Full text

Turn on search term navigation

© 2018. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.

Abstract

Foundation plants shape the composition of local biotic communities and abiotic environments, but the impact of a plant's intraspecific variations on these processes is poorly understood. We examined these links in the alpine cushion moss campion (Silene acaulis) on two neighboring mountain ranges in the French Alps. Genotyping of cushion plants revealed two genetic clusters matching known subspecies. The exscapa subspecies was found on both limestone and granite, while the longiscapa one was only found on limestone. Even on similar limestone bedrock, cushion soils from the two S. acaulis subspecies deeply differed in their impact on soil abiotic conditions. They further strikingly differed from each other and from the surrounding bare soils in fungal community composition. Plant genotype variations accounted for a large part of the fungal composition variability in cushion soils, even when considering geography or soil chemistry, and particularly for the dominant molecular operational taxonomic units (MOTUs). Both saprophytic and biotrophic fungal taxa were related to the MOTUs recurrently associated with a single plant genetic cluster. Moreover, the putative phytopathogens were abundant, and within the same genus (Cladosporium) or species (Pyrenopeziza brassicae), MOTUs showing specificity for each plant subspecies were found. Our study highlights the combined influences of bedrock and plant genotype on fungal recruitment into cushion soils and suggests the coexistence of two mechanisms, an indirect selection resulting from the colonization of an engineered soil by free‐living saprobes and a direct selection resulting from direct plant–fungi interactions.

Details

Title
Differences in the fungal communities nursed by two genetic groups of the alpine cushion plant, Silene acaulis
Author
Roy, Julien 1 ; Jean‐Marc Bonneville 1 ; Saccone, Patrick 1 ; Ibanez, Sébastian 1 ; Albert, Cécile H 1 ; Boleda, Marti 1 ; Gueguen, Maya 1 ; Ohlmann, Marc 1 ; Rioux, Delphine 1 ; Jean‐Christophe Clément 1   VIAFID ORCID Logo  ; Lavergne, Sébastien 1 ; Geremia, Roberto A 1   VIAFID ORCID Logo 

 Laboratoire d’Ecologie Alpine (LECA), University Grenoble Alpes, University Savoie Mont Blanc, CNRS, LECA, Grenoble, France 
Pages
11568-11581
Section
ORIGINAL RESEARCH
Publication year
2018
Publication date
Dec 2018
Publisher
John Wiley & Sons, Inc.
e-ISSN
20457758
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2159636599
Copyright
© 2018. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.