Successes and challenges of managing resistance in Helicoverpa armigera to Bt cotton in Australia.
Successes and challenges of managing resistance in Helicoverpa armigera to Bt cotton in Australia.
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DOI：
10.4161/gmcr.20194
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发表时间：
2012-07-01
期刊：
影响因子：
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通讯作者：
Mahon, Rod
中科院分区：
文献类型：
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作者：
Downes, Sharon;Mahon, Rod
自1996年以来，Bt棉花逐渐被澳大利亚种植者推广和采用。它最初在澳大利亚部署，主要是为了控制多食性害虫棉铃虫（Hubner），在20世纪90年代，由于对合成化学杀虫剂的广泛抗药性，这种害虫变得越来越难以控制。转基因棉花已成为一个关键工具，在一个计划的综合虫害管理的生产系统，减少农药的依赖和相关的问题，其使用。本文综述了Bt棉在澳大利亚的应用情况，包括其表现和用于延长H. armigera。这种方法的一个组成部分是监测这种害虫的抗药性。本文概述了耐药菌株的筛选方法及耐药菌株的特性。从田间种群中分离或在实验室中选择的棉铃虫。然后，我们强调的成功和挑战，在澳大利亚的Bt棉花通过讨论适应性抗性管理的潜在变化。
Bt cotton has been gradually released and adopted by Australian growers since 1996. It was initially deployed in Australia primarily to control the polyphagous pest Helicoverpa armigera (Hubner), which in the 1990s became increasingly difficult to control due to widespread resistance to synthetic chemical insecticides. Bt-cotton has become a key tool in a program of integrated pest management for the production system that reduces pesticide dependence and the problems associated with its use. Herein we overview the deployment of Bt cotton in Australia including its performance and the approaches used to prolong the evolution of resistance to it by H. armigera. An integral component of this approach is monitoring resistance in this pest. We outline resistance screening methods, as well as the characteristics of resistant strains of H. armigera that have been isolated from field populations, or selected in the laboratory. We then highlight the successes and challenges for Bt cotton in Australia by way of discussing adaptive resistance management in light of potential changes in resistance.