Beyond ectomycorrhizal bipartite networks: projected networks demonstrate contrasted patterns between early- and late-successional plants in CorsicaReportar como inadecuado




Beyond ectomycorrhizal bipartite networks: projected networks demonstrate contrasted patterns between early- and late-successional plants in Corsica - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

* Corresponding author 1 CEFE - Centre d’Ecologie Fonctionnelle et Evolutive 2 UMR AMAP - Botanique et Bioinformatique de l-Architecture des Plantes 3 French Institute of Pondicherry 4 LPTMC - Laboratoire de Physique Théorique de la Matière Condensée 5 IGMM - Institut de Génétique Moléculaire de Montpellier 6 OSEB - Origine, structure et évolution de la biodiversité 7 Département de botanique, Faculté des sciences pharmaceutiques et biologiques, Université de Lille

Abstract : The ectomycorrhizal ECM symbiosis connects mutualistic plants and fungal species into bipartite networks. While links between one focal ECM plant and its fungal symbionts have been widely documented, systemic views of ECM networks are lacking, in particular, concerning the ability of fungal species to mediate indirect ecological interactions between ECM plant species projected-ECM networks. We assembled a large dataset of plant–fungi associations at the species level and at the scale of Corsica using molecular data and unambiguously host-assigned records to: i examine the correlation between the number of fungal symbionts of a plant species and the average specialization of these fungal species, ii explore the structure of the plant–plant projected network and iii compare plant association patterns in regard to their position along the ecological succession. Our analysis reveals no trade-off between specialization of plants and specialization of their partners and a saturation of the plant projected network. Moreover, there is a significantly lower-than-expected sharing of partners between early- and late-successional plant species, with fewer fungal partners for early-successional ones and similar average specialization of symbionts of early- and late-successional plants. Our work paves the way for ecological readings of Mediterranean landscapes that include the astonishing diversity of below-ground interactions.





Autor: Adrien Taudiere - Francois Munoz - Annick Lesne - Anne-Christine Monnet - Jean-Michel Bellanger - Marc-Andre Selosse - Pierre-Art

Fuente: https://hal.archives-ouvertes.fr/



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