13种萜类化合物对胶孢炭疽菌和链格孢的抑制活性

摘要

Colletotrichum and Alternaria are the important plant pathogenic fungi,which have caused great loss to agricultural production.13 terpenoid compounds were selected to test their antifungal activity on Colletotrichum gloeosporioides and Alternaria sp.by mycelium growth rate method.The results showed that carvacrol,eugenol,isoeugenol,cuminaldehyde and thymol had good antimicrobial activities on the two pathogens,and the antifungal activity of carvacrol was the strongest with the IC50 values of 40.89 μg/L and 18.19 μg/L,respectively.The results provide theory basis for development and utilization of the plant essential oil and natural fungicide.%炭疽菌Colletotrichum和链格孢Alternaria是引起植物病害的重要真菌,给农业生产造成巨大的损失.本研究选取13种萜类化合物,采用菌丝生长速率法对胶孢炭疽菌、链格孢进行抑菌活性分析.研究结果表明:香芹酚、丁香酚、异丁香酚、枯茗醛、百里香酚对两种病原菌有较好的抑菌活性,其中香芹酚对胶孢炭疽菌和链格孢的抑菌活性最强,IC50分别为40.89 μg/mL和18.19 μg/mL.本试验为植物精油和天然杀菌剂的开发利用提供理论依据.