JQ5A9278

13068

25 mai 2021 11:15

25 mai 2021 11:16

Fusarium head blight (FHB) is a devastating disease of wheat. Worldwide, Fusarium graminearum is the most dominant FHB-causing species. Its most common toxin, deoxynivalenol (DON), impairs food and feed safety and has an enormous economic impact. Agronomic factors such as crop rotation, soil management and host genotype strongly influence the occurrence of F. graminearum. Infected plant debris from previous crops, on which perithecia and ascospores develop, represent the main source for FHB, and hence, improved cropping systems aim to reduce this inoculum to decrease the infection risk. The best measure to evaluate the disease pressure is spore traps that detect deposited airborne ascospores. Commercial spore traps are expensive and require power sources, thus, they are not suitable for investigations in field experiments with different treatments. In consequence, we developed spore traps containing a Petri dish with Fusarium-selective agar, protected by aluminum dishes and attached on a wooden board. We compared the data of our low-cost trap with those of a commercial high-throughput jet sampler and obtained equivalent results. In field experiments to compare cropping systems, we observed a high correlation between the DON content in wheat grains and the number of colonies from deposited spores. Our spore trap proved to be a highly valuable tool to not only study FHB epidemiology but also to identify innovative cropping systems with a lower risk for FHB and DON contamination.

None

• AB - Transversal
• FREDO lutte
• FREDO santé végétale
• FREDO technologie et innovation
• fusarium head blight
• GEO Allemagne
• GEO Suisse
• blé

• fusarium
• deoxynivalenol
• food safety
• forecast
• integrated management
• wheat

Agronomy

11

987

2021/5

3 mai 2021

10.3390/agronomy11050987 Le DOI est une URL unique de référencement d'une publication. Il est donc plus fiable et permanent qu'une URL classique