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GMO multi-toxin crops continue to backfire as more insects become resistant to crop chemicals

Posted by truthpills on 2013/05/06

Ethan A. Huff
Natural News
April 29, 2013

Promises made by the biotechnology industry about the alleged robustness of its genetically modified (GM) crops are proving to be false, as research out of the University of Arizona (UA) uncovers a growing resistance by pests to even the most advanced crop chemical technologies in use today. Published in the journal Proceedings of the National Academy of Sciences, the new study explains how multi-toxin GM crops are quickly losing their ability to fend off pests, which could lead to a complete GMO failure in the very near future if alternate interventions are not enacted.

The study evaluated specific GM crops like corn and cotton that have been infused with a genetic mutation involving the bacterium Bacillus thuringiensis (Bt), as well as several other toxins that grow inside the plant to target pests. This so-called “pyramid” strategy, which involves using multiple GM toxins to target the same pests, is said to have been designed for the purpose of thwarting pesticide and insecticide resistance by targeting pests with two or three different toxins all at once rather than just one at time.

But according to the UA report, insects and other pests are outsmarting this approach. After evaluating a series of laboratory experiments they conducted, as well as various computer simulations and other published data on the subject, the team learned that multi-toxin GM crops do not necessarily kill pests redundantly — that is, if a pest is resistant to one toxic GM trait, it does not necessarily respond automatically to the other toxic GM traits. In fact, the pest response to multi-toxin GMOs is so complex and unpredictable that it is already shaping up to be a complete failure.

Read the full article

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