April 11, 2015

Yet Another Study Proves GMOs Are Not “Substantially Equivalent” Even Among Themselves, Let Alone To Non-GM Crops


A new study compared two varieties of Monsanto’s MON810 insecticidal maize under optimal conditions and under two kinds of environmental stress: Cold and wet conditions, and hot and dry. According to the pro-GM activists, in the case of both varieties: 1. The transgene should be equally active. 2. It should express equal levels of the Bt toxin (Cry1AB, vs. corn borers and other lepidopteran larvae). 3. There should be a clear, constant ratio of transgene activity to Bt expression. 4. Environmental stresses should have no effect on 1-3. 5. If there is any effect, it should be the same in both varieties.
The results were quite different:
1. Under optimal conditions, transgenic action (gauged by the RT-PCR test) was similar, but the average Bt content (tested by ELISA) was higher in one variety than the other.
2. Under cold/wet conditions, the Bt content increased in one variety but not the other.
3. Hot/dry conditions, transgenic expression was significantly lower in one variety, but this did not affect Bt content.
The researchers concluded that even though transgene expression was similar under “normal” conditions, Bt content is affected also by the genetics of the original maize variety, and will therefore vary chaotically from variety to variety (a given transgene will be bred into often dozens of varieties). Under stress conditions the Bt content is highly unpredictable. Inconsistent Bt expression will help the target insects develop resistance, another refutation of the scam “refuge” policy.
Based on these results, the crop science group Testbiotech is calling for all authorizations of Bt GMOs to be suspended while a new safety review protocol is drawn up and put into effect, as this study demonstrates how chaotic the real-world transgenic behavior and Bt production of these GMOs is. Researcher Angelika Hilbeck noted that this study, along with several previous studies which also found chaotic variation in Bt expression, refute the entire paradigm of “safety assessment” as deployed by regulators, as this assumes consistent levels of the poison in the product. It also refutes advertising which promises a given level of “active ingredient” in the product. Buying the seeds of a poison plant is, after all, the same thing as buying a gallon of chemical pesticide.
As is standard with regulators all over the world including in the US, the EU’s EFSA assessments do almost nothing to assess the real-world performance of GMOs. (Much like how only ivory tower glyphosate is subjected to only meager testing, while real-world Roundup is subjected to none, and the bogus testing of Roundup Ready GMOs doesn’t include spraying them with Roundup!) No one has the slightest idea what the real world effects of changing environmental conditions will be on GMO performance, and the subsequent effects on human and animal health, beneficial insects, and soil ecosystems.



1 Comment

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    Comment by large display digital clock — June 25, 2015 @ 10:56 am

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