四川松针上散斑壳菌致病毒素的确定及其致病性差异研究  

Pathotoxin Determination of Lophodermium on Pines in Sichuan Province and Their Differences in Pathogenicity

作　　者：骆军[1] 刘应高[1] 黄晓丽[1] 徐明庆[1] 

机构地区：[1]四川农业大学林学院森林保护省重点实验室,四川雅安625014

出　　处：《林业科学研究》2010年第5期685-689,共5页Forest Research

基　　金：四川省科技厅和四川省教育厅基础研究项目"四川松落针病的病原学及其分子生物学特性研究"资助

摘　　要：生物活性测定表明,针叶树散斑壳真菌、松针散斑壳真菌、四川散斑壳真菌及二郎山散斑壳真菌在液体培养基中均可产生导致其寄主针叶枯死的致病毒素。研究表明4种散斑壳真菌毒素均为非蛋白质类组分,结合电导率的测定,发现4种毒素对其来源寄主松针及其他几种松针的毒性存在着差异,其中四川散斑壳真菌所分泌的毒素致病性相对最强。通过对3种不同科属杂草和雪松针叶的生物测定,得出4种毒素均为非寄主专化性毒素。The bioassay results showed that Lophodermium conigenum,L.pinastri,L.sichuanense and L.erlangshanense fungi could produce pathotoxin that might have led to their host dying in the liquid medium.Study showed that the four mycotoxins were non-proteins components,and there were different toxicity between host needles and other several kinds of pine needles by combining with the determination of conductivity,especially the mycotoxin of L.sichuanense fungus had the strongest toxicity.The bioassay of three kinds of weeds from different family and Cedrus deodara showed that the four toxins were non-host specific.

关 键 词：针叶树散斑壳真菌 松针散斑壳真菌 四川散斑壳真菌 二郎山散斑壳真菌 致病毒素 毒性差异 

分 类 号：S791.24[农业科学—林木遗传育种]