新农抗702对水稻抗纹枯病诱导抗性的初步研究  

A Study on the Mechanism of New Ag-antibiotic 702 to the Induced Resistance of Rhizoctonia solani

作　　者：杜亚楠[1] 魏赛金[1,2] 涂国全[1] 李庆蒙[1] 潘晓华[2] 

机构地区：[1]江西农业大学生物科学与工程学院,南昌市发酵应用重点实验室,江西南昌330045 [2]江西农业大学作物生理生态与遗传育种教育部重点实验室/江西省作物生理生态与遗传育种重点实验室,江西南昌330045

出　　处：《江西农业大学学报》2012年第2期270-275,共6页Acta Agriculturae Universitatis Jiangxiensis

基　　金：国家自然科学基金项目(30960011,31071724)

摘　　要：为研究新农抗702对水稻的抗性诱导机制,用新农抗702处理水稻叶片,叶片表现较明显的抗纹枯病作用;用不同质量浓度新农抗702在不同时间下诱导稻苗,测定稻苗体内防御酶的变化,结果表明:质量浓度为1.5μg/mL,处理12 h时,过氧化物酶(POD),多酚氧化酶(PPO)、苯丙氨酸解氨酶(PAL)、过氧化氢酶(CAT)的活性分别达到:16.58 U/(g.min)、160 U/(g.s)、234.02 U/(g.min)、37.67 U/(g.min),酶活性较高,而新农抗702对超氧化物歧化酶(SOD)无显著的影响。In order to study the mechanism of new Ag-antibiotic 702 to the induced resistance,rice leaves induced by new Ag-antibiotic 702,exhibited obvious resistance to Rhizoctonia solani.Then the rice leaves were treated with different concentrations of new Ag-antibiotic 702 and different time and then their defense enzyme activities were measured and analyzed.The results showed that when the concentration of new Ag-antibiotic 702 was 1.5μg/mL,treating-time was 12 h,the enzyme activities were the highest.The activities of peroxidase（POD）,polyphenol oxidase（PPO）,phenylalanine ammonia-lyase（PAL）,catalase（CAT） were 16.58 U/（g·min）,160 U/（g·s）,234.02 U/（g·min） and 37.67 U/（g·min）.However,the activities of SOD treated with new Ag-antibiotic 702 were not significant.

关 键 词：新农抗702 水稻叶片 防御酶 

分 类 号：S435.111.42[农业科学—农业昆虫与害虫防治]