拮抗疫病芽孢杆菌对辣椒的控病及诱导抗性  

Disease-Control of a Blight-Resistant Bacillus Strain for Pepper and Disease-Resistance Induction in the Plant

作　　者：易龙[1] 严占勇[2] 肖崇刚[1] 

机构地区：[1]西南大学植物保护学院,重庆400715 [2]四川省烟草公司达州市分公司,四川达州635000

出　　处：《西南大学学报（自然科学版）》2009年第8期48-51,共4页Journal of Southwest University(Natural Science Edition)

基　　金：重庆市自然科学基金资助项目(CSTC;2006BB1319)

摘　　要：从辣椒根际土壤中分离出的对辣椒疫霉菌(Phytophthora capsici)有强烈抑制作用的芽孢杆菌Bn-130菌株,温室控病试验表明,菌液处理8d以内再接种病原菌,Bn-130对辣椒疫病控病效果均在60%以上,能显著降低辣椒疫病的发病率.菌液可诱导寄主抗性相关酶的变化,实验检测表明经芽孢杆菌Bn-130菌液处理的辣椒,其体内多酚氧化酶(PPO)、过氧化物酶(POD)、苯丙氨酸解氨酶(PAL)活性均有不同程度的提高,表明菌株Bn-130能激发寄主产生诱导抗病性.A strain of spore-forming bacterium （Bacillus）, Bn-130, was isolated from the rhizospheric soil of pepper （Capsicum annuum）. The result from a greenhouse trial showed that Bn-130 isolate could effectively control the pepper phytophthora blight （Phytophthora capsici）, the control efficiency being over 60% after 8 day treatment with Bn 130. Polyphenol oxidase （PPO）, peroxidase （POD） and phenylalanine ammonium-lyase （PAL） activities were induced by inoculation with Bn-130, increasing the activities of PPO, POD and PAL in varying degrees.

关 键 词：辣椒疫病 芽孢杆菌 控病作用 诱导抗性 

分 类 号：S436.418.1[农业科学—农业昆虫与害虫防治]