中国冬小麦主产区小麦赤霉病菌株的毒素产量与致病力的相关性  

Relevance between pathogenicity and toxin production of Fusarium graminearum in major winter wheat areas of China

作　　者：申成美[1,2] 李伟[2] 孙海燕[2] 王云鹏[1] 刘红霞[1] 郭坚华[1] 陈怀谷[2] 

机构地区：[1]南京农业大学植物保护学院植物病理学系,江苏省生物源农药工程中心,农作物生物灾害综合治理教育部重点实验室,江苏南京210095 [2]江苏省农业科学院植物保护研究所,江苏南京210014

出　　处：《江苏农业学报》2012年第6期1283-1287,共5页Jiangsu Journal of Agricultural Sciences

基　　金：国家农业行业专项(NYHYZX3-15);国家农业产业体系(CARS-3-1-17)

摘　　要：由禾谷镰孢复合种(F.graminearum species complex)引起的小麦赤霉病是中国长江中下游和黄淮麦区广泛发生的一种毁灭性病害。赤霉病不仅造成小麦产量的严重损失,赤霉病菌所产生的脱氧雪腐镰孢菌烯醇(DON)毒素严重威胁人畜健康。本试验对采集和分离自中国4个小麦主产区的小麦赤霉病菌的致病力进行了测定,并采用HPLC方法检测了病麦粒中DON毒素的含量。结果表明,DON化学型菌株群体的DON毒素产量显著高于NIV化学型菌株群体(P<0.05),3-AcDON化学型菌株群体的DON毒素产量显著高于15-AcDON化学型菌株群体(P<0.05)。相关性分析发现,所有小麦赤霉病菌株的DON毒素产量与病菌致病力均呈显著正相关。Wheat scab caused by Fusarium graminearum species complex is the most destructive and economically important diseases of wheat in lower reaches of the Yangtze River and the Yellow-Huai River Basin.Wheat scab can cause yield loss,and the pathogen of which produces deoxynivalenol（DON） that seriously threatens human and animal health.The pathogenicity of Fusarium graminearum gathered from four main winter wheat production areas were measured,and DON productions in infected wheat grains were determined by HPLC.The DON productions of DON-chemotype isolates were significantly higher than those of NIV-chemotype isolates（P0.05）.The DON productions of 3-AcDON-chemotype isolates were significantly higher than those of 15-AcDON-chemotype isolates（P﹤0.05）.There was a significant correlation between the pathogenicity and DON productions of Fusarium graminearum.

关 键 词：禾谷镰孢菌 毒素 化学型 致病力 

分 类 号：S512.1[农业科学—作物学]