摘要
[ Objective] Study on the phylogenetic analysis of the 16S rDNA and insecticidal characteristics of strain BH-1 isolated from diseased larva of Anoplophora glabripennis （Motseh.） [ Method ] The strain was identified by routine method and inoculated onto healthy Anoplophora glabripennis （Motseh.） for observing insecticidal effect, further 16S DNA was amplified by the specific primers for sequencing and homology analysis. [ Result] The mortality of second instar ofAnoplophora glabripennis（ Motseh. ） reached 72.7% 8 d after 10^10cfu/ml BH-1 was inoculated. The homology of 16S DNA sequences between BH-1 and Serratia marcescens accessed in GenBank reached 99.5%. Combined with the results of routine identification, BH-1 was identified as S. marcescens. [Conclusion] BH-1 could be used for biological control ofAnoplophora glabripennis （Motsch.）.
BH-1是在北京大必区一片旱柳树林的光肩星天牛刻槽中分离所得的细菌，室内杀虫生测试验表明其对天牛低龄幼虫有显著的致死作用。笔者通过16S rDNA序列分析和生化指标测定，对BH-1菌株进行丁鉴定。
基金
Co-constructed Program of Beijing Education Committee for Scientific Research Base
Research Fund for the Doctoral Program of Higher Education (20030022015)
Program for Changjiang Scholars and Innovative Research Team in University (PCSIRT0607)~~
