相关实验视频

Updated: Jan 7, 2026

The Insect Galleria mellonella as a Powerful Infection Model to Investigate Bacterial Pathogenesis

The Insect Galleria mellonella as a Powerful Infection Model to Investigate Bacterial Pathogenesis

Published on: December 11, 2012

来自Bacillus thuringiensis的Cry4Aa毒素JW-1的特征及其对Bradysia difformis的杀虫活性

Ping Xu¹, Shaoxuan Qu¹, Jinsheng Lin¹

¹Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Institute of Vegetable Crops, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China.

|December 30, 2025

概括

修灵菌株 (Bacillus thuringiensis) 菌株JW-1产生Cry4Aa,这是一种对害虫Bradysia difformis有效的强有力的毒素. 这一发现支持开发可持续农业的生物控制策略.

科学领域:

微生物学微生物学
昆虫毒理学昆虫毒理学
基因组学就是基因组学.

背景情况:

布拉迪西亚形虫 (Bradysia difformis) 是中国生产中的重要害虫.
使用Bacillus thuringiensis (Bt) 进行生物控制,为化学农药提供了一个环保的替代方案.

研究的目的:

为了识别和表征Bt菌株JW-1的杀虫基因,用于控制Bradysia difformis.
评估已识别的Cry4Aa毒素对B. difformis幼虫的生物活性.

主要方法:

对Bt株JW-1的全基因组测序.
cry4Aa基因的识别和放大.
在大肠杆菌中表达和净化Cry4Aa融合蛋白.
幼虫养生物测试以确定毒性 (LC50).

主要成果:

Bt菌株JW-1具有具有七个质粒的基因组,其中一个编码六个杀虫基因.
cry4Aa基因成功地被放大,表达和净化.
纯化Cry4Aa对B.diffformis幼虫具有高毒性,LC50为2.71 ng/mL.

结论:

来自Bt菌株JW-1的Cry4Aa毒素被证实是一种强效和特定的杀虫剂.
这种Cry4Aa毒素代表了开发针对Bradysia difformis.生物控制剂的有希望的候选人.

关键词:

细菌 thuringiensis JW-1 的使用情况.布拉迪西亚的形状不同.在Cry4Aa.生物控制生物控制杀虫活动杀虫活动

更多相关视频

Functional Characterization of Carboxylesterases in Insecticide Resistant House Flies, Musca Domestica

Functional Characterization of Carboxylesterases in Insecticide Resistant House Flies, Musca Domestica

Published on: August 23, 2018

Characterizing Herbivore Resistance Mechanisms: Spittlebugs on Brachiaria spp. as an Example

Characterizing Herbivore Resistance Mechanisms: Spittlebugs on Brachiaria spp. as an Example

Published on: June 19, 2011

相关概念视频

Chemical Agents for Microbial Control

Chemical Agents for Microbial Control

Chemicals play important roles in controlling microbial growth by targeting microbial structures and functions as sanitizers, antiseptics, disinfectants, and sterilants.Alcohols are commonly used sanitizers, effectively disrupting lipid membranes, which compromises cell integrity. They are also used as antiseptics and disinfectants due to their rapid action and versatility.Phenols and their derivatives phenolics , known for denaturing proteins and disrupting cell membranes, are particularly...