ارزیابی اثر بازدارندگی اسانس گیاه مفراح Nepeta crispa بر روی برخی باکتری های بیمارگر گیاهی

In recent years, there has been a growing focus on managing plant diseases with natural products. Plant essential oils are effective for controlling plant diseases because they are safe for humans and the environment, as well as cost-effective. In this study, the antibacterial activity of the essential oil of Nepeta crispa willd. from the Lamiaceae family, including the native plants of Iran, was investigated. The essential oil was extracted Distillation method from the plant and tested for its antibacterial effect on a number Gram-negative and positive bacteria, including Brenneria nigrifluens, Xanthomonas performance, Pectobacterium carotovorum subsp. carotovorum, Escherichia coli, Mycetocola sp, Serratia marcescens, Dickeya dadantii, Curtobacterium flaccumfaciens pv. flaccumfaciens, Pseudomonas syringae pv. actinidae, Burkholderia gladioli, Clavibacter tessellarius, Rhodococcusfascians. The obtained results indicate that the essential oil of Nepeta crispa with a significant antibacterial effect has shown a spectrum of inhibitory effects, which in concentration 10 5 mg has inhibitory zones with a diameter between 11.5 and 48 mm. of theinvestigated species, the highest growth inhibitory effect on Xanthomonas performans isolates and the lowest growth inhibitory effect on Burkholderia gladioli isolates. Gas Chromatography-Mass Spectrometry analysis is currently underway to identify the substances present in the essential oil of the Nepeta crispa willd.plant. These preliminary findings for the first time revealed a wide range of antibacterial capabilities in Nepeta crispa. Based on these results, the essential oil of Nepeta crispa willd. could be used as a natural agent to control plant pathogenic bacteria. Furthermore, isolating the bioactive compounds of this plant may offer opportunities for use in the agricultural sectors.