The Unusual Dominance of the Yeast Genus Glaciozyma in the Deeper Layer in an Antarctic Permafrost Core (Adélie Cove, Northern Victoria Land) Is Driven by Elemental Composition
Rock glaciers are relatively common in Antarctic permafrost areas and could be considered postglacial cryogenic landforms. Although the extensive presence of rock glaciers, their chemical–physical and biotic composition remain scarce. Chemical–physical parameters and fungal community (by sequencing...
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ftmdpi:oai:mdpi.com:/2309-608X/9/4/435/ 2023-08-20T04:01:04+02:00 The Unusual Dominance of the Yeast Genus Glaciozyma in the Deeper Layer in an Antarctic Permafrost Core (Adélie Cove, Northern Victoria Land) Is Driven by Elemental Composition Ciro Sannino Luigimaria Borruso Ambra Mezzasoma Benedetta Turchetti Stefano Ponti Pietro Buzzini Tanja Mimmo Mauro Guglielmin agris 2023-04-03 application/pdf https://doi.org/10.3390/jof9040435 EN eng Multidisciplinary Digital Publishing Institute Environmental and Ecological Interactions of Fungi https://dx.doi.org/10.3390/jof9040435 https://creativecommons.org/licenses/by/4.0/ Journal of Fungi; Volume 9; Issue 4; Pages: 435 Antarctica abiotic parameters chemical–physical parameters fungal community metabarcoding rock glaciers ice core Text 2023 ftmdpi https://doi.org/10.3390/jof9040435 2023-08-01T09:32:51Z Rock glaciers are relatively common in Antarctic permafrost areas and could be considered postglacial cryogenic landforms. Although the extensive presence of rock glaciers, their chemical–physical and biotic composition remain scarce. Chemical–physical parameters and fungal community (by sequencing the ITS2 rDNA, Illumina MiSeq) parameters of a permafrost core were studied. The permafrost core, reaching a depth of 6.10 m, was divided into five units based on ice content. The five units (U1–U5) of the permafrost core exhibited several significant (p < 0.05) differences in terms of chemical and physical characteristics, and significant (p < 0.05) higher values of Ca, K, Li, Mg, Mn, S, and Sr were found in U5. Yeasts dominated on filamentous fungi in all the units of the permafrost core; additionally, Ascomycota was the prevalent phylum among filamentous forms, while Basidiomycota was the dominant phylum among yeasts. Surprisingly, in U5 the amplicon sequence variants (ASVs) assigned to the yeast genus Glaciozyma represented about two-thirds of the total reads. This result may be considered extremely rare in Antarctic yeast diversity, especially in permafrost habitats. Based on of the chemical–physical composition of the units, the dominance of Glaciozyma in the deepest unit was correlated with the elemental composition of the core. Text Antarc* Antarctic Antarctica Ice ice core permafrost Victoria Land MDPI Open Access Publishing Adélie Cove ENVELOPE(164.000,164.000,-74.767,-74.767) Antarctic Victoria Land Journal of Fungi 9 4 435 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
Antarctica abiotic parameters chemical–physical parameters fungal community metabarcoding rock glaciers ice core |
spellingShingle |
Antarctica abiotic parameters chemical–physical parameters fungal community metabarcoding rock glaciers ice core Ciro Sannino Luigimaria Borruso Ambra Mezzasoma Benedetta Turchetti Stefano Ponti Pietro Buzzini Tanja Mimmo Mauro Guglielmin The Unusual Dominance of the Yeast Genus Glaciozyma in the Deeper Layer in an Antarctic Permafrost Core (Adélie Cove, Northern Victoria Land) Is Driven by Elemental Composition |
topic_facet |
Antarctica abiotic parameters chemical–physical parameters fungal community metabarcoding rock glaciers ice core |
description |
Rock glaciers are relatively common in Antarctic permafrost areas and could be considered postglacial cryogenic landforms. Although the extensive presence of rock glaciers, their chemical–physical and biotic composition remain scarce. Chemical–physical parameters and fungal community (by sequencing the ITS2 rDNA, Illumina MiSeq) parameters of a permafrost core were studied. The permafrost core, reaching a depth of 6.10 m, was divided into five units based on ice content. The five units (U1–U5) of the permafrost core exhibited several significant (p < 0.05) differences in terms of chemical and physical characteristics, and significant (p < 0.05) higher values of Ca, K, Li, Mg, Mn, S, and Sr were found in U5. Yeasts dominated on filamentous fungi in all the units of the permafrost core; additionally, Ascomycota was the prevalent phylum among filamentous forms, while Basidiomycota was the dominant phylum among yeasts. Surprisingly, in U5 the amplicon sequence variants (ASVs) assigned to the yeast genus Glaciozyma represented about two-thirds of the total reads. This result may be considered extremely rare in Antarctic yeast diversity, especially in permafrost habitats. Based on of the chemical–physical composition of the units, the dominance of Glaciozyma in the deepest unit was correlated with the elemental composition of the core. |
format |
Text |
author |
Ciro Sannino Luigimaria Borruso Ambra Mezzasoma Benedetta Turchetti Stefano Ponti Pietro Buzzini Tanja Mimmo Mauro Guglielmin |
author_facet |
Ciro Sannino Luigimaria Borruso Ambra Mezzasoma Benedetta Turchetti Stefano Ponti Pietro Buzzini Tanja Mimmo Mauro Guglielmin |
author_sort |
Ciro Sannino |
title |
The Unusual Dominance of the Yeast Genus Glaciozyma in the Deeper Layer in an Antarctic Permafrost Core (Adélie Cove, Northern Victoria Land) Is Driven by Elemental Composition |
title_short |
The Unusual Dominance of the Yeast Genus Glaciozyma in the Deeper Layer in an Antarctic Permafrost Core (Adélie Cove, Northern Victoria Land) Is Driven by Elemental Composition |
title_full |
The Unusual Dominance of the Yeast Genus Glaciozyma in the Deeper Layer in an Antarctic Permafrost Core (Adélie Cove, Northern Victoria Land) Is Driven by Elemental Composition |
title_fullStr |
The Unusual Dominance of the Yeast Genus Glaciozyma in the Deeper Layer in an Antarctic Permafrost Core (Adélie Cove, Northern Victoria Land) Is Driven by Elemental Composition |
title_full_unstemmed |
The Unusual Dominance of the Yeast Genus Glaciozyma in the Deeper Layer in an Antarctic Permafrost Core (Adélie Cove, Northern Victoria Land) Is Driven by Elemental Composition |
title_sort |
unusual dominance of the yeast genus glaciozyma in the deeper layer in an antarctic permafrost core (adélie cove, northern victoria land) is driven by elemental composition |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2023 |
url |
https://doi.org/10.3390/jof9040435 |
op_coverage |
agris |
long_lat |
ENVELOPE(164.000,164.000,-74.767,-74.767) |
geographic |
Adélie Cove Antarctic Victoria Land |
geographic_facet |
Adélie Cove Antarctic Victoria Land |
genre |
Antarc* Antarctic Antarctica Ice ice core permafrost Victoria Land |
genre_facet |
Antarc* Antarctic Antarctica Ice ice core permafrost Victoria Land |
op_source |
Journal of Fungi; Volume 9; Issue 4; Pages: 435 |
op_relation |
Environmental and Ecological Interactions of Fungi https://dx.doi.org/10.3390/jof9040435 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/jof9040435 |
container_title |
Journal of Fungi |
container_volume |
9 |
container_issue |
4 |
container_start_page |
435 |
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1774722448083648512 |