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A group of ectomycorrhizal fungi restricts organic matter accumulation in boreal forest

Lindahl, Björn and Kyaschenko, Julia and Varenius, Kerstin and Engelbrecht Clemmensen, Karina and Dahlberg, Anders and Karltun, Erik and Stendahl, Johan (2021). A group of ectomycorrhizal fungi restricts organic matter accumulation in boreal forest. Ecology Letters. 24 , 1341-1351
[Research article]

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Abstract

Boreal forest soils are important global carbon sinks, with significant storage in the organic topsoil. Decomposition of these stocks requires oxidative enzymes, uniquely produced by fungi. Across Swedish boreal forests, we found that local carbon storage in the organic topsoil was 33% lower in the presence of a group of closely related species of ectomycorrhizal fungi - Cortinarius acutus s.l.. This observation challenges the prevailing view that ectomycorrhizal fungi generally act to increase carbon storage in soils but supports the idea that certain ectomycorrhizal fungi can complement free-living decomposers, maintaining organic matter turnover, nutrient cycling and tree productivity under nutrient-poor conditions. The indication that a narrow group of fungi may exert a major influence on carbon cycling questions the prevailing dogma of functional redundancy among microbial decomposers. Cortinarius acutus s.l. responds negatively to stand-replacing disturbance, and associated population declines are likely to increase soil carbon sequestration while impeding long-term nutrient cycling.

Authors/Creators:Lindahl, Björn and Kyaschenko, Julia and Varenius, Kerstin and Engelbrecht Clemmensen, Karina and Dahlberg, Anders and Karltun, Erik and Stendahl, Johan
Title:A group of ectomycorrhizal fungi restricts organic matter accumulation in boreal forest
Series Name/Journal:Ecology Letters
Year of publishing :2021
Volume:24
Page range:1341-1351
Number of Pages:11
Publisher:WILEY
ISSN:1461-023X
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
Keywords:carbon sequestration, decomposition, functional guilds, functional redundancy, fungal communities, metabarcoding, mor layer, nitrogen, soil, statistical modelling
URN:NBN:urn:nbn:se:slu:epsilon-p-111880
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-111880
Additional ID:
Type of IDID
DOI10.1111/ele.13746
Web of Science (WoS)000645998200001
ID Code:24783
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
S - Faculty of Forest Sciences
Department:(NL, NJ) > Dept. of Soil and Environment
(S) > Dept. of Soil and Environment

(NL, NJ) > Dept. of Forest Mycology and Plant Pathology
(S) > Dept. of Forest Mycology and Plant Pathology
Deposited By: SLUpub Connector
Deposited On:02 Jul 2021 09:25
Metadata Last Modified:02 Jul 2021 09:31

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