arglesock says… We knew that pests would evolve resistance to Bt toxin. I wrote recently about the African maize stalk borer (Busseola fusca) evolving resistance that’s inherited as a dominant trait, making it harder for farmers to control. If I see news of control that succeeds against this, I’ll tell you.
Transgenic Bt crops have been grown around the world since the 1990s and have contributed to increased yields by controlling agricultural pests. Due to the importance of this technology, there has been continuous study into the development of resistance to Bt crops and how best to avoid this happening. A recent investigation into the rapid spread of Bt resistance in South Africa has revealed one of the more surprising discoveries to date, that the maize stalk borer (Busseola fusca) has evolved Bt maize resistance inherited as a dominant trait for the first time. This has significant impacts on the management of Bt crops, as current methods for sustaining susceptibility rely on the recessive inheritance of Bt resistance.
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