|本期目录/Table of Contents|

[1]魏伟,钱迎倩,马克平.害虫对转基因Bt作物的抗性及其管理对策[J].应用与环境生物学报,1999,5(02):215-228.
 WEI Wei,et al..Pests resistance to transgenic Bt crops and their management strategies[J].Chinese Journal of Applied & Environmental Biology,1999,5(02):215-228.
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害虫对转基因Bt作物的抗性及其管理对策()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
5卷
期数:
1999年02期
页码:
215-228
栏目:
综述
出版日期:
1999-04-25

文章信息/Info

Title:
Pests resistance to transgenic Bt crops and their management strategies
作者:
魏伟钱迎倩马克平
(中国科学院植物研究所北京100093)
Author(s):
WEI Weiet al.
(Institute of Botany, the Chinese Academy of Sciences, Beijing 100093)
关键词:
关键词 Bt作物 Bt抗性 抗性机制 对策
摘要:
摘要 至今为止,已经有26种植物成功地转入了Bt毒蛋白基因,它们将在防治害虫中发挥重要作用.Bt作物释放的潜在风险是害虫的抗性进化. 害虫对Bt毒蛋白产生抗性的机制包括行为躲避、生理生化机制及遗传机制.抗性等位基因的初始频率和抗性的遗传稳定性等特性影响着抗性管理对策的实施和效用.抗性管理对策包括Bt作物的轮作、转入多个杀虫基因、Bt毒蛋白高剂量表达、低剂量表达和目标特异表达以及避难所策略等,它们是互为补充的.其中,“高剂量/避难所”策略受到广泛的重视.但是,这些策略来自理论数学模型和实验室数据,其有效性尚需要田间实验的检验并得到进一步的完善.
Abstract:
Abstract Insect pests are a major cause of damage to the world,s commercially important agricultural crops. Till now, 26 species of plants have been successfully transferred with insecticidal genes from Bacillus thuringiensis(Bt) to control insect pests. One of the potential risks of commercially release of Bt crops is that insect pest may well evolve resistance to Bt pesticidal proteins. The resistance mechanisms include behavioral avoidance, physiological and biochemical mechanisms and their genetic properties. Successful management for Bt resistance depends on the initial frequency of resistance alleles and genetic stability of resistance, as well as other factors. Based on genetic mathematical models and experimental data, several strategies are suggested to delay the insect resistance to Bt toxins. Among them, the ‘high dose/refuges, tactic is paid more attention for managing resistance which depends on the assumption that resistance alleles are recessive. These tactics need further assessment in the field.

相似文献/References:

[1]史艳霞,张永军,王桂荣,等.Bt抗性和敏感棉铃虫幼虫中肠主要蛋白酶活性的变化[J].应用与环境生物学报,2008,14(03):394.
 SHI Yanxia,et al..Changes in Mid-gut Protease Activities in Larvae of Bt Resistant and Susceptible Strains of Helicoverpa armigera Hübner[J].Chinese Journal of Applied & Environmental Biology,2008,14(02):394.

更新日期/Last Update: 2002-11-05