Inflammatory Bowel Diseases Incidence in USA (STATS)
Inflammatory Bowel Diseases Incidence in USA
Ulcerative Colitis and Crohn's Disease
Plotted against the acres of BT corn .
Bacillus thuringiensis (Bt) corn is a GMO corn that produces proteins that are toxic to certain insect pests.
To create a Bt crop variety, plant scientists select the gene for a particular Bt toxin and insert it into the cells of corn or cotton plant at the embryo stage. The resulting mature plant has the Bt gene in all its cells and expresses the insecticidal protein in its leaves.
Bacillus thuringiensis (Bt) is a soil bacterium that produces insecticidal toxins. Genes from Bt can be inserted into crop plants to make them capable of producing an insecticidal toxin and therefore resistant to certain pests.
In the controversial experiments, monarch larvae fed on milkweed leaves dusted with pollen from N4640-Bt corn (a commercial variety containing a gene for an insecticidal Bacillus thuringiensis protein as a defense against infestation with the European corn borer) ate less, grew more slowly and had higher mortality than those fed plain leaves or leaves dusted with pollen from a nontransgenic corn line. After four days, survival of larvae exposed to N4640-Bt corn was 56% compared with 100% for the pollen-plus and pollen-minus controls. The monarch, whose larvae feed exclusively on milkweed leaves, is regarded as a particularly sensitive indicator of environmental disturbance.
Plant scientists and representatives of life science companies criticized the work as premature and incomplete.
Critics of the work have particularly highlighted a number of weaknesses of the paper. The first is that it is unsurprising that a lepidopteran species such as the monarch should be affected when fed plant material that contains a protein used precisely because of its lepidopteran-specific killing properties.
Ulcerative Colitis and Crohn's Disease
Plotted against the acres of BT corn .
Bacillus thuringiensis (Bt) corn is a GMO corn that produces proteins that are toxic to certain insect pests.
To create a Bt crop variety, plant scientists select the gene for a particular Bt toxin and insert it into the cells of corn or cotton plant at the embryo stage. The resulting mature plant has the Bt gene in all its cells and expresses the insecticidal protein in its leaves.
Bacillus thuringiensis (Bt) is a soil bacterium that produces insecticidal toxins. Genes from Bt can be inserted into crop plants to make them capable of producing an insecticidal toxin and therefore resistant to certain pests.
In the controversial experiments, monarch larvae fed on milkweed leaves dusted with pollen from N4640-Bt corn (a commercial variety containing a gene for an insecticidal Bacillus thuringiensis protein as a defense against infestation with the European corn borer) ate less, grew more slowly and had higher mortality than those fed plain leaves or leaves dusted with pollen from a nontransgenic corn line. After four days, survival of larvae exposed to N4640-Bt corn was 56% compared with 100% for the pollen-plus and pollen-minus controls. The monarch, whose larvae feed exclusively on milkweed leaves, is regarded as a particularly sensitive indicator of environmental disturbance.
Plant scientists and representatives of life science companies criticized the work as premature and incomplete.
Critics of the work have particularly highlighted a number of weaknesses of the paper. The first is that it is unsurprising that a lepidopteran species such as the monarch should be affected when fed plant material that contains a protein used precisely because of its lepidopteran-specific killing properties.
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