Fourier transform-infrared spectroscopy as a new method for evaluating host resistance in the Dutch elm disease complex

Resistance of elms ( Ulmus spp.) to the pathogenic fungus Ophiostoma novo-ulmi Brasier depends on chemical and anatomical factors that confine the spread of the pathogen in the vascular system of the host. This study focused on detecting chemical differences in 4-year-old Ulmus minor Mill. seedlings before and after inoculation with a virulent O. novo-ulmi isolate. According to symptom development over 60 days, the trees were divided into resistant (0–33% wilting) and susceptible (67–100% wilting) groups. Histochemical tests and Fourier transform-infrared (FT-IR) spectroscopy analysis were per... Mehr ...