December 6, 2009

transgenic dna persists in the food web.: Guelph research

This is some more evidence for what others (and here) have been saying for quite some time: gmo dna sequences transfer to other organisms.
In the case of this study, Monsanto's cp4 epsps genes moved on through the soil ecosystem to arthropods, nematodes, and earthworms. I wonder if they are round-up ready (the soil life) and if monsanto owns them now.

Detection of transgenic cp4 epsps genes in the soil food web .
Miranda M. Hart1, Jeff R. Powell1, Robert H. Gulden2, David J.
Levy-Booth3, Kari E. Dunfield4, K. Peter Pauls2, Clarence J. Swanton2,
John N. Klironomos1 and Jack T. Trevors.
University of Guelph

Abstract - The persistence and movement of transgenic DNA in
agricultural and natural systems is largely unknown. This movement poses
a threat of horizontal gene transfer and possible proliferation of
genetically modified DNA into the general environment. To assess the
persistence of transgenic DNA in a field of Roundup Ready
corn, we quantified the presence of the transgene for glyphosate
tolerance within a soil food web. Using quantitative real-time PCR, we
identified the cp4 epsps transgene in bulk soil microarthropods,
nematodes, macroarthropods and earthworms sampled within the corn
cropping system. We found evidence of the transgene at all dates and in
all animal groups. Transgenic DNA concentration in animal was
significantly higher than that of background soil, suggesting the
animals were feeding directly on transgenic plant material. It remains
to be tested whether this DNA was still within the plant residues,
present as free, extracellular DNA or had already undergone genetic
transformation into competent bacterial cells. These results are the
first to demonstrate the persistence of transgenic crop DNA residues
within a food web.


1 comment:

Carol said...

Great post ... I had not known this but sure expected any manipulation to then migrate into other realms ... creating who knows what. I think Monsanto owns whatever ill comes from all this. It just sickens me how they have been free to take hold of and change our natural world and then to think they own it!