一株苏云金芽孢杆菌(Bacillus thuringiensis)的分离与鉴定

The Isolation and Characterization about Bacillus thuringiensis

利用醋酸盐对苏云金芽孢杆菌芽孢萌发的选择性抑制特性 ,采用选择性培养基从土壤中分离苏云金芽孢杆菌 .对分离菌株的个体形态、生理生化特点进行了分类研究 ,确定该菌株即为苏云金杆菌 .采用改进的培养基培养伴胞晶体 ,证明该培养基可在

This article describes a method of isolating Bacillus thuringiensis in soil and characterizing it. Bacillus thuringiensis is isolated from selective medium. Its physiologic and biochemical analysis proves that it is a Bacillus thuringiensis. We use improved medium to culture parasporal crystalline bodies and show that this medium can produce a lot of parasporal crystal in 48 h.