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苏云金杆菌Bacillus thuringiensis是一种重要的昆虫病原细菌,它在芽孢形成时产生对昆虫有毒的晶体蛋白质毒素。通常一个孢囊只产生一个晶体。1979年1月在进行乳状菌的人工培养研究中,从感染乳状病菌的铜绿丽金龟幼虫Anomala corpulenta Mots.的体液上取样进行平板分离,在此过程中分离到一个孢囊有多个晶体的苏云金杆菌新菌株。我们按Lysekno等的观点,以寄主加以编号,标以B.T.AC19。 这个菌株对粘虫Leucania separata有比较高的毒力,对野蚕的效果也比较好。现将该菌株的晶体产生的特点以及其对一些昆虫的杀虫效果报道如下。
Bacillus thuringiensis is an important entomopathogenic bacterium that produces crystalline protein toxins toxic to insects as spores are formed. Usually a cyst produces only one crystal. In January 1979, during the artificial cultivation of lactobacilli, a platelet was isolated from the body fluid of Anomala corpulenta Mots. Infected by the pathogenic bacteria of the mildew bacteria. During this process, New strains of Bacillus. We follow the Lysekno et al. View, with the host numbering, labeled B.T.AC19. This strain has a high virulence against armyworm Leucania separata and is also effective against wild silkworms. Now the crystal characteristics of the strain and its insecticidal effect on some insects are reported below.