Antifungal Activity of Plant extracts against Colletotrichum fructicola,Pathogen of Camellia oleifera

doi:10.16409/j.cnki.2095-039x.2022.04.009

Abstract

Abstract: In order to study the biological control method of Colletotrichum fructicola and develop new botanical pesticides,the inhibitory effects of 70 extracts from 49 plants on C.fruticola were determined by growth rate method.The extracts with significant inhibition activity were screened out,and their antifungal toxicity were determined by concentration gradient test.Petroleum ether extract of Laggera pterodonta and ethyl acetate extract of Leonurus artemisia showed potent antifungal activity against C.fruticola, with inhibitory rates of 54.48% and 50.75%,respectively,at the concentration of 1 mg/mL,and their corresponding medium effective concentrations (EC₅₀) were 0.7013 and 0.6246 mg/mL,respectively.The above results provided a theoretical basis for further development of botanical fungicides by using L.pterodonta and L.artemisia.

Key words: plant extract, growth rate method, toxcity, Colletotrichum fructicola, antifungal activity

CLC Number:

S476

LUO Jianmei, ZHANG Xingyi, WU Jianrong, LIU Li, HONG Yingdi, ZHANG Donghua, YAN Xiaohui. Antifungal Activity of Plant extracts against Colletotrichum fructicola,Pathogen of Camellia oleifera[J]. Chinese Journal of Biological Control, 2022, 38(4): 852-859.

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