Rapid evolution and the cost of resistance to Bacillus thuringiensis in greenhouse populations of cabbage loopers, Trichoplusia ni
Rapid evolution and the cost of resistance to Bacillus thuringiensis in greenhouse populations of cabbage loopers, Trichoplusia ni
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DOI：
10.1098/rspb.2003.2497
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发表时间：
2003-11-07
影响因子：
4.7
通讯作者：
Myers, J
中科院分区：
文献类型：
--
作者：
Janmaat, AF;Myers, J
微生物杀虫剂苏云金芽孢杆菌（Bt）已成为鳞翅目害虫非化学防治的支柱，无论是作为喷雾剂还是通过将Bt毒素掺入转基因作物。鉴于Bt的广泛使用，令人惊讶的是，目前只有一种害虫，即小菜蛾，据报道在实验室外对Bt产生了显著的抗性。与此相反，我们在此报告了对B的耐药性的频繁和快速发展。苏云金杆菌kurstaki（Dipel，Abbott）在商业温室中的甘蓝弯角虫Trichoplusia ni群体中的感染。对Bt的抗性似乎是昂贵的，并且从温室收集并在实验室中保持的种群中的抗性在没有选择的情况下迅速下降。在蔬菜大棚中管理对Bt有抗性的害虫将需要零星使用基于Bt的喷雾剂，或者使用含有其他Bt毒素的喷雾剂。
The microbial insecticide Bacillus thuringiensis (Bt) has become the mainstay of non-chemical control of Lepidopteran pests, either as sprays or through the incorporation of Bt toxins into transgenic crops. Given the wide use of Bt, it is striking that currently only one pest species, Plutella xylostella, has been reported to have developed significant resistance to Bt outside the laboratory. By contrast, we report here the frequent and rapid development of resistance to B. thuringiensis kurstaki (Dipel, Abbott) in populations of cabbage loopers, Trichoplusia ni, in commercial greenhouses. Resistance to Bt appears to be costly and there is a rapid decline of resistance in populations collected from greenhouses and maintained in the laboratory without selection. Management of pests resistant to Bt in vegetable greenhouses will require sporadic use of Bt-based sprays or alternatively use of sprays containing other Bt toxins.