Experimental warming increases fungal alpha diversity in an oligotrophic maritime Antarctic soil
The climate of maritime Antarctica has altered since the 1950s. However, the effects of increased temperature, precipitation and organic carbon and nitrogen availability on the fungal communities inhabiting the barren and oligotrophic fellfield soils that are widespread across the region are poorly...
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ftpubmed:oai:pubmedcentral.nih.gov:9684652 2023-05-15T13:33:20+02:00 Experimental warming increases fungal alpha diversity in an oligotrophic maritime Antarctic soil Newsham, Kevin K. Misiak, Marta Goodall-Copestake, William P. Dahl, Malin Stapnes Boddy, Lynne Hopkins, David W. Davey, Marie L. 2022-11-10 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9684652/ https://doi.org/10.3389/fmicb.2022.1050372 en eng Frontiers Media S.A. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9684652/ http://dx.doi.org/10.3389/fmicb.2022.1050372 Copyright © 2022 Newsham, Misiak, Goodall-Copestake, Dahl, Boddy, Hopkins and Davey. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. CC-BY Front Microbiol Microbiology Text 2022 ftpubmed https://doi.org/10.3389/fmicb.2022.1050372 2022-11-27T01:58:45Z The climate of maritime Antarctica has altered since the 1950s. However, the effects of increased temperature, precipitation and organic carbon and nitrogen availability on the fungal communities inhabiting the barren and oligotrophic fellfield soils that are widespread across the region are poorly understood. Here, we test how warming with open top chambers (OTCs), irrigation and the organic substrates glucose, glycine and tryptone soy broth (TSB) influence a fungal community inhabiting an oligotrophic maritime Antarctic fellfield soil. In contrast with studies in vegetated soils at lower latitudes, OTCs increased fungal community alpha diversity (Simpson’s index and evenness) by 102–142% in unamended soil after 5 years. Conversely, OTCs had few effects on diversity in substrate-amended soils, with their only main effects, in glycine-amended soils, being attributable to an abundance of Pseudogymnoascus. The substrates reduced alpha and beta diversity metrics by 18–63%, altered community composition and elevated soil fungal DNA concentrations by 1–2 orders of magnitude after 5 years. In glycine-amended soil, OTCs decreased DNA concentrations by 57% and increased the relative abundance of the yeast Vishniacozyma by 45-fold. The relative abundance of the yeast Gelidatrema declined by 78% in chambered soil and increased by 1.9-fold in irrigated soil. Fungal DNA concentrations were also halved by irrigation in TSB-amended soils. In support of regional- and continental-scale studies across climatic gradients, the observations indicate that soil fungal alpha diversity in maritime Antarctica will increase as the region warms, but suggest that the accumulation of organic carbon and nitrogen compounds in fellfield soils arising from expanding plant populations are likely, in time, to attenuate the positive effects of warming on diversity. Text Antarc* Antarctic Antarctica PubMed Central (PMC) Antarctic Frontiers in Microbiology 13 |
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Microbiology |
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Microbiology Newsham, Kevin K. Misiak, Marta Goodall-Copestake, William P. Dahl, Malin Stapnes Boddy, Lynne Hopkins, David W. Davey, Marie L. Experimental warming increases fungal alpha diversity in an oligotrophic maritime Antarctic soil |
topic_facet |
Microbiology |
description |
The climate of maritime Antarctica has altered since the 1950s. However, the effects of increased temperature, precipitation and organic carbon and nitrogen availability on the fungal communities inhabiting the barren and oligotrophic fellfield soils that are widespread across the region are poorly understood. Here, we test how warming with open top chambers (OTCs), irrigation and the organic substrates glucose, glycine and tryptone soy broth (TSB) influence a fungal community inhabiting an oligotrophic maritime Antarctic fellfield soil. In contrast with studies in vegetated soils at lower latitudes, OTCs increased fungal community alpha diversity (Simpson’s index and evenness) by 102–142% in unamended soil after 5 years. Conversely, OTCs had few effects on diversity in substrate-amended soils, with their only main effects, in glycine-amended soils, being attributable to an abundance of Pseudogymnoascus. The substrates reduced alpha and beta diversity metrics by 18–63%, altered community composition and elevated soil fungal DNA concentrations by 1–2 orders of magnitude after 5 years. In glycine-amended soil, OTCs decreased DNA concentrations by 57% and increased the relative abundance of the yeast Vishniacozyma by 45-fold. The relative abundance of the yeast Gelidatrema declined by 78% in chambered soil and increased by 1.9-fold in irrigated soil. Fungal DNA concentrations were also halved by irrigation in TSB-amended soils. In support of regional- and continental-scale studies across climatic gradients, the observations indicate that soil fungal alpha diversity in maritime Antarctica will increase as the region warms, but suggest that the accumulation of organic carbon and nitrogen compounds in fellfield soils arising from expanding plant populations are likely, in time, to attenuate the positive effects of warming on diversity. |
format |
Text |
author |
Newsham, Kevin K. Misiak, Marta Goodall-Copestake, William P. Dahl, Malin Stapnes Boddy, Lynne Hopkins, David W. Davey, Marie L. |
author_facet |
Newsham, Kevin K. Misiak, Marta Goodall-Copestake, William P. Dahl, Malin Stapnes Boddy, Lynne Hopkins, David W. Davey, Marie L. |
author_sort |
Newsham, Kevin K. |
title |
Experimental warming increases fungal alpha diversity in an oligotrophic maritime Antarctic soil |
title_short |
Experimental warming increases fungal alpha diversity in an oligotrophic maritime Antarctic soil |
title_full |
Experimental warming increases fungal alpha diversity in an oligotrophic maritime Antarctic soil |
title_fullStr |
Experimental warming increases fungal alpha diversity in an oligotrophic maritime Antarctic soil |
title_full_unstemmed |
Experimental warming increases fungal alpha diversity in an oligotrophic maritime Antarctic soil |
title_sort |
experimental warming increases fungal alpha diversity in an oligotrophic maritime antarctic soil |
publisher |
Frontiers Media S.A. |
publishDate |
2022 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9684652/ https://doi.org/10.3389/fmicb.2022.1050372 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
Front Microbiol |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9684652/ http://dx.doi.org/10.3389/fmicb.2022.1050372 |
op_rights |
Copyright © 2022 Newsham, Misiak, Goodall-Copestake, Dahl, Boddy, Hopkins and Davey. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fmicb.2022.1050372 |
container_title |
Frontiers in Microbiology |
container_volume |
13 |
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1766041377044430848 |