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Morphological characteristics of spore development in an engineered strain of Bacillus thuringeinsis
Author(s): 
Pages: 271-275
Year: Issue:  4
Journal: JOURNAL OF CHINESE ELECTRON MICROSCOPY SOCIETY

Keyword:  苏云金芽孢杆菌芽孢发育芽孢衣孢外壁;
Abstract: 苏云金芽孢杆菌杀虫蛋白的表达及晶体的形成与芽孢的发育有关.本文利用电子显微镜观察了苏云金芽孢杆菌工程菌不同发育时期芽孢的形态结构特点.结果表明,整个芽孢的发育过程依次经历了前芽孢、双层膜芽孢、初生芽孢壁形成、芽孢衣与孢外壁形成以及皮层形成等过程.这与一般芽孢的发育过程不同,即芽孢衣与孢外壁的形成时期早于皮层;另外发现孢外壁包被有膜结构,这表明杀虫晶体蛋白的超量表达可能会影响到芽孢的发育.
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