Ericoid shrubs shape fungal communities and suppress organic matter decomposition in boreal forests

© 2022 The Authors. New Phytologist © 2022 New Phytologist Foundation.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 236(2022), 2 vom: 18. Okt., Seite 684-697
1. Verfasser: Fanin, Nicolas (VerfasserIn)
Weitere Verfasser: Clemmensen, Karina E, Lindahl, Björn D, Farrell, Mark, Nilsson, Marie-Charlotte, Gundale, Michael J, Kardol, Paul, Wardle, David A
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2022
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Research Support, Non-U.S. Gov't ectomycorrhizal fungi ericoid mycorrhizal fungi forest understorey fungal interactions nutrient cycling plant-soil (belowground) interactions saprotrophs soil organic matter mehr... Soil Carbon 7440-44-0 Nitrogen N762921K75
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520 |a Mycorrhizal fungi associated with boreal trees and ericaceous shrubs are central actors in organic matter (OM) accumulation through their belowground carbon allocation, their potential capacity to mine organic matter for nitrogen (N) and their ability to suppress saprotrophs. Yet, interactions between co-occurring ectomycorrhizal fungi (EMF), ericoid mycorrhizal fungi (ERI), and saprotrophs are poorly understood. We used a long-term (19 yr) plant functional group manipulation experiment with removals of tree roots, ericaceous shrubs and mosses and analysed the responses of different fungal guilds (assessed by metabarcoding) and their interactions in relation to OM quality (assessed by mid-infrared spectroscopy and nuclear magnetic resonance) and decomposition (litter mesh-bags) across a 5000-yr post-fire boreal forest chronosequence. We found that the removal of ericaceous shrubs and associated ERI changed the composition of EMF communities, with larger effects occurring at earlier stages of the chronosequence. Removal of shrubs was associated with enhanced N availability, litter decomposition and enrichment of the recalcitrant OM fraction. We conclude that increasing abundance of slow-growing ericaceous shrubs and the associated fungi contributes to increasing nutrient limitation, impaired decomposition and progressive OM accumulation in boreal forests, particularly towards later successional stages. These results are indicative of the contrasting roles of EMF and ERI in regulating belowground OM storage 
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650 4 |a Research Support, Non-U.S. Gov't 
650 4 |a ectomycorrhizal fungi 
650 4 |a ericoid mycorrhizal fungi 
650 4 |a forest understorey 
650 4 |a fungal interactions 
650 4 |a nutrient cycling 
650 4 |a plant-soil (belowground) interactions 
650 4 |a saprotrophs 
650 4 |a soil organic matter 
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700 1 |a Clemmensen, Karina E  |e verfasserin  |4 aut 
700 1 |a Lindahl, Björn D  |e verfasserin  |4 aut 
700 1 |a Farrell, Mark  |e verfasserin  |4 aut 
700 1 |a Nilsson, Marie-Charlotte  |e verfasserin  |4 aut 
700 1 |a Gundale, Michael J  |e verfasserin  |4 aut 
700 1 |a Kardol, Paul  |e verfasserin  |4 aut 
700 1 |a Wardle, David A  |e verfasserin  |4 aut 
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773 1 8 |g volume:236  |g year:2022  |g number:2  |g day:18  |g month:10  |g pages:684-697 
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