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Bacillus thuringiensis
(redirected from Bt toxins)

    Also found in: Wikipedia 0.04 sec.

Bacillus thuringiensis

Soil bacterium that produces pesticidal toxins. Once in the gut of an insect larva, the bacteria produce crystalline toxins that eventually cause the gut to become fatally paralysed. A gene from B thuringiensis was inserted into US maize plants in 1995, to produce genetically modified maize with built-in resistance to the European corn-borer.



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Most of the Bt toxins belong to the Cry (crystal) protein family.
Starlink corn: a risk analysis. (Commentaries) by Goldman, Lynn R. / Environmental Health Perspectives
Evidence includes a buildup of Bt toxins in soil, a National Academy of Sciences report that found gaps in regulatory coverage and acknowledgement by the US Department of Agriculture that a `comprehensive approach to evaluating long-term and secondary effects' of bioengineered products is needed.
Shareholders Push Hershey to Report On Genetically Engineered ... by Business Wire
For example, researchers don't know what long-term effects Bt toxins might have on soil organisms, he says.
Bt Corn Risk to Monarchs Is "Negligible" by Milius, S. / Science News
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