01511naa a2200169 a 450000100080000000500110000800800410001910000160006024500540007626000090013052010300013965000140116965000240118365000170120770000200122477300970124410154262015-09-28       2007    bl uuuu     u00u1 u    #d1 aDUKE, S. O.  aRisks and benefits of glyphosate-resistant crops.  c2007  aOur generalizations may not apply to all situations, as risks and benefits are geography and time dependent. In the context of the replaced herbicides and agronomic practices, the apparent health and environmental benefits of the glyphosate/GRC combination are significant in most studied cases. Glyphosate is more environmentally and toxicologically benign than many herbicides that it replaces. Perhaps the most significant contribution of GRCs to the environment has been its influence on adoption of reduced- or no-tillage agriculture. The preponderance of evidence indicates that GRC-derived feed and foods are safe and are nutritionally equivalent to their non-transgenic counterparts. Little or no direct impact or risk is expected from glyphosate resistance transgenes when they introgress into wild populations. However, when stacked with genes that impart a fitness advantage in the wild, the glyphosate-resistance trait, in the presence of glyphosate use, can increase the chances of potentially harmful gene flow.  aHerbicida  aPlanta Transgênica  aResistência1 aCERDEIRA, A. L.  tISB News Report: Agricultural and Environmental Biotechnology, Blacksburg, p.1-5, Jan. 2007.