玉米圆斑病菌毒素的理化性质及致病作用  

Physicochemical Property and Pathogenicity of Toxin Produced by Bipolaris zeicola

作　　者：薛春生[1] 王月[1] 张美丽[1] 张跃文[1] 张莉[1] 马昌广 

机构地区：[1]沈阳农业大学植物保护学院,辽宁沈阳110866 [2]大连市农业科学院,辽宁大连116024

出　　处：《贵州农业科学》2011年第4期87-89,共3页Guizhou Agricultural Sciences

基　　金：国家"十一五"科技支撑计划项目"玉米重大病虫害防控技术"(2006BAD08A06)

摘　　要：为了解玉米圆斑病菌毒素的致病机理,采用种子萌发和种子根伸长抑制法对玉米圆斑病菌产生毒素的致病作用进行了初步研究。结果表明:玉米圆斑病菌毒素的化学成分主要为蛋白质,含量为58.6μg/mL。种子萌发抑制率,PH4CV最低,仅10.37%;黄早四最高,达73.33%。根伸长抑制率,PH6WC最低,仅48.30%;昌7-2最高,达72.87%。玉米小斑病菌产生毒素的生物测定以种子根伸长抑制法较准确。Pathogenicity of toxin produced by Bipolaris zeicola was preliminarily studied by seed germination and root elongation inhibition methods to know the pathogenesis of toxin produced by Bipolaris zeicola.The results showed that the main chemical composition of toxin was protein,58.6 μg/mL,seed germination inhibition rate of PH4CV was the lowest,10.37%,and that of Huangzaosi was the highest,73.33%.The root elongation inhibition rate of PH6WC was the lowest,48.30%,and that of Chang7-2 was the highest,72.87%.Root elongation inhibition method was the better method for bioassays of toxin produced by Bipolaris zeicola.

关 键 词：玉米圆斑菌 毒素 理化性质 致病作用 

分 类 号：S435.131[农业科学—农业昆虫与害虫防治]