%0 Journal Article
%T The influence of hostİ\plant connectivity on fungal assemblages in the root microbiota of Brachypodium pinnatum
%A Cendrine Mony
%A Marine Biget
%A Nathan Vannier
%A Philippe V
%A Philom¨¨ne Brunelli¨¨re
%A Sophie Coudouel
%A enkoornhuyse
%J Ecology - Wiley Online Library
%D 2019
%R https://doi.org/10.1002/ecy.2976
%X Dispersal limitation may drive the structure of fungal microbiota of plant roots at small spatial scales. Fungal root microorganisms disperse through the plant rooting systems from hosts to hosts. Due to a pronounced hostİ\preference effect, the composition of endophytic root microbiota may follow plant distribution. A given plant community may hence include a matrix of hostİ\plant species that represent various habitat permeabilities to fungal dispersal in the floristic landscape. We experimentally tested the effect of hostİ\plant isolation on endophytic fungal assemblages (Ascomycota, Basidiomycota, Glomeromycotina) inhabiting Brachypodium pinnatum roots. We calculated hostİ\plant isolation using Euclidean distance (distanceİ\based dispersal limitation) and resistance distance (functionalİ\based dispersal limitation), based on host presences. All fungal groups were more influenced by the resistance distance between B. pinnatum than by the Euclidean distance. Fungal dispersal was hence strongly related to the spatial distribution of the host plants. The fungal groups displayed however different responses (in richness, abundance, and composition) to host isolation. Additionally, fungal assemblages were more strongly controlled by the degree of connectivity between host plants during the prior year than by current connectivity. This discrepancy may be due to changes in plant species coverage in a year and/or to the delay of dispersal response of fungi. This study it the first to demonstrate how smallİ\scale hostİ\plant distributions mediate connectivity in microorganisms. The consequences of plant distributions for the permeability of the floristic landscape to fungi dispersal appear to control fungal assemblages, but with possibly different mechanisms for the different fungal groups. Data are available on Figshare: https://doi.org/10.6084/m9.figshare.7893005.v1 Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article
%U https://esajournals.onlinelibrary.wiley.com/doi/full/10.1002/ecy.2976