Endowing crop plants with genes from the Bacillus thuringiensis, or Bt for short is one of the most successful strategies to in controlling pests. However, insect pests are showing resistance off late to the toxins of Bt. UA Professor Bruce Tabashnik and his team has found that a small modification of the toxins can help overcome this defense of the Bt toxin resistant pests. The finding also implied that in resistant strains of the pest, naturally occurring genetic mutations change the lock and once the lock is changed it does not work.
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Smarter toxins help crops fight resistant pests