Bt resistance in Australian insect pest species
Bt resistance in Australian insect pest species
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DOI：
10.1016/j.cois.2016.04.002
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发表时间：
2016-06-01
影响因子：
5.3
通讯作者：
Tay, Wee Tek
中科院分区：
文献类型：
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作者：
Downes, Sharon;Walsh, Tom;Tay, Wee Tek
Bt棉最初于20世纪90年代中期在澳大利亚部署，以控制多食性害虫棉铃虫(Helicoverpa armigera(Hubner))，这种害虫对合成化学物质具有顽强的抗性。实施了保守策略，并管理了对第一代单一毒素技术的抵抗力。十年后，在双重毒素棉花被释放后不久，对其一种成分产生抗性的等位基因的高基线频率促使人们重新评估这项技术潜在风险背后的想法。几篇评论详细介绍了这种抗性的特征，以及在澳大利亚部署第一代和第二代Bt棉的细微差别。在这里，我们探索最近的进展和未来的可能性，以估计澳大利亚有害生物对Bt的抗性，并定义我们认为是实现有效的先发制人战略的关键数据。我们还预测了三种毒素(Cry1Ac，Cry2Ab，Vip3A)Bollgard 3棉花即将部署，并检查了对其新成分Vip3A的抗性方面，我们认为这可能会影响其管理。
Bt cotton was initially deployed in Australia in the mid-1990s to control the polyphagous pest Helicoverpa armigera (Hubner) which was intractably resistant to synthetic chemistries. A conservative strategy was enforced and resistance to first generation single toxin technology was managed. A decade later, shortly after the release of dual toxin cotton, high baseline frequencies of alleles conferring resistance to one of its components prompted a reassessment of the thinking behind the potential risks to this technology. Several reviews detail the characteristics of this resistance and the nuances of deploying first and second generation Bt cotton in Australia. Here we explore recent advances and future possibilities to estimate Bt resistance in Australian pest species and define what we see as the critical data for enabling effective pre-emptive strategies. We also foreshadow the imminent deployment of three toxin (Cry1Ac, Cry2Ab, Vip3A) Bollgard 3 cotton, and examine aspects of resistance to its novel component, Vip3A, that we believe may impact on its stewardship.