Fig. 3. The morphological effects on Botrytis cinerea strain CGMCC3.20932 hyphae exposed to varying doses of eugenol in potato dextrose broth for 24 h were observed using transmission electron microscopy. A, Control (CK) (0.0 µg/ml eugenol). B and C, Eugenol treatment at the 30% effective concentration (EC30) dose (46.13 µg/ml). D and E, Eugenol treatment at the EC50 dose (72.11 µg/ml). F, Eugenol treatment at the EC90 dose (214.86 µg/ml). CW, cell wall; Cy, cytoplasm; M, mitochondria; N, nucleus; PM, plasma membrane. Bars = 1 μm. The experiment was independently conducted three times, and similar results were obtained.
Eugenol exhibits a spectrum of antimicrobial activities and fungicide efficacy against crop diseases. Xiansu Wang et al. assessed its inhibitory activity against many phytopathogenic fungi, finding it to be particularly effective against #Botrytis cinerea: https://doi.org/10.1094/PHYTO-06-25-0227-R
