| Title: |
Combining wheat and diverse perennial species: What is the impact on Z.tritici development and the wheat microbiome? |
| Authors: |
Besson, Lisa; Fontaine, Sébastien; Alvarez, Gaël; Bécu, Thomas; Duchene, Olivier; Niboyet, Audrey; Gross, Nicolas; Marliac, Gaëlle |
| Contributors: |
Unité Mixte de Recherche sur l'Ecosystème Prairial - UMR (UREP); VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE); Agroécologie et Environnement (AGE); ISARA; Institut d'écologie et des sciences de l'environnement de Paris (iEES Paris); Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE); AgroParisTech; VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS); Génétique Diversité et Ecophysiologie des Céréales (GDEC); Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Clermont Auvergne (UCA) |
| Source: |
14th Conference of the European Foundation for Plant Pathology; https://hal.science/hal-05344982; 14th Conference of the European Foundation for Plant Pathology, Jun 2025, Uppsala, Sweden |
| Publisher Information: |
CCSD |
| Publication Year: |
2025 |
| Subject Terms: |
Crop diversification; Disease regulation; Wheat; Perennial species; Microbiome; [SDV.BV.PEP]Life Sciences [q-bio]/Vegetal Biology/Phytopathology and phytopharmacy; [SDV.SA.AGRO]Life Sciences [q-bio]/Agricultural sciences/Agronomy |
| Subject Geographic: |
Uppsala; Sweden |
| Description: |
International audience ; Increasing biodiversity in agroecosystems, is desirable for maintaining ecosystem functions, including disease regulation. Strip-intercropping is one of the most effective crop diversification strategy used to limit disease development. However, it generally consists of the association of two crops, whereas several ecological studies recommend highest levels of diversity. In this context, a new cropping system called “Agroprairie” has been designed resulting from the association of alternating strips of wheat and diverse prairies (>10 plant species). The aim of this study is to explore the effect of this new cropping system on the regulation of Zymoseptoria tritici the causal agent of Septoria tritici blotch (STB), one of the most damaging leaf diseases of wheat.To achieve this, four wheat cultivars with contrasting susceptibilities to STB, grown in “agroprairies” associated with four types of prairies (with different growth strategies and legume proportions) were investigated to explore the influence of intra- and interspecific diversity on the development of STB. In addition, a reduced number of plots with the most STB-susceptible cultivar was inoculated with Z.tritici to test the resistance of the associated wheat to inoculation. In parallel, to explore the role of microbiome in disease development, rhizosphere and roots DNA from associated wheat and prairies samples was extracted and sequenced using 16S rDNA. Four different STB incidence and severity notations were recorded between flowering and ripening stage. The results showed that agroprairies with the highest biomass and proportion of legumes reduce the incidence of STB compared to wheat monoculture. However, the protection afforded to wheat by prairie strips is lost when Z.tritici is inoculated, which means that this protection may mainly come from a barrier effect. In parallel, preliminary results show that agroprairies modify the composition of the bacterial rhizospheric and root microbiome of wheat, and increase the ... |
| Document Type: |
conference object |
| Language: |
English |
| Availability: |
https://hal.science/hal-05344982 |
| Accession Number: |
edsbas.6BA1E46F |
| Database: |
BASE |