Preliminary Studies on Antifungal Activity of Xanthium sibiricum and the Endophytic Fungi  

苍耳提取液与植物内生真菌抗菌活性研究(英文)

作　　者：祁力言 刘丽丽[2] 于平儒[2] 陈凤美[2] 

机构地区：[1]无锡市农林局林业站,江苏无锡221000 [2]徐州师范大学江苏省药用植物生物技术重点实验室,江苏徐州221116

出　　处：《Agricultural Science & Technology》2008年第4期144-148,共5页农业科学与技术（英文版）

基　　金：Supported by Platform Project of the Ministry of Science and Technology of China for Microorganism Resources(2005DKA2120721)~~

摘　　要：[Objective] The study was aimed to provide theoretical foundation for developing a new fungicide with high activity,low toxicity and low residua.[Method] Based on the plant growth rate and inhibition zone methods,the antifungal activity of extracts of every organ of Xanthium sibiricum,the fermentation liquid of endophytic fungi MC4-23,and the extract of mycelium were tested with six kinds of pathogenic fungi and three kinds of pathogenic bacteria respectively.[Result] The extract of every organ of Xanthium sibiricum,the fermentation liquid of endophyic fungi MC4-23,and the extract of mycelium all had antifungal activities.The acetone extracts of Xanthium sibiricum had stronger antifungal activities than the ethanol extracts of Xanthium sibiricum.The extracts of leaf have the strongest antifungal activities against fungi and bacteria.The inhibition rates of the six pathogenic fungi were all above 47.8%,and the inhibition diameters of the three pathogenic bacteria were all above 0.5 centimeter.The fermentation liquid of endophytic fungi also had strong activities against the fungi and bacteria.The inhibition rates of the six pathogenic fungi were all above 68.1%.The extracts of root of Xanthium sibiricum and the mycelium of endophytic fungi were all had antifungal activities.[Conclusion] Xanthium sibiricum and endophyic fungi MC4-23 had great value of development and utilization.[Objective] The study was aimed to provide theoretical foundation for developing a new fungicide with high activity,low toxicity and low residua.[Method] Based on the plant growth rate and inhibition zone methods,the antifungal activity of extracts of every organ of Xanthium sibiricum,the fermentation liquid of endophytic fungi MC4-23,and the extract of mycelium were tested with six kinds of pathogenic fungi and three kinds of pathogenic bacteria respectively.[Result] The extract of every organ of Xanthium sibiricum,the fermentation liquid of endophyic fungi MC4-23,and the extract of mycelium all had antifungal activities.The acetone extracts of Xanthium sibiricum had stronger antifungal activities than the ethanol extracts of Xanthium sibiricum.The extracts of leaf have the strongest antifungal activities against fungi and bacteria.The inhibition rates of the six pathogenic fungi were all above 47.8%,and the inhibition diameters of the three pathogenic bacteria were all above 0.5 centimeter.The fermentation liquid of endophytic fungi also had strong activities against the fungi and bacteria.The inhibition rates of the six pathogenic fungi were all above 68.1%.The extracts of root of Xanthium sibiricum and the mycelium of endophytic fungi were all had antifungal activities.[Conclusion] Xanthium sibiricum and endophyic fungi MC4-23 had great value of development and utilization.

关 键 词：Xanthium sibiricum ENDOPHYTIC FUNGI ANTIFUNGAL ACTIVITY 

分 类 号：S567.239[农业科学—中草药栽培]