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Unintended Effects of Genetic Manipulation

Intended Effect: Herbicide Resistant Plants (with resistance to the following herbicides:)


Various Bleaching Herbicides

tobacco_001: Transgenic tobacco with resistance to bleaching herbicides had altered composition of carotenoids.



Glufosinate

arabidopsis_005: Unintended changes in gene expression were observed in Arabidopsis plants engineered for resistance to the herbicide glufosinate.

barley_004: A group of transgenic barley plants expressing the bar selectable marker gene did not produce viable offspring.

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

canola_004: Conventional, certified canola seedlots were contaminated with genetically engineered seeds.

canola_005: Herbicide-resistant canola volunteers were still detected after ten years of stringent control.

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



Glyphosate (Roundup)

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

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

canola_004: Conventional, certified canola seedlots were contaminated with genetically engineered seeds.

canola_006: Fewer wild bees were observed in glyphosate-resistant canola fields.

cotton_004: Glyphosate-resistant cotton showed abnormal reproductive development when sprayed with glyphosate.

cotton_005: Fruiting morphology was altered when glyphosate-resistant cotton was sprayed with glyphosate.

maize_007: Western corn rootworms were found feeding on volunteer corn plants expressing a Bt toxin specific to that pest.

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

soybean_002: Diet containing glyphosate-resistant soybeans affected the nuclei of liver cells in mice.

soybean_003: Glyphosate-resistant soybeans had lower yields.

soybean_004: Root colonization of glyphosate-resistant soybeans by pathogenic Fusarium fungi increased with glyphosate application.

soybean_005: Glyphosate-resistant soybeans have altered root nodules when sprayed with glyphosate.

soybean_006: Transgenic DNA from glyphosate-resistant soybeans was detected in the intestinal flora of humans.

sugarbeet_001: Glyphosate-resistant sugar beet production alters population densities of some arthropods, significantly reducing the number of bees and butterflies in beet fields.

sugarbeet_002: Glyphosate-resistant sugar beets became more susceptible to root rot when sprayed with glyphosate.

weed_resistance_001: Increased planting of glyphosate-resistant crops and application of glyphosate causes increase in glyphosate-resistant weed species.


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