Year: 2025
Type: conference-paper
Abstract: Fusarium Head Blight (FHB) represents a significant threat to wheat production worldwide, causingsubstantial yield losses and grain quality deterioration through mycotoxin contamination. While theinfluence of climatic conditions, agronomic practices, and host genotype on FHB incidence and Fusariumspecies composition is well-established, the role of wheat microbiota in modulating Fusarium infectionremains poorly understood.This study aims to determine whether and how wheat-associated bacteria influence the species compositionof Fusarium in wheat grains. Bacterial diversity analysis has been conducted by using 16S rRNA genesequencing data from over 500 wheat grain samples collected across diverse French agricultural regions.Influence of abiotic parameters such as wheat variety, agricultural practices, climatic conditions andmycotoxin contamination levels on bacterial diversity and community composition is currently beingevaluated. Co-occurrence network analysis will integrate bacterial and Fusarium diversity data from thesame samples to identify significant positive and negative associations between specific taxa and mycotoxinproduction. These associations will be tested in vitro with co-cultures of bacteria (single strain and syntheticcommunities) and Fusarium. The results of the interaction will be evaluated in vitro by measuring bacterialand fungal growth (via qPCR) and mycotoxin production (via HPLC-DAD and LC-MS).This study will provide critical insights into the ecological interactions between wheat-associated bacteriaand Fusarium pathogens, potentially leading to innovative biological strategies for FHB management andmycotoxin mitigation in wheat production systems.
Source: HAL
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: green
OpenAlex ID: W7207201701