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2007-05-15 | permalink
How much Bt toxin do genetically engineered MON810 maize plants actually produce?
In the growing season 2006, Greenpeace took leaf samples of commercially cultivated MON810 maize plants in Germany and Spain to determine the Bt toxin (Cry1Ab) concentration. A total of 619 samples from 12 fields were analysed using ELISA tests. [...] This Greenpeace study shows a surprising pattern of plants that contained only very low Bt toxin levels. However, high levels could be observed in some plants. The variation found on the same field on the same day was considerable, and could differ by a factor of as much as 100. This is in agreement with the results of a new study published in April 2007 that concludes that ”the monitoring of Cry1Ab expression [of MON810 plants] showed that the Cry1Ab concentrations varied strongly between different plant individuals.”
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2007-05-15 | permalink
How much Bt toxin do genetically engineered MON810 maize plants actually produce?
In the growing season 2006, Greenpeace took leaf samples of commercially cultivated MON810 maize plants in Germany and Spain to determine the Bt toxin (Cry1Ab) concentration. A total of 619 samples from 12 fields were analysed using ELISA tests. [...] This Greenpeace study shows a surprising pattern of plants that contained only very low Bt toxin levels. However, high levels could be observed in some plants. The variation found on the same field on the same day was considerable, and could differ by a factor of as much as 100. This is in agreement with the results of a new study published in April 2007 that concludes that ”the monitoring of Cry1Ab expression [of MON810 plants] showed that the Cry1Ab concentrations varied strongly between different plant individuals.”
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