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Rutgers: GM/GMO/Biotech crop containment strategy

New Brunswick, N.J. Plant geneticists at Rutgers, The State University of New Jersey, may have solved one of the fundamental problems in genetically engineered or modified (GM or GMO) crop agriculture: genes leaking into the environment.

In a recent paper published in the Proceedings of the National Academy of Science, Rutgers Professor Pal Maliga and research associate Zora Svab advocate an alternative and more secure means of introducing genetic material into a plant. In GM crops today, novel genes are inserted into a cell nucleus but can eventually wind up in pollen grains or seeds that make their way out into the environment.

The two researchers at Rutgers Waksman Institute of Microbiology argue for implanting the genes into another component of the cell the plastid where the risk of escape is minimized. Plastids, rarely found in pollen, are small bodies inside the cell that facilitate photosynthesis, the basic life process in plants.

Our work with a tobacco plant model is breathing new life into an approach that had been dismissed out-of-hand for all the wrong reasons, said Maliga. Introducing new agriculturally useful genes through the plastid may prove the most effective means for engineering the next generation of GM crops.

Skeptics had claimed that the approach was ineffective, based on 20-year-old genetic data showing that 2 percent of the pollen carried plastids. In the new study, Svab and Maliga found plastids in pollen 100- to 1000-times less frequently. This is well below the threshold generally accepted for additional containment measures.

The agricultural community worldwide seems to be embracing GM crops because the technology has the potential to deliver more healthful and nutritious crops, and increase crop yields with less use of chemical fertilizers and pesticides.

A News Focus story in the May 25 issue of the journal Science reported that genetically modified crops are flou
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Contact: Joseph Blumberg
blumberg@ur.rutgers.edu
732-932-7084 x652
Rutgers, the State University of New Jersey
6-Jun-2007


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