Occurrence of Soil Fungi in Antarctic Pristine Environments
The presence of fungi in pristine Antarctic soils is of particular interest because of the diversity of this microbial group. However, the extreme conditions that coexist in Antarctica produce a strong selective pressure that could lead to the evolution of novel mechanisms for stress tolerance by in...
Published in: | Frontiers in Bioengineering and Biotechnology |
---|---|
Main Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
FRONTIERS MEDIA SA
2021
|
Subjects: | |
Online Access: | http://repositoriodigital.uct.cl/handle/10925/3704 https://doi.org/10.3389/fbioe.2019.00028 |
id |
ftunivctemuco:oai:repositoriodigital.uct.cl:10925/3704 |
---|---|
record_format |
openpolar |
spelling |
ftunivctemuco:oai:repositoriodigital.uct.cl:10925/3704 2023-05-15T13:58:13+02:00 Occurrence of Soil Fungi in Antarctic Pristine Environments Duran, Paola Barra, Patricio J. Jorquera, Milko A. Viscardi, Sharon Fernandez, Camila Paz, Cristian de la Luz Mora, Maria Bol, Roland 2021-04-30T16:59:11Z http://repositoriodigital.uct.cl/handle/10925/3704 https://doi.org/10.3389/fbioe.2019.00028 en eng FRONTIERS MEDIA SA FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY,Vol.7,,2019 http://repositoriodigital.uct.cl/handle/10925/3704 doi:10.3389/fbioe.2019.00028 FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY Antarctica fungal community biodiversity index extreme environment cold desert Article 2021 ftunivctemuco https://doi.org/10.3389/fbioe.2019.00028 2021-05-01T23:50:58Z The presence of fungi in pristine Antarctic soils is of particular interest because of the diversity of this microbial group. However, the extreme conditions that coexist in Antarctica produce a strong selective pressure that could lead to the evolution of novel mechanisms for stress tolerance by indigenous microorganisms. For this reason, in recent years, research on cold-adapted microorganisms has increased, driven by their potential value for applications in biotechnology. Cold-adapted fungi, in particular, have become important sources for the discovery of novel bioactive secondary metabolites and enzymes. In this study, we studied the fungal community structure of 12 soil samples from Antarctic sites, including King George Island (including Collins Glacier), Deception Island and Robert Island. Culturable fungi were isolated and described according to their morphological and phenotypical characteristics, and the richness index was compared with soil chemical properties to describe the fungal community and associated environmental parameters. We isolated 54 fungal strains belonging to the following 19 genera: Penicillium, Pseudogymnoascus, Lambertella, Cadophora, Candida, Mortierella, Oxygenales, Geomyces, Vishniacozyma, Talaromyces, Rhizopus, Antarctomyces, Cosmospora, Tetracladium, Leptosphaeria, Lecanicillium, Thelebolus, Bjerkandera and an uncultured Zygomycete. The isolated fungi were comprised of 70% Ascomycota, 10% Zygomycota, 10% Basidiomycota, 5% Deuteromycota and 5% Mucoromycota, highlighting that most strains were associated with similar genera grown in cold environments. Among the culturable strains, 55% were psychrotrophic and 45% were psychrophilic, and most were Ascomycetes occurring in their teleomorph forms. Soils from the Collins Glacier showed less species richness and greater species dominance compared with the rest of the sites, whereas samples 4, 7, and 10 (from Fildes Bay, Coppermine Peninsula and Arctowski Station, respectively) showed greater species richness and less species dominance. Species richness was related to the C/N ratio, whereas species dominance was inversely related to C and N content. Thus, the structure of the fungal community was mainly related to soil chemical parameters more than sample location and altitude. Article in Journal/Newspaper Antarc* Antarctic Antarctica Collins Glacier Deception Island King George Island Robert Island Repositorio Académico de la Universidad Católica de Temuco (UCT) Antarctic Arctowski ENVELOPE(-58.467,-58.467,-62.167,-62.167) Arctowski Station ENVELOPE(-58.482,-58.482,-62.153,-62.153) Collins Glacier ENVELOPE(65.308,65.308,-73.829,-73.829) Coppermine Peninsula ENVELOPE(-59.713,-59.713,-62.374,-62.374) Deception Island ENVELOPE(-60.633,-60.633,-62.950,-62.950) Fildes ENVELOPE(-58.817,-58.817,-62.217,-62.217) King George Island Robert Island ENVELOPE(-59.500,-59.500,-62.417,-62.417) Frontiers in Bioengineering and Biotechnology 7 |
institution |
Open Polar |
collection |
Repositorio Académico de la Universidad Católica de Temuco (UCT) |
op_collection_id |
ftunivctemuco |
language |
English |
topic |
Antarctica fungal community biodiversity index extreme environment cold desert |
spellingShingle |
Antarctica fungal community biodiversity index extreme environment cold desert Duran, Paola Barra, Patricio J. Jorquera, Milko A. Viscardi, Sharon Fernandez, Camila Paz, Cristian de la Luz Mora, Maria Bol, Roland Occurrence of Soil Fungi in Antarctic Pristine Environments |
topic_facet |
Antarctica fungal community biodiversity index extreme environment cold desert |
description |
The presence of fungi in pristine Antarctic soils is of particular interest because of the diversity of this microbial group. However, the extreme conditions that coexist in Antarctica produce a strong selective pressure that could lead to the evolution of novel mechanisms for stress tolerance by indigenous microorganisms. For this reason, in recent years, research on cold-adapted microorganisms has increased, driven by their potential value for applications in biotechnology. Cold-adapted fungi, in particular, have become important sources for the discovery of novel bioactive secondary metabolites and enzymes. In this study, we studied the fungal community structure of 12 soil samples from Antarctic sites, including King George Island (including Collins Glacier), Deception Island and Robert Island. Culturable fungi were isolated and described according to their morphological and phenotypical characteristics, and the richness index was compared with soil chemical properties to describe the fungal community and associated environmental parameters. We isolated 54 fungal strains belonging to the following 19 genera: Penicillium, Pseudogymnoascus, Lambertella, Cadophora, Candida, Mortierella, Oxygenales, Geomyces, Vishniacozyma, Talaromyces, Rhizopus, Antarctomyces, Cosmospora, Tetracladium, Leptosphaeria, Lecanicillium, Thelebolus, Bjerkandera and an uncultured Zygomycete. The isolated fungi were comprised of 70% Ascomycota, 10% Zygomycota, 10% Basidiomycota, 5% Deuteromycota and 5% Mucoromycota, highlighting that most strains were associated with similar genera grown in cold environments. Among the culturable strains, 55% were psychrotrophic and 45% were psychrophilic, and most were Ascomycetes occurring in their teleomorph forms. Soils from the Collins Glacier showed less species richness and greater species dominance compared with the rest of the sites, whereas samples 4, 7, and 10 (from Fildes Bay, Coppermine Peninsula and Arctowski Station, respectively) showed greater species richness and less species dominance. Species richness was related to the C/N ratio, whereas species dominance was inversely related to C and N content. Thus, the structure of the fungal community was mainly related to soil chemical parameters more than sample location and altitude. |
format |
Article in Journal/Newspaper |
author |
Duran, Paola Barra, Patricio J. Jorquera, Milko A. Viscardi, Sharon Fernandez, Camila Paz, Cristian de la Luz Mora, Maria Bol, Roland |
author_facet |
Duran, Paola Barra, Patricio J. Jorquera, Milko A. Viscardi, Sharon Fernandez, Camila Paz, Cristian de la Luz Mora, Maria Bol, Roland |
author_sort |
Duran, Paola |
title |
Occurrence of Soil Fungi in Antarctic Pristine Environments |
title_short |
Occurrence of Soil Fungi in Antarctic Pristine Environments |
title_full |
Occurrence of Soil Fungi in Antarctic Pristine Environments |
title_fullStr |
Occurrence of Soil Fungi in Antarctic Pristine Environments |
title_full_unstemmed |
Occurrence of Soil Fungi in Antarctic Pristine Environments |
title_sort |
occurrence of soil fungi in antarctic pristine environments |
publisher |
FRONTIERS MEDIA SA |
publishDate |
2021 |
url |
http://repositoriodigital.uct.cl/handle/10925/3704 https://doi.org/10.3389/fbioe.2019.00028 |
long_lat |
ENVELOPE(-58.467,-58.467,-62.167,-62.167) ENVELOPE(-58.482,-58.482,-62.153,-62.153) ENVELOPE(65.308,65.308,-73.829,-73.829) ENVELOPE(-59.713,-59.713,-62.374,-62.374) ENVELOPE(-60.633,-60.633,-62.950,-62.950) ENVELOPE(-58.817,-58.817,-62.217,-62.217) ENVELOPE(-59.500,-59.500,-62.417,-62.417) |
geographic |
Antarctic Arctowski Arctowski Station Collins Glacier Coppermine Peninsula Deception Island Fildes King George Island Robert Island |
geographic_facet |
Antarctic Arctowski Arctowski Station Collins Glacier Coppermine Peninsula Deception Island Fildes King George Island Robert Island |
genre |
Antarc* Antarctic Antarctica Collins Glacier Deception Island King George Island Robert Island |
genre_facet |
Antarc* Antarctic Antarctica Collins Glacier Deception Island King George Island Robert Island |
op_source |
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY |
op_relation |
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY,Vol.7,,2019 http://repositoriodigital.uct.cl/handle/10925/3704 doi:10.3389/fbioe.2019.00028 |
op_doi |
https://doi.org/10.3389/fbioe.2019.00028 |
container_title |
Frontiers in Bioengineering and Biotechnology |
container_volume |
7 |
_version_ |
1766266385273454592 |