紫草不同溶剂提取物对植物病原菌的抑菌作用  

Plant Pathogen Inhibition of Extracts from Arnebia euchroma (Royle) Johnst with Different Solvents

作　　者：侯美珍[1] 宋德贵[1] 杨真[1] 潘英明[2] 

机构地区：[1]广西师范大学生命科学学院,广西桂林541004 [2]广西师范大学化学化工学院,广西桂林541004

出　　处：《广西师范大学学报（自然科学版）》2006年第3期95-98,共4页Journal of Guangxi Normal University:Natural Science Edition

基　　金：国家自然科学基金资助项目(30460153);广西教育厅科研基金资助项目

摘　　要：采用含毒介质法和菌丝生长速率法，测定紫草不同溶剂提取物对4种常见植物病原细菌和6种病原真菌的抑菌作用。结果表明，石油醚、乙酸乙酯、氯仿各提取物对植物病原细菌和病原真菌均表现较强的抑菌活性，3种提取物对细菌的最低抑菌浓度（MIC）在0．5～1．5g／L，不同溶剂提取物的作用效果差异不明显；对真菌的作用效果石油醚提取物优于氯仿，乙酸乙酯溶剂本身抑制真菌菌丝生长，不同真菌对同种提取物的敏感性有差异。The antimicrobial activities of the extracts from Arnebia euchroma （Royle） Johnst with different solvents were studied by poison media technique ancl hypha growth rate methods. The results showed that the extracts with petroleum ether, ethyl acetate and chloroform respectively had strong inhibition effects on microorganisms respectly, and the minimal inhibitory concentration（MIC） of them all were between 0. 5-1. 5 g/L. The sensitivities of the three extracts to germs had no significant differences, while there were some differeneial sensitivities to fungi between different solvents with petroleum ether extracts had stronger inhibition effects than chloroform extracts. Furthermore, ethyl acetate could prevent the fungi growthing properhy.

关 键 词：生物防治 紫草 提取物 植物病原菌 抑菌作用 

分 类 号：S482.2[农业科学—农药学]