Department of Crop and Forest Sciences, University of Lleida-Agrotecnio Center, Av. Rovira Roure 191, 25198 Lleida, Spain.
TRM Ltd, PO Box 493, Scarborough, YO11 9FJ, UK.
Trends Plant Sci. 2020 Mar;25(3):264-278. doi: 10.1016/j.tplants.2019.12.019. Epub 2020 Jan 24.
Bt crops have been grown commercially for more than two decades. They have proven remarkably effective in the control of target insect pests. However, Bt crops can become less effective under various forms of environmental stress. Most studies in this area have considered the effect of environmental stress on Bt insecticidal protein levels or target pest mortality, but not both, resulting in a lack of mechanistic analysis. In this review, we critically examine previous research addressing the impact of environmental stress on the effectiveness of Bt crops. We find that the body of research data is not sufficiently robust to allow the reliable prediction of the performance of Bt crops under extreme climatic conditions.
Bt 作物已经商业化种植了二十多年。它们在控制目标害虫方面已被证明非常有效。然而，Bt 作物在各种形式的环境压力下可能会变得效果不佳。该领域的大多数研究都考虑了环境压力对 Bt 杀虫蛋白水平或目标害虫死亡率的影响，但没有同时考虑两者，因此缺乏机制分析。在这篇综述中，我们批判性地审查了以前关于环境压力对 Bt 作物有效性影响的研究。我们发现，研究数据的数量还不够充足，无法可靠地预测 Bt 作物在极端气候条件下的表现。
