Bt toxin


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Bt toxin

Any of a number of pesticidal toxins—e.g., CryAb1—produced by the soil bacterium Bacillus thurigiensis, which are lethal to corn earworms, Colorado potato bugs and others; genetically engineered crops which produce Bt toxins may eventually become affected by Bt-resistant insects.
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The mysterious symptoms returned the following year, also during pollination, and blood tests on 39 of the Filipinos showed an immune response to the Bt toxin created by the GM corn.
Among other recommendations, the OTA urges the USDA to place a ban on the outdoor growing of all GE corn, soy, wheat and rice, and all crops genetically engineered to contain the Bt toxin.
Monsanto engineers, however, isolated and then altered the gene that produces the Bt toxin, and inserted it into the DNA of the cotton plant.
Moreover, in the last few years, the genes that govern the production of the Bt toxin have been moved from the bacterium into crop plants, which account for 20% of the U.
The three studies - two from the Swiss Federal Research Station for Agroecology and Agriculture, and one from the Scottish Crop Research Institute - were conducted on potato and corn varieties that were genetically modified to produce the Bt toxin to ward off various crop pests.
Field efficacy and seasonal expression profiles for terminal leases of single and double Bt toxin cotton genotypes.
Some of the Bt toxin genes that have been transferred to rice make proteins that are highly effective against the major pest, stem borers.
This Bt toxin caused microcytic hypochromic anemia in mice, "even at the lowest tested dose of 27 mg/Kg" in the Mezzomo-led Brazilian study.
Because the Bt toxin is insecticide-like in most of its properties and can be applied like an insecticide, it is not surprising that this product was successful in promoting eradication.
BT corn is a variant of maize, genetically altered to express the bacterial BT toxin, which is poisonous to insect pests.
assumptions: (1) that the Bt toxin is inoffensive to humans, (2) that
In corn ears harvested from the supposed Bt-free zone, researchers found that the amount of Bt toxin decreased as the distance from the Bt-corn increased.