“Ectomycorrhizal exploration type” could be a functional trait explaining the spatial distribution of tree symbiotic fungi as a function of forest humus forms
Fadwa Khalfallah
(1)
,
Lucie Bon
(2)
,
Mohamed El Mazlouzi
(2)
,
Mark R. Bakker
(2)
,
Nicolas Fanin
(2)
,
Richard Bellanger
(3)
,
Bernier Frédéric
(4)
,
Adinda de Schrijver
(5)
,
Catherine Ducatillon
(3)
,
Fotelli M.N.
(6)
,
Gâteblé Gildas
(3)
,
Gundale M.J.
(7)
,
Larsson M.
(7)
,
Arnaud Legout
(8)
,
Mason W.L.
(9)
,
Nordin A.
(7)
,
Smolander A.
(10)
,
Spyroglou G.
(6)
,
Vanguelova E.I.
(11)
,
Verheyen K.
(5)
,
Vesterdal L.
(12)
,
Bernd Zeller
(8)
,
Laurent Augusto
(2)
,
Delphine Derrien
(8)
,
Marc Buée
(1)
1
IAM -
Interactions Arbres-Microorganismes
2 UMR ISPA - Interactions Sol Plante Atmosphère
3 UEVT - Villa Thuret
4 UEFP - Unité expérimentale Forêt Pierroton
5 UGENT - Universiteit Gent = Ghent University
6 ELGO -DIMITRA - Ellinikos Georgikos OrGanismos-DIMITRA
7 SLU - Swedish University of Agricultural Sciences = Sveriges lantbruksuniversitet
8 BEF - Unité de recherche Biogéochimie des Ecosystèmes Forestiers
9 Northern Research Station
10 LUKE - Natural Resources Institute Finland
11 Alice Holt Lodge
12 ITU - IT University of Copenhagen
2 UMR ISPA - Interactions Sol Plante Atmosphère
3 UEVT - Villa Thuret
4 UEFP - Unité expérimentale Forêt Pierroton
5 UGENT - Universiteit Gent = Ghent University
6 ELGO -DIMITRA - Ellinikos Georgikos OrGanismos-DIMITRA
7 SLU - Swedish University of Agricultural Sciences = Sveriges lantbruksuniversitet
8 BEF - Unité de recherche Biogéochimie des Ecosystèmes Forestiers
9 Northern Research Station
10 LUKE - Natural Resources Institute Finland
11 Alice Holt Lodge
12 ITU - IT University of Copenhagen
Mark R. Bakker
- Fonction : Auteur
- PersonId : 1206801
- IdHAL : mark-r-bakker
- ORCID : 0000-0002-3251-3586
- IdRef : 133872483
Nicolas Fanin
- Fonction : Auteur
- PersonId : 183920
- IdHAL : nicolasfanin
- ORCID : 0000-0003-4195-855X
- IdRef : 16664918X
Bernier Frédéric
- Fonction : Auteur
- PersonId : 1203699
- IdHAL : frederic-bernier
- ORCID : 0009-0008-3274-0907
Gâteblé Gildas
- Fonction : Auteur
- PersonId : 1142563
- IdHAL : gildas-gateble
- ORCID : 0000-0003-2831-6384
- IdRef : 191599352
Arnaud Legout
- Fonction : Auteur
- PersonId : 745338
- IdHAL : arnaud-legout
- ORCID : 0000-0001-8499-0280
- IdRef : 060774711
Bernd Zeller
- Fonction : Auteur
- PersonId : 1386789
Laurent Augusto
- Fonction : Auteur
- PersonId : 736269
- IdHAL : laurent-augusto
- ORCID : 0000-0002-7049-6000
- IdRef : 145172015
Delphine Derrien
- Fonction : Auteur
- PersonId : 745268
- IdHAL : delphine-derrien
- ORCID : 0000-0002-6482-2316
- IdRef : 13734919X
Marc Buée
- Fonction : Auteur
- PersonId : 748217
- IdHAL : marc-buee
- ORCID : 0000-0001-8614-3886
- IdRef : 063239108
Résumé
In European forests, most tree species form symbioses with ectomycorrhizal (EM) and arbuscular mycorrhizal (AM) fungi. The EM fungi are classified into different morphological types based on the development and structure of their extraradical mycelium. These structures could be root extensions that help trees to acquire nutrients. However, the relationship between these morphological traits and functions involved in soil nutrient foraging is still under debate.We described the composition of mycorrhizal fungal communities under 23 tree species in a wide range of climates and humus forms in Europe and investigated the exploratory types of EM fungi. We assessed the response of this tree extended phenotype to humus forms, as an indicator of the functioning and quality of forest soils. We found a significant relationship between the relative proportion of the two broad categories of EM exploration types (short- or long-distance) and the humus form, showing a greater proportion of long-distance types in the least dynamic soils. As past land-use and host tree species are significant factors structuring fungal communities, we showed this relationship was modulated by host trait (gymnosperms versus angiosperms), soil depth and past land use (farmland or forest).We propose that this potential functional trait of EM fungi be used in future studies to improve predictive models of forest soil functioning and tree adaptation to environmental nutrient conditions.