Monitoring Antifungal Agents of against and , Associated with Root-Rot Disease.

Root rot of has received great attention due to its threat on the plantation and sustainable utilization of . . To suppress the root-rot disease, natural ingredients are of great importance because of their environment friendly properties. In this study, we found that the methanol extract from leaves has strong antifungal effects on the growth of and resulting into root-rot disease. Essential oil (EO) thereof was found to be the most active. GC-MS analysis revealed 58 ingredients and camphor, camphene, -caryophyllene, and germacrene D were identified as the major ingredients. Further antifungal assays showed that the main compounds exhibit various degrees of inhibition against all the fungi tested. In addition, synergistic effects between . EO and chemical fungicides were examined. Finally, in vivo experiments were conducted and disclosed that root rot could be largely inhibited by the petroleum ether extract from . , indicating that could be a good source for controlling root-rot.