加拿大蓬挥发油对真菌、细菌和植物的生物活性及化学成分分析  

Biological Activities of the Volatile Oil from Conyza canadensis(L.) Cronq.on Fungi,Bacteria and Plants and Its Chemical Constituents

作　　者：杨莉[1] 王春雨[1] 韩梅[1] 肖春萍[1] 王菡[1] 申文文[1] 杨利民[1] 

机构地区：[1]吉林农业大学中药材学院吉林省生态恢复与生态系统管理重点实验室,长春130118

出　　处：《农药》2010年第11期801-803,827,共4页Agrochemicals

基　　金：国家自然科学基金项目(30870252);吉林省主要外来入侵植物种的生态危害及其资源化研究(20050547)

摘　　要：加拿大蓬挥发油对植物、细菌、真菌均有生物活性。对受体植物种子萌发、幼苗生长主要表现为抑制,但对胡萝卜幼根生长促进作用明显,100μL处理下其根长为对照的1.61倍。加拿大蓬挥发油对受试食源性细菌和真菌有良好的广谱抗菌作用,其中对痢疾志贺氏菌、人参立枯病、人参黑斑病病原菌抑菌效果显著。采用GC/MS分析了加拿大蓬挥发油成分,其主要成分为萜烯类物质,其中具有化感潜力的柠檬烯相对含量超过50%。The volatile oil of Conyza canadensis（L.）Cronq. had significant bioactivity on fungi,some food-borne pathogens and plants. It could enhance the length of major root of Daucus carota var. sativa L.,that cultured under the 100 μL volatile oil treatment was 1.61 times as much as that of the control treatment. And the main effect of this oil on germination and seedling growth was inhibition. The antimicrobial test results show that this essential oil had significant broad spectrum of antimicrobial activity against all 6 food-borne pathogens and 2 fungi tested. Especially,Shigella dysenteriae,Alternaria panax Whetz and Rhizoctonia solani were most sensitive to it. The chemical composition of the oil could be identifi ed satisfactorily by GC/MS analyses. The essential oil of C. canadensis was dominated with terpene,the relative amount of limonene was more than 50%.

关 键 词：人参立枯病 人参黑斑病 种子萌发 幼苗生长 食源性细菌 GC/MS 化感作用 

分 类 号：S482.2[农业科学—农药学]