Organic Consumers Association

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Rigging the Science of GMO Ecotoxicity

Researchers who work on GMO crops are developing special “artificial diet systems”. The stated purpose of these new diets is to standardise the testing of the Cry toxins, often used in GMO crops, for their effects on non-target species. But a paper published last month in the journal Toxins implies a very different interpretation of their purpose. The new diets contain hidden ingredients that can mask Cry toxicity and allow them to pass undetected through toxicity tests on beneficial species like lacewings (Hilbeck et al., 2018). Thus the new diets will benefit GMO crop developers by letting new ones come to market quicker and more reliably. Tests conducted with the new diets are even being used to cast doubt on previous findings of ecotoxicological harm.

GMO Cry toxins

Cry toxins are a family of highly active protein toxins originally isolated from the gut pathogenic bacterium Bacillus thuringiensis (Latham et al., 2017). They confer insect-resistance and up to six distinct ones are added to GMO corn, cotton, and other crops (Hilbeck and Otto, 2015).

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