拮抗细菌B20-006对玉米根系内生细菌种群的影响  

Effects of Bacillus subtilis strain B20-006 on population of endophytic bacteria in corn

作　　者：高增贵[1] 刘限[1] 陈捷[1] 庄敬华[1] 薛春生[1] 

机构地区：[1]沈阳农业大学植物保护学院,沈阳110161

出　　处：《植物病理学报》2006年第6期569-571,共3页Acta Phytopathologica Sinica

基　　金：国家"十五"科技攻关项目(2004BA509B04);国家粮食丰产科技工程项目(2004BA520A-11)

摘　　要：Treatment of corn seeds with Bacillus subtilis strain B20-006,a potential biocontrol agent,had no effect on type of endophytic bacteria on corn.However,it stimulated endophytic bacterial reproduction in the plants.B20-006 did not affect the original population of endophytic bacteria in corn roots in early stage.In late stage,population of endophytic bacteria in corn roots treated with the bacteria was significantly higher than CK.Colonization of the bacteria in corn roots would benefit the micro-ecological resistance of cultivars against the diseases.The results suggested that strain B20006 could enhance the percentage of antagonistic endophytic bacteria against Rhizoctonia solani.The percentage in the resistant cultivar,Lianyu 11 was higher than in the susceptible one,Lianyu 13.Treatment of corn seeds with Bacillus subtilis strain B20-006, a potential biocontrol agent,had no effect on type of endophytic bacteria on corn. However, it stimulated endophytic bacterial reproduction in the plants. B20-006 did not affect the original population of endophytic bacteria in corn roots in early stage. In late stage, population of endophytic bacteria in corn roots treated with the bacteria was significantly higher than CK. Colonization of the bacteria in corn roots would benefit the micro-ecological resistance of cultivars against the diseases. The results suggested that strain B20-006 could enhance the percentage of antagonistic endophytic bacteria against Rhizoctonia solani. The percentage in the resistant cultivar, Lianyu 11 was higher than in the susceptible one, Lianyu 13.

关 键 词：拮抗细菌 玉米 内生细菌 种群 

分 类 号：S435.13[农业科学—农业昆虫与害虫防治]