Discrete taxa of saprotrophic fungi respire different ages of carbon from Antarctic soils
Different organic compounds have distinct residence times in soil and are degraded by specific taxa of saprotrophic fungi. It hence follows that specific fungal taxa should respire carbon of different ages from these compounds to the atmosphere. Here, we test whether this is the case by radiocarbon...
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ftpubmed:oai:pubmedcentral.nih.gov:5959846 2023-05-15T13:54:52+02:00 Discrete taxa of saprotrophic fungi respire different ages of carbon from Antarctic soils Newsham, Kevin K. Garnett, Mark H. Robinson, Clare H. Cox, Filipa 2018-05-18 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5959846/ http://www.ncbi.nlm.nih.gov/pubmed/29777126 https://doi.org/10.1038/s41598-018-25877-9 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5959846/ http://www.ncbi.nlm.nih.gov/pubmed/29777126 http://dx.doi.org/10.1038/s41598-018-25877-9 © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Article Text 2018 ftpubmed https://doi.org/10.1038/s41598-018-25877-9 2018-05-27T01:32:28Z Different organic compounds have distinct residence times in soil and are degraded by specific taxa of saprotrophic fungi. It hence follows that specific fungal taxa should respire carbon of different ages from these compounds to the atmosphere. Here, we test whether this is the case by radiocarbon (14C) dating CO2 evolved from two gamma radiation-sterilised maritime Antarctic soils inoculated with pure single cultures of four fungi. We show that a member of the Helotiales, which accounted for 41–56% of all fungal sequences in the two soils, respired soil carbon that was aged up to 1,200 years BP and which was 350–400 years older than that respired by the other three taxa. Analyses of the enzyme profile of the Helotialean fungus and the fluxes and δ13C values of CO2 that it evolved suggested that its release of old carbon from soil was associated with efficient cellulose decomposition. Our findings support suggestions that increases in the ages of carbon respired from warmed soils may be caused by changes to the abundances or activities of discrete taxa of microbes, and indicate that the loss of old carbon from soils is driven by specific fungal taxa. Text Antarc* Antarctic PubMed Central (PMC) Antarctic Scientific Reports 8 1 |
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Article Newsham, Kevin K. Garnett, Mark H. Robinson, Clare H. Cox, Filipa Discrete taxa of saprotrophic fungi respire different ages of carbon from Antarctic soils |
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Article |
description |
Different organic compounds have distinct residence times in soil and are degraded by specific taxa of saprotrophic fungi. It hence follows that specific fungal taxa should respire carbon of different ages from these compounds to the atmosphere. Here, we test whether this is the case by radiocarbon (14C) dating CO2 evolved from two gamma radiation-sterilised maritime Antarctic soils inoculated with pure single cultures of four fungi. We show that a member of the Helotiales, which accounted for 41–56% of all fungal sequences in the two soils, respired soil carbon that was aged up to 1,200 years BP and which was 350–400 years older than that respired by the other three taxa. Analyses of the enzyme profile of the Helotialean fungus and the fluxes and δ13C values of CO2 that it evolved suggested that its release of old carbon from soil was associated with efficient cellulose decomposition. Our findings support suggestions that increases in the ages of carbon respired from warmed soils may be caused by changes to the abundances or activities of discrete taxa of microbes, and indicate that the loss of old carbon from soils is driven by specific fungal taxa. |
format |
Text |
author |
Newsham, Kevin K. Garnett, Mark H. Robinson, Clare H. Cox, Filipa |
author_facet |
Newsham, Kevin K. Garnett, Mark H. Robinson, Clare H. Cox, Filipa |
author_sort |
Newsham, Kevin K. |
title |
Discrete taxa of saprotrophic fungi respire different ages of carbon from Antarctic soils |
title_short |
Discrete taxa of saprotrophic fungi respire different ages of carbon from Antarctic soils |
title_full |
Discrete taxa of saprotrophic fungi respire different ages of carbon from Antarctic soils |
title_fullStr |
Discrete taxa of saprotrophic fungi respire different ages of carbon from Antarctic soils |
title_full_unstemmed |
Discrete taxa of saprotrophic fungi respire different ages of carbon from Antarctic soils |
title_sort |
discrete taxa of saprotrophic fungi respire different ages of carbon from antarctic soils |
publisher |
Nature Publishing Group UK |
publishDate |
2018 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5959846/ http://www.ncbi.nlm.nih.gov/pubmed/29777126 https://doi.org/10.1038/s41598-018-25877-9 |
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Antarctic |
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Antarctic |
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Antarc* Antarctic |
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Antarc* Antarctic |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5959846/ http://www.ncbi.nlm.nih.gov/pubmed/29777126 http://dx.doi.org/10.1038/s41598-018-25877-9 |
op_rights |
© The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
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CC-BY |
op_doi |
https://doi.org/10.1038/s41598-018-25877-9 |
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Scientific Reports |
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