 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/yea.2982 |
container_title |
Yeast |
container_volume |
30 |
container_issue |
11 |
container_start_page |
459 |
op_container_end_page |
470 |
_version_ |
1802651342306541568 |