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中国农学通报 ›› 2007, Vol. 23 ›› Issue (9): 82-82.

• 植物保护 农药 • 上一篇    下一篇

苏云金芽孢杆菌伴孢晶体的形成及降解

朱育菁,蓝江林,阮传清,刘 芸,刘 波   

  • 出版日期:2007-09-05 发布日期:2007-09-05

Formation and Decomposition of Crystal of Bacillus thuringiensis

Zhu Yujing, Lan Jianglin, Ruan Changqing, Liu Yun, Liu Bo   

  • Online:2007-09-05 Published:2007-09-05

摘要: 【研究目的】研究苏云金芽孢杆菌(Bacillus thuringiensis,Bt)伴孢晶体的形成及降解,为其生物学特性的系统研究和活性成分分析提供理论基础。【方法】将Bt菌株HD-1在牛肉膏蛋白胨固体培养基上30℃下培养24h,制成菌悬液后用日本电子JEM100-CX-II透射电子显微镜观察伴孢晶体的形成。采用五种溶解方法降解Bt菌株HD-1和LSZ9408伴孢晶体后,进行SDS-PAGE电泳。【结果】此研究的电镜观察表明Bt HD-1在分裂过程中形成芽孢和晶体,晶体为大菱形。Bt LSZ9408晶体含有130和65kDa的毒蛋白,HD-1晶体含有130、65和25kDa的毒蛋白。【结论】Bt LSZ9408和HD-1伴孢晶体都包含CryI和CryII蛋白质毒素。

关键词: 黑线姬鼠, 黑线姬鼠, 不同年龄组, 繁殖力, 变化规律

Abstract: 【OBJECT】To study the formation and decomposition of crystal of Bacillus thuringiensis (Bt), and supply theoretics basis for systmic study on its biological characteristic and analysis of its active component. 【METHOD】Bt strain HD-1 was cultured on NA culture media for 24h under 30℃, and then was made into bacterial suspension and observed the formation of crystal with transmission electron microscope (JEM 100-CX-II). Five dissolution methods were used to decompose the crystals of Bt HD-1 and Bt LSZ9408, after that SDS-PAGE was conducted. 【RESULTS】 Bt Hd-1 formed spores and crystals during split process, and the shape of crystal was big diamond. Bt LSZ9408 contained 130 and 65kDa toxic proteins, while Bt HD1 had 130, 65 and 25kDa toxic proteins. 【CONCLUSION】Both of crystals of Bt LSZ9408 and HD-1 contained CryI and CryII type protein toxins.

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