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Nontarget Effects of Genetic Manipulation

Type of Nontarget Effect: Environmental

bentgrass_001: Spread of herbicide-resistance from genetically modified creeping bentgrass into the wild.

canola_002: Experimental crosspollination between transgenic herbicide-resistant canola and wild field mustard led to highly fertile, herbicide-resistant wild field mustard.

canola_003: Transgenes that have escaped from glyphosate-resistant canola can persist in the wild.

cotton_001: Bt cotton showed decreased ability to kill cotton bollworm larvae during flower development and flowering.

cotton_002: Bt cotton had altered protein metabolism and produced less insecticidal toxin in leaves when subjected to high temperatures during boll formation.

maize_003: Monarch butterfly larvae exposed to anthers from Bt maize ate less and gained less weight.

maize_004: Byproducts from Bt maize enter streams, and in feeding experiments affected stream insects.

maize_006: Bt maize had changed lipid composition in stems; also, lipid composition in soil was altered, and soil respiration was reduced.

rice_001: Genes escaped from cultivated GM rice to its weedy and wild relatives.

root nodule bacteria_001: Root nodule bacteria with Bt transgene tended to displace non-manipulated bacteria in legume root nodules.

soybean_001: Herbicide-resistant soybean plants were shorter, with less chlorophyll, lower weight, and increased susceptibility to stem-splitting at high temperatures.

soybean_003: Glyphosate-resistant soybeans exuded glyphosate, carbohydrates, and amino acids into the soil and affected the microorganism soil community.

sugarcane_001: Lectin transgene for stemborer resistance alters growth of sugarcane.

sunflower_001: Wild sunflowers with transgene for Bt toxin produced more seeds than normal wild sunflowers.

weed resistance_001: Increased planting of glyphosate-resistant crops and application of glyphosate causes increase in glyphosate-resistant weed species.


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