Publications scientifiques
2019PrépublicationanglaisAccès ouvert
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Publications scientifiques
Marie Simonin
Autres affiliations : Université de Montpellier · Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement · Institut de Recherche en Horticulture et Semences · Institut de Recherche pour le Développement
Cindy Dasilva
Autres affiliations : Université de Montpellier · Institut de Recherche pour le Développement
Gilles Béna
Autres affiliations : Université de Montpellier · Institut de Recherche pour le Développement
Lionel Moulin* (Auteur correspondant)
Autres affiliations : Université de Montpellier · LMI Adaptation des Plantes et Microorganismes Associés aux Stress Environnementaux · Institut de Recherche pour le Développement
Valeria Terzi
Diégane Diouf
Autres affiliations : Cheikh Anta Diop University
Aboubacry Kane
Autres affiliations : Cheikh Anta Diop University
bioRxiv (Cold Spring Harbor Laboratory)
Abstract Here, we assessed the relative influence of wheat genotype, agricultural practices (conventional vs organic) and soil type on the rhizosphere microbiome. We characterized the prokaryotic (archaea, bacteria) and eukaryotic (fungi, protists) communities in soils from four different countries (Cameroon, France, Italy, Senegal) and determined if a rhizosphere core microbiome existed across these different countries. The wheat genotype had a limited effect on the rhizosphere microbiome (2% of variance) as the majority of the microbial taxa were consistently associated to multiple wheat genotypes grown in the same soil. Large differences in taxa richness and in community structure were observed between the eight soils studied (57% variance) and the two agricultural practices (10% variance). Despite these differences between soils, we observed that 179 taxa (2 archaea, 104 bacteria, 41 fungi, 32 protists) were consistently detected in the rhizosphere, constituting a core microbiome. In addition to being prevalent, these core taxa were highly abundant and collectively represented 50% of the reads in our dataset. Based on these results, we identify a list of key taxa as future targets of culturomics, metagenomics and wheat synthetic microbiomes. Additionally, we show that protists are an integral part of the wheat holobiont that is currently overlooked. Graphical Abstract