In this article, the discovery of the use of a gene from weeds as an antibacterial selection marker is discussed, as well as the impact of this discovery on the debate over the safety of genetically modified foods. (2009: Internet)
In the process of genetic engineering, not only must a gene be transferred into a plant cell, but the plant cells which take up the new gene must be found. This is achieved through the use of an antibiotic resistance marker. The plant cells that take up the gene are not harmed by the antibiotic, which means that only the successfully transformed cells will survive after being treated with the antibiotic.
Previously, scientists used the conventional marker genes from the E Coli bacteria. However, this antibiotic resistance marker gene passes on to the plants resistance to antibiotics used in medicine. Scientists worry that genes from the genetically modified plants could be passed on to the bacteria living in the human gut, creating “superbugs” resistance to antibiotics. Using a plant based marker then makes it improbable that horizontal gene transfer would occur, and thus cause antibiotic resistant bacteria. Thus, the plant based marker is far more safe than using a bacterial antibiotic resistance marker.
Article:
http://www.gate2biotech.com/new-palnt-marker-gene-seen-altering-biotech
More Information on Anitbiotic Resistant Gene Markers:
http://www.gmo-safety.eu/en/gene_transfer/44.docu.html
Student no: 42057974
