The Inhibitory Mechanism of Eugenol on Lasiodiplodia theobromae and Its Induced Disease Resistance of Passion Fruit

The inhibitory effects and mechanisms of eugenol were studied in pathogenic fungi that isolated from passion fruit affected with naturally occurring rot; additionally, the effect treatment on rot resistance was investigated. corresponding results demonstrated fungus causing Lasiodiplodia theobromae minimal concentration against L. 0.30 mg/mL. Eugenol significantly inhibited mycelial growth spore germination this fungus. Further, nucleic acid release, electrical conductivity, protein soluble sugar content gradually increased increasing concentrations. Propidium iodide staining revealed cell membrane integrity hyphae disrupted when treated eugenol. In addition, spread disease spot diameter after inoculation theobromae, effectively APX, SOD, CAT, POD, 4CL, C4H, PAL activities, promoted accumulation disease-stage-related proteins CHI GLU, total phenol flavonoid during storage fruit. Overall, these suggest has good application prospects for effective control