Polyphenolic substrates and dyes degradation by yeasts from 25 de Mayo/King George Island (Antarctica)
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...
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ftconicet:oai:ri.conicet.gov.ar:11336/1732 2023-10-09T21:44:58+02:00 Polyphenolic substrates and dyes degradation by yeasts from 25 de Mayo/King George Island (Antarctica) Rovati, Jose Ignacio Pajot, Hipólito Fernando Ruberto, Lucas Adolfo Mauro Mac Cormack, Walter Patricio Castellanos de Figueroa, Lucia Ines application/pdf http://hdl.handle.net/11336/1732 eng eng John Wiley & Sons Ltd info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/yea.2982/pdf info:eu-repo/semantics/altIdentifier/doi/DOI:10.1002/yea.2982 http://hdl.handle.net/11336/1732 Rovati, Jose Ignacio; Pajot, Hipólito Fernando; Ruberto, Lucas Adolfo Mauro; Mac Cormack, Walter Patricio; Castellanos de Figueroa, Lucia Ines; Polyphenolic substrates and dyes degradation by yeasts from 25 de Mayo/King George Island (Antarctica); John Wiley & Sons Ltd; Yeast; 30; 11; 7-10-2013; 459-470 0749-503X info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ ANTARCTIC YEASTS EXTRACELLULAR ENZYME ACTIVITIES PSYCHROPHILIC-PSYCHROTOLERANT YEASTS RDNA YEAST IDENTIFICATION https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1002/yea.2982 2023-09-24T19:48:19Z 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. Fil: Rovati, Jose Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; Argentina Fil: Pajot, Hipólito Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; Argentina Fil: Ruberto, Lucas Adolfo Mauro. Universidad ... Article in Journal/Newspaper Antarc* Antarctic Antarctica Cryptococcus victoriae King George Island CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Antarctic King George Island Argentina Tucumán ENVELOPE(-63.200,-63.200,-64.683,-64.683) 25 de Mayo ENVELOPE(-58.000,-58.000,-62.083,-62.083) Hipólito ENVELOPE(-64.246,-64.246,-65.239,-65.239) Yeast 30 11 459 470 |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
ANTARCTIC YEASTS EXTRACELLULAR ENZYME ACTIVITIES PSYCHROPHILIC-PSYCHROTOLERANT YEASTS RDNA YEAST IDENTIFICATION https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
spellingShingle |
ANTARCTIC YEASTS EXTRACELLULAR ENZYME ACTIVITIES PSYCHROPHILIC-PSYCHROTOLERANT YEASTS RDNA YEAST IDENTIFICATION https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 Rovati, Jose Ignacio Pajot, Hipólito Fernando Ruberto, Lucas Adolfo Mauro Mac Cormack, Walter Patricio Castellanos de Figueroa, Lucia Ines Polyphenolic substrates and dyes degradation by yeasts from 25 de Mayo/King George Island (Antarctica) |
topic_facet |
ANTARCTIC YEASTS EXTRACELLULAR ENZYME ACTIVITIES PSYCHROPHILIC-PSYCHROTOLERANT YEASTS RDNA YEAST IDENTIFICATION https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
description |
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. Fil: Rovati, Jose Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; Argentina Fil: Pajot, Hipólito Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; Argentina Fil: Ruberto, Lucas Adolfo Mauro. Universidad ... |
format |
Article in Journal/Newspaper |
author |
Rovati, Jose Ignacio Pajot, Hipólito Fernando Ruberto, Lucas Adolfo Mauro Mac Cormack, Walter Patricio Castellanos de Figueroa, Lucia Ines |
author_facet |
Rovati, Jose Ignacio Pajot, Hipólito Fernando Ruberto, Lucas Adolfo Mauro Mac Cormack, Walter Patricio Castellanos de Figueroa, Lucia Ines |
author_sort |
Rovati, Jose Ignacio |
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 |
John Wiley & Sons Ltd |
url |
http://hdl.handle.net/11336/1732 |
long_lat |
ENVELOPE(-63.200,-63.200,-64.683,-64.683) ENVELOPE(-58.000,-58.000,-62.083,-62.083) ENVELOPE(-64.246,-64.246,-65.239,-65.239) |
geographic |
Antarctic King George Island Argentina Tucumán 25 de Mayo Hipólito |
geographic_facet |
Antarctic King George Island Argentina Tucumán 25 de Mayo Hipólito |
genre |
Antarc* Antarctic Antarctica Cryptococcus victoriae King George Island |
genre_facet |
Antarc* Antarctic Antarctica Cryptococcus victoriae King George Island |
op_relation |
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/yea.2982/pdf info:eu-repo/semantics/altIdentifier/doi/DOI:10.1002/yea.2982 http://hdl.handle.net/11336/1732 Rovati, Jose Ignacio; Pajot, Hipólito Fernando; Ruberto, Lucas Adolfo Mauro; Mac Cormack, Walter Patricio; Castellanos de Figueroa, Lucia Ines; Polyphenolic substrates and dyes degradation by yeasts from 25 de Mayo/King George Island (Antarctica); John Wiley & Sons Ltd; Yeast; 30; 11; 7-10-2013; 459-470 0749-503X |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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_ |
1779314999609524224 |