毒素在稻纹枯病菌致病中的作用分析  

Effects of toxins on pathogenesis of Rhizoctonia solani

作　　者：刘洪涛[1,2] 蔡超[1] 梁红艳[1] 蓝绍明[1] 张君成[1] 

机构地区：[1]广西大学农学院,南宁530004 [2]山东莱芜烟草有限公司,莱芜271100

出　　处：《植物保护》2011年第6期177-179,共3页Plant Protection

基　　金：广西教育厅科研基金(200709MS023)

摘　　要：用水稻胚根生长抑制法测定了10个稻纹枯病菌菌株在寄主体外产生毒素的能力,发现不同菌株的产毒能力各不相同,且产毒量差异极显著。用水稻离体叶接种法测定了这10个菌株的致病力,结果表明:不同菌株的致病力也各不相同,且差异极显著。相关分析发现,菌株的体外产毒能力与致病力高度正相关(R=0.915 2)。这些结果表明:稻纹枯病菌毒素的分泌可能在其致病过程中起重要作用。The capability of toxin production in vitro of 10 strains of Rhizoctonia solani was determined using the method of seed germination inhibition. The results showed that the capability was different among different strains and the differences among strains reached significant level （p〈0. 01）. The pathogenicity of the 10 strains was determined using the method of detached-leaf inoculation. The results showed that the pathogenicity was also different among different strains, and the differences reached significant level （p〈0. 01）. The capability of toxin production of the strains in vitro was highly positively correlated with the pathogenicity of the strains, according to correlation analysis. These results suggest that the toxin secreted by R. solani might play an important role in pathogenesis of this pathogen on rice.

关 键 词：稻纹枯病菌 毒素 致病作用 

分 类 号：S435.111.42[农业科学—农业昆虫与害虫防治]