AM真菌诱导的番茄信号物质及其对根结线虫的抑制效应  

Physiological effect of signal substances in tomato plants induced by arbuscular mycorrhizal fungi

作　　者：盛萍萍[1] 王彬[1] 苑学霞[2] 王小珅 刘润进[1] 

机构地区：[1]青岛农业大学菌根生物技术研究所,青岛266109 [2]山东省农业科学院中心实验室,济南250110

出　　处：《植物病理学报》2012年第3期323-327,共5页Acta Phytopathologica Sinica

基　　金：国家自然科学基金资助项目(30871737)

摘　　要：丛枝菌根（AM）真菌能诱导植物合成一些信号物质,如茉莉酸（JA）、水杨酸（SA）、一氧化氮（NO）、H2O2等,这些信号在AM真菌与植物识别、共生体建立和激活植物防御系统过程中发挥着重要作用[1]。通过AM真菌和根围促生细菌对番茄根结线虫的抑制作用。The split-root cultivated system was employed to study the effect ot inoculation wlm arbuscumr mycorrhizal （AM） fungus Glomus mosseae on inducing salicylic acid （SA）, jasmonic acid （JA）, nitric oxide （NO） and defense enzymes in roots of tomato （Solanum lycopersicum） seedlings, and on its disease reSistance to Meloidogyne incognita. After inoculating G. mosseae, the contents of SA, JA and NO in tomato roots were increased at first and then decreased. When being inoculated with G. mosseae and M. incognita in the same room, the content of the 3 signal substances were the most. Thirty-five days after being inoculated, the activities of superoxide dismutase （SOD）, peroxidase （POD）, phenylalanine ammonia lyase （PAL）,β- 1, 3-glucanase and chitinase were significantly higher than that of the control. The treatment with G. mosseae and M. incognita in the same room showed that the most effect on reducing tomato disease index and M. incognita population, the disease index and the total number of the nematode per gram roots reduced by 60% and 75%, respectively. It suggested that AM fungi signal substances and defense enzymes in plants. could improve plant disease resistance through inducing

关 键 词：番茄根结线虫 AM真菌 信号物质 抑制效应 诱导 植物防御系统 丛枝菌根 一氧化氮 

分 类 号：S482.2[农业科学—农药学]