A 2014 study by the Arctic University of Norway conducted in Iowa found high levels of Roundup on 70percentt of genetically engineered soy plants.
Real-time PCR was able to detect quantifiable levels of Roundup Ready® soybean that ranged from 0.03 to 87% in common grocery store food items that contain soy-based products [ 28].
In fish, short-term exposures to high concentrations (1 20 mg/L) of Roundup altered levels of cellular antioxidants and induced oxidative damage of DNA, lipids and proteins (e.g. [ 12- 14]), while environmentally relevant concentrations of Roundup, glyphosate and POEA caused DNA damage in blood and liver cells of exposed eel and catfish [ 15- 17].
Upon the introduction of herbicide tolerant genetically modified organisms (GMOs), designed to tolerate Roundup and to accumulate unusual levels of its residues, Roundup quickly became the major pesticide in the world and a major food or feed contaminant [ 10].
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[Updated, Nov. 28, 8 45 p.m. | The Seralini study has been retracted. Read the letter from the journal editor.] An intensively promoted and controversial French study claiming to find high tumor rates and early mortality in rats fed genetically modified corn and "safe" levels of the herbicide Roundup has been dismissed in a rare joint statement from France's six scientific academies.
In a landscape-level of study for 'Roundup Ready' creeping bentgrass, it was found that most of the gene flow occurred within 2 km in the direction of prevailing winds.
This may suggest a dominance of pro-survival stress response mechanisms at lower treatment concentrations of Roundup, which is likely to generate lower levels of oxidative stress.
There was much criticism that glyphosate concentrations and levels of its consumption were not given by the researchers and that only a whole formulation of Roundup was described and used.
Genetically modified crops and overuse of Roundup?
