The influence of soil warming on organic carbon sequestration of arbuscular mycorrhizal fungi in a sub-arctic grassland
A substantial portion of grassland photosynthates is allocated belowground to arbuscular mycorrhizal fungi (AMF), but controversy remains about whether this carbon (C) contributes to soil organic carbon (SOC) under warming. The goal of this study was to investigate how AMF biomass and C sequestered...
Published in: | Soil Biology and Biochemistry |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Elsevier
2020
|
Subjects: | |
Online Access: | https://lup.lub.lu.se/record/c86f962e-8dfa-41d3-9555-aed70782e407 https://doi.org/10.1016/j.soilbio.2020.107826 |
id |
ftulundlup:oai:lup.lub.lu.se:c86f962e-8dfa-41d3-9555-aed70782e407 |
---|---|
record_format |
openpolar |
spelling |
ftulundlup:oai:lup.lub.lu.se:c86f962e-8dfa-41d3-9555-aed70782e407 2023-05-15T15:10:40+02:00 The influence of soil warming on organic carbon sequestration of arbuscular mycorrhizal fungi in a sub-arctic grassland Zhang, Jing Ekblad, Alf Sigurdsson, Bjarni D. Wallander, Håkan 2020 https://lup.lub.lu.se/record/c86f962e-8dfa-41d3-9555-aed70782e407 https://doi.org/10.1016/j.soilbio.2020.107826 eng eng Elsevier https://lup.lub.lu.se/record/c86f962e-8dfa-41d3-9555-aed70782e407 http://dx.doi.org/10.1016/j.soilbio.2020.107826 scopus:85085127501 Soil Biology and Biochemistry; 147, no 107826 (2020) ISSN: 0038-0717 Soil Science Arbuscular mycorrhizal fungi Fungal biomass Fungal necromass Geothermal warming Glomalin-related soil protein Ingrowth mesh bags contributiontojournal/article info:eu-repo/semantics/article text 2020 ftulundlup https://doi.org/10.1016/j.soilbio.2020.107826 2023-02-01T23:39:50Z A substantial portion of grassland photosynthates is allocated belowground to arbuscular mycorrhizal fungi (AMF), but controversy remains about whether this carbon (C) contributes to soil organic carbon (SOC) under warming. The goal of this study was to investigate how AMF biomass and C sequestered by AMF (CNew) are influenced by soil warming. We estimated the AMF biomass and CNew, assumed to be mostly AMF necromass, in mycelial ingrowth bags buried for 1, 2, or 3 years in soil under warming (~+0.5–16.4 °C). The AMF biomass had a positive, curvilinear response to warming gradients after one year of burial. About 107 g C m−2 of CNew accumulated over the three years and ~12% of this C was from glomalin-related soil protein. Modelling suggested the production rate of AMF biomass was 153 g C m−2 yr−1 with a rapid (36–75 days) turnover while AMF necromass turnover was much slower (1.4 ± 0.2 yr−1). Warming duration (7–9 years vs. > 50 years) did not have significant influence on AMF biomass or CNew (P > 0.05). Our results suggest that AMF are more tolerant to increases in temperature than other microbes or fine roots. The dramatic loss of soil C and stable soil aggregates under warming found earlier at this site were not attributed to a decrease in AMF biomass or CNew. Despite a low AMF standing biomass, its contribution to SOC may be substantial. Article in Journal/Newspaper Arctic Lund University Publications (LUP) Arctic Soil Biology and Biochemistry 147 107826 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Soil Science Arbuscular mycorrhizal fungi Fungal biomass Fungal necromass Geothermal warming Glomalin-related soil protein Ingrowth mesh bags |
spellingShingle |
Soil Science Arbuscular mycorrhizal fungi Fungal biomass Fungal necromass Geothermal warming Glomalin-related soil protein Ingrowth mesh bags Zhang, Jing Ekblad, Alf Sigurdsson, Bjarni D. Wallander, Håkan The influence of soil warming on organic carbon sequestration of arbuscular mycorrhizal fungi in a sub-arctic grassland |
topic_facet |
Soil Science Arbuscular mycorrhizal fungi Fungal biomass Fungal necromass Geothermal warming Glomalin-related soil protein Ingrowth mesh bags |
description |
A substantial portion of grassland photosynthates is allocated belowground to arbuscular mycorrhizal fungi (AMF), but controversy remains about whether this carbon (C) contributes to soil organic carbon (SOC) under warming. The goal of this study was to investigate how AMF biomass and C sequestered by AMF (CNew) are influenced by soil warming. We estimated the AMF biomass and CNew, assumed to be mostly AMF necromass, in mycelial ingrowth bags buried for 1, 2, or 3 years in soil under warming (~+0.5–16.4 °C). The AMF biomass had a positive, curvilinear response to warming gradients after one year of burial. About 107 g C m−2 of CNew accumulated over the three years and ~12% of this C was from glomalin-related soil protein. Modelling suggested the production rate of AMF biomass was 153 g C m−2 yr−1 with a rapid (36–75 days) turnover while AMF necromass turnover was much slower (1.4 ± 0.2 yr−1). Warming duration (7–9 years vs. > 50 years) did not have significant influence on AMF biomass or CNew (P > 0.05). Our results suggest that AMF are more tolerant to increases in temperature than other microbes or fine roots. The dramatic loss of soil C and stable soil aggregates under warming found earlier at this site were not attributed to a decrease in AMF biomass or CNew. Despite a low AMF standing biomass, its contribution to SOC may be substantial. |
format |
Article in Journal/Newspaper |
author |
Zhang, Jing Ekblad, Alf Sigurdsson, Bjarni D. Wallander, Håkan |
author_facet |
Zhang, Jing Ekblad, Alf Sigurdsson, Bjarni D. Wallander, Håkan |
author_sort |
Zhang, Jing |
title |
The influence of soil warming on organic carbon sequestration of arbuscular mycorrhizal fungi in a sub-arctic grassland |
title_short |
The influence of soil warming on organic carbon sequestration of arbuscular mycorrhizal fungi in a sub-arctic grassland |
title_full |
The influence of soil warming on organic carbon sequestration of arbuscular mycorrhizal fungi in a sub-arctic grassland |
title_fullStr |
The influence of soil warming on organic carbon sequestration of arbuscular mycorrhizal fungi in a sub-arctic grassland |
title_full_unstemmed |
The influence of soil warming on organic carbon sequestration of arbuscular mycorrhizal fungi in a sub-arctic grassland |
title_sort |
influence of soil warming on organic carbon sequestration of arbuscular mycorrhizal fungi in a sub-arctic grassland |
publisher |
Elsevier |
publishDate |
2020 |
url |
https://lup.lub.lu.se/record/c86f962e-8dfa-41d3-9555-aed70782e407 https://doi.org/10.1016/j.soilbio.2020.107826 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Soil Biology and Biochemistry; 147, no 107826 (2020) ISSN: 0038-0717 |
op_relation |
https://lup.lub.lu.se/record/c86f962e-8dfa-41d3-9555-aed70782e407 http://dx.doi.org/10.1016/j.soilbio.2020.107826 scopus:85085127501 |
op_doi |
https://doi.org/10.1016/j.soilbio.2020.107826 |
container_title |
Soil Biology and Biochemistry |
container_volume |
147 |
container_start_page |
107826 |
_version_ |
1766341643304173568 |