약용식물 추출물의 대추나무 탄저병균 균사 생장 및 발병 억제 효과

Anthracnose is one of the serious diseases in jujube leaves and fruits resulting in reduced production and fruit quality in jujube production. The application of synthetic fungicide to control anthracnose induces various side effects to require for the development of new safe biofungicide for sustainable fruit production. In this study, antifungal activities against Colletotrichum gloeosporioides and inhibition effect of anthracnose development by ethyl acetate extracts of several medicinal plants were screened to select novel candidates applicable for control of anthracnose in jujube. Among medicinal plants, crude extracts from sweet wormwood and resin of peach trees showed inhibition of mycelial growth against C. gloeosporioides with inhibition zone of 15 mm and 17.7 mm in diameter in in vitro antimicrobial activity test, respectively. There was inhibition in development of anthracnose lesion by 58.3% by sweet wormwood, 64.2% by cockscomb, and 60.1% by resin of peach tree and asian plantain in jujube fruits. There was more effective inhibition activity in development of anthracnose by medicinal plant extracts in young fruits than ripening ones. Extracts of tested medicinal plants showing antifungal activities against pathogen and inhibitory effects on anthracnose development could be used as environment-friendly biofungicides in management of anthracnose in jujube production.