Into the functional ecology of ectomycorrhizal communities: environmental filtering of enzymatic activities

Pierre-Emmanuel Courty; Munoz François; Selosse Marc-André; Duchemin Myriam; Criquet Stéven; Ziarelli Fabio; Buée Marc; Plassard Claude; Taudière Adrien; Garbaye Jean; Richard Franck

doi:10.1111/1365-2745.12633

Journal articles

Into the functional ecology of ectomycorrhizal communities: environmental filtering of enzymatic activities

Pierre-Emmanuel Courty ^{1, 2, *} Munoz François ^{3, 4} Selosse Marc-André ⁵ Duchemin Myriam ⁶ Criquet Stéven ⁷ Ziarelli Fabio ⁸ Buée Marc ⁹ Plassard Claude ¹⁰ Taudière Adrien ⁶ Garbaye Jean ⁹ Richard Franck ⁶

* Corresponding author

1 University of Fribourg

2 Zurich-Basel Plant Science Center, Department of Environmental Sciences, Botany, University of Basel

3 IFP - Institut Français de Pondichéry

4 UMR AMAP - Botanique et Modélisation de l'Architecture des Plantes et des Végétations

5 ISYEB - Institut de Systématique, Evolution, Biodiversité

6 CEFE - Centre d’Ecologie Fonctionnelle et Evolutive

7 IMBE - Institut méditerranéen de biodiversité et d'écologie marine et continentale

8 AMU SCI - Aix-Marseille Université - Faculté des Sciences

9 IAM - Interactions Arbres-Microorganismes

10 UMR Eco&Sols - Ecologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes

Abstract : Characterizing the ecological processes driving the assembly and functional composition of ectomycorrhizal (ECM) fungal communities is an area of active research. Here, we applied a trait-based framework to address whether and how environmental filtering and niche differentiation influence the diversity of ECM fungal enzymatic activities in two oak-dominated forest ecosystems. We hypothesized that fungal enzymatic activities and ECM community assembly are influenced by the availability of targeted resources in the surrounding soil. We pinpointed a major influence of environmental filtering on ECM fungal taxonomic and functional composition. Contrasted taxonomic composition among forest ecosystems was linked to broad interspecific trait variation and entailed contrasted functional responses at community level. However, intraspecific trait variation contributed to community response within ecosystems. We characterized a strong relationship between enzymatic activities and targeted resource availability in surrounding soil, suggesting a functional role of the enzymes for the acquisition of these resources. Conversely, we did not find a significant influence of niche differentiation in ECM community assembly. Synthesis. Heterogeneous distribution of soil resources drives a community-level functional response and determines the functional and taxonomic mosaic of ECM communities in forest ecosystems.

Keywords : Ectomycorrhizal fungal communities Enymatic activities Ecology

Document type :

Journal articles

Domain :

Life Sciences [q-bio] / Ecology, environment

Life Sciences [q-bio] / Ecology, environment / Ecosystems

Life Sciences [q-bio] / Microbiology and Parasitology / Mycology

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https://hal.archives-ouvertes.fr/hal-01359227
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Submitted on : Thursday, May 28, 2020 - 9:52:24 AM
Last modification on : Wednesday, March 23, 2022 - 12:08:29 PM

Into the functional ecology of ectomycorrhizal communities: environmental filtering of enzymatic activities

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Into the functional ecology of ectomycorrhizal communities: environmental filtering of enzymatic activities

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