Effect of Plant Growth Promoting Microorganisms on Pepper Plants Infected with Tomato Brown Rugose Fruit Virus

Symbiotic interaction between plants and microorganisms in the rhizosphere is an important factor affecting plant growth fitness. Arbuscular mycorrhiza fungi symbiosis increases resistance of to stress factors, including pathogens. Tomato brown rugose fruit virus (ToBRFV) destructive damaging tomatoes peppers with losses that can reach 100%. It listed on list current quarantine organisms Czech Republic. The aim this study was evaluate influence root colonization Funneliformis mosseae or/and Azospirillum brasilense ToBRFV symptoms viral titre reduction. Plants treated arbuscular mycorhizal (AMF) had lower symptom emergence after 14 dpi, however there no difference 21 dpi within all treatments. highest intensity by detected negative both AMF (AZO) lowest positive same treatment (AMF + AZO). Colonization variants went from 20% 41%. Results suggest combination those two beneficial ToBRFV-infected negatively affected colonization.