甜菜褐斑病内生拮抗菌的筛选、鉴定及其防效测定  

Screening,identification and control efficacy of sugar beet antagonistic endophytic bacteria against Cercospora beticola

作　　者：史应武[1,2] 娄恺[2] 李春[1,3] 王红刚[2] 江雨丽[2] 

机构地区：[1]石河子大学农学院新疆兵团化工绿色过程重点实验室,石河子832003 [2]新疆农科院微生物应用研究所,乌鲁木齐830091 [3]北京理工大学生命科学与技术学院生物技术系,北京100081

出　　处：《植物病理学报》2009年第2期221-224,共4页Acta Phytopathologica Sinica

基　　金：农业部948项目(2006-G62);国家科技基础条件平台项目(2005DKA21201-12)

摘　　要：Three hundred and one endophytic bacteria strains were isolated from healthy sugar beet plants in severely diseased plots in Changji County,Xinjiang Province.Three endophytic bacteria strains,1-5,4-1 and 4-3,showed relatively strong antagonistic against Cercospora beticola.Strain 1-5 was identified as Paenibacillus polymyxa,while strains 4-1 and 4-3 were as Bacillus flexus and Stenotrophomonas sp. by their morphological,physiological and biochemical characteristics.The results from several experiment trials showed that the endophytic bacteria could reduce the disease incidence of sugar beet.The control efficiency reached from 67.6% to 80.2%, indicating that biocontrol with endophytic bacteria was an alternative and potential method to control sugar beet fungi disease.Three hundred and one endophytic bacteria strains were isolated from healthy sugar beet plants in severely diseased plots in Changji County,Xinjiang Province.Three endophytic bacteria strains,1-5,4-1 and 4-3,showed relatively strong antagonistic against Cercospora beticola.Strain 1-5 was identified as Paenibacillus polymyxa,while strains 4-1 and 4-3 were as Bacillus flexus and Stenotrophomonas sp. by their morphological,physiological and biochemical characteristics.The results from several experiment trials showed that the endophytic bacteria could reduce the disease incidence of sugar beet.The control efficiency reached from 67.6% to 80.2%, indicating that biocontrol with endophytic bacteria was an alternative and potential method to control sugar beet fungi disease.

关 键 词：甜菜褐斑病 防效测定 拮抗菌 筛选 鉴定 植物体内 内生细菌 体内分布 

分 类 号：S435.663[农业科学—农业昆虫与害虫防治] S436.411.1[农业科学—植物保护]