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紫外线使苏云金芽孢杆菌伴孢晶体失活机理的研究
引用本文:崔云龙, 田明, 邵宗泽,.紫外线使苏云金芽孢杆菌伴孢晶体失活机理的研究[J].微生物学通报,1993,20(4):193-195.
作者姓名:崔云龙  田明  邵宗泽  
作者单位:山东农业大学生物农药研究开发实验室 泰安;
摘    要:用电镜、电泳、生物鉴定等方法,研究了紫外线对苏云金芽孢杆菌库斯塔克变种的伴孢晶体的影响。结果表明,紫外线能破坏伴孢晶体的表面结构和形态,降低伴孢晶体在碱性液和蚕胃液中的溶解度,5小时以上的长时间照射,能导致伴孢晶体完全不溶,因而不能降解为具有杀虫活性的毒素蛋白而失活。

关 键 词:紫外线    苏云金芽孢杆菌    伴孢晶体  

EFFECT OF ULTRAVIOLET RAYS ON THE ACTIVITY OF PARASPORAL CRYSTAL OF BACILLUS THURINGIENSIS
Cui Yunlong Tian Ming Shao Zongze.EFFECT OF ULTRAVIOLET RAYS ON THE ACTIVITY OF PARASPORAL CRYSTAL OF BACILLUS THURINGIENSIS[J].Microbiology,1993,20(4):193-195.
Authors:Cui Yunlong Tian Ming Shao Zongze
Abstract:The effect of Ultraviolet (UV) rays on the activity of parasporal crystal of Bacillus thuringiensis, var. Kurstaki HD-1 strain was studied by SEM, SDS-PAGE, bioassay and other methods. It was found that the morphology and surface structure of PC were damaged ,and its solubility in alkaline solution or silkworm gut juice was decreased after being irradiated by UV, the solubility was lost completely after a long time irradiation over 5 hours, so the processed PC could not be degraded into protoxin with insecticidal activity and was denatured.
Keywords:Ultraviolet rays  Bacillus thuringensis  Parasporal crystal
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