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相关概念视频

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Recombinant DNA technology called transgenesis is often used to add a foreign gene or remove a detrimental gene from an organism. Such genetically modified organisms are called transgenic organisms.
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相关实验视频

Updated: Jun 24, 2025

The MultiBac Protein Complex Production Platform at the EMBL
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尽量减少与编码Bt毒素的基因结构相关的IP问题 - 一个案例研究.

Md Mahmudul Hassan1,2, Francis Tenazas1, Adam Williams1

  • 1School of Biosciences, University of Melbourne, Parkville, VIC, 3010, Australia.

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概括
此摘要是机器生成的。

修改后的Bacillus thuringiensis (Bt) Cry1B和Cry1C基因在布拉西卡植物中表达高,导致钻石背幼虫的100%死亡率. 这些耐昆虫的转基因作物可以在降低许可费用的情况下开发.

关键词:
细菌 thuringiensis 这种疾病.Cry1 M M 的意思是什么?在Cry1B中,你会看到Cry1B.在Cry1C的世界里,这是一种Bt毒素.钻石背是一种蝶.基因堆叠是基因堆叠的一个过程.杀虫剂基因是一种杀虫剂基因.

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科学领域:

  • 农业科学 农业科学
  • 分子生物学分子生物学
  • 遗传学 是一个遗传学.

背景情况:

  • 开发基因工程布拉西卡 (大白菜,花菜,大菜) 表达Bacillus thuringiensis (Bt) 杀虫毒素.
  • 修改的Cry1B和Cry1C基因 (Cry1BM,Cry1CM) 旨在最大限度地降低许可成本并优化植物活动.
  • 这是一项针对印度和澳大利亚农民的公共资助计划.

研究的目的:

  • 评估Cry1BM和Cry1CM基因在布拉西卡菌中的杀虫功效.
  • 评估由单 (S4/S7) 或双 (S4S4/S7S7) 地下三叶草特技病毒 (SCSV) 传播者驱动的表达水平.
  • 确定适合开发具有成本效益,耐昆虫的转基因作物.

主要方法:

  • 构建了被改进的Cry1BM/Cry1CM基因,这些基因被引入了Arabidopsis thaliana.
  • 由单个或双个SCSV促进器驱动的表达.
  • 使用钻石背 (Plutella xylostella) 幼虫进行杀虫生物测试.

主要成果:

  • 在转基因Arabidopsis中观察到高水平的Cry1BM/Cry1CM表达,Cry1CM蛋白质积累范围从5.18到176.88μg/g干重.
  • 单个/双个SCSV促销者与基因表达水平之间没有发现相关性.
  • 100%的死亡率的第一阶段钻石背幼虫食转基因叶子;最小的叶子损伤 (0.125对4.2).

结论:

  • 修改后的Cry1基因适合开发抗昆虫的转基因作物.
  • 构建组件似乎可以在没有进一步许可的情况下使用 (除了美国的PAT),大大降低了开发成本.
  • 未来转基因作物植物中具有成本效益的昆虫耐药性的潜力.