Large, persistent populations of genetically engineered canola 1 have been found outside of cultivation in North Dakota. As genetically engineered crops become increasingly prevalent in the United States, concerns remain about potential ecological side effects.
A study published today by the online journal PLoS ONE reports that genetically engineered canola endowed with herbicide resistance have been found growing outside of established cultivation regions along roadsides across North Dakota. These "escaped" plants were found state-wide and accounted for 45% of the total roadside plants sampled.
Furthermore, populations were found to persist from year to year and reach thousands of individuals. The authors also found that the escaped plants could hybridize with each other to create novel combinations of transgenic traits.
The authors argue that their result, more than 10 years after the initial release of genetically engineered canola, "raises questions of whether adequate oversight and monitoring protocols are in place in the U.S. to track the environmental impact of biotech products." However, they also note that biotechnology can provide important tools to feed the rapidly growing population. "We must safely engage all tools available to us to advance food, fuel and fiber alternatives as modern agriculture rises to the challenges of the next decade," they conclude.
"More than half of the earth's terrestrial landscape is managed in cultivated crops or forage species," says lead researcher Cynthia Sagers, "yet we have little understanding of how domesticated plants influence their wild relatives. This study is a first step in addressing these questions by documenting that domesticated species have a life outside of cultivated fields."
Citation: Schafer MG, Ross AA, Londo JP, Burdick CA, Lee EH, et al. (2011) The Establishment of Genetically Engineered Canola Populations in the U.S.. PLoS ONE 6(10): e25736. doi:10.1371/journal.pone.0025736
Financial Disclosure: Provided by: USDA CREES NRI 35615-19216, ''Ecological Impacts from the Interactions of Climate Change, Land-Use Change and Invasive Species.'' The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
Competing Interest Statement: The authors have declared that no competing interests exist.
Disclaimer: This press release refers to upcoming articles in PLoS ONE. The releases have been provided by the article authors and/or journal staff. Any opinions expressed in these are the personal views of the contributors, and do not necessarily represent the views or policies of PLoS. PLoS expressly disclaims any and all warranties and liability in connection with the information found in the release and article and your use of such information.
About PLoS ONE: PLoS ONE is the first journal of primary research from all areas of science to employ a combination of peer review and post-publication rating and commenting, to maximize the impact of every report it publishes. PLoS ONE is published by the Public Library of Science (PLoS), the open-access publisher whose goal is to make the world's scientific and medical literature a public resource.
All works published in PLoS ONE are Open Access. Everything is immediately available -- to read, download, redistribute, include in databases and otherwise use -- without cost to anyone, anywhere, subject only to the condition that the original authors and source are properly attributed. For more information about PLoS ONE relevant to journalists, bloggers and press officers, including details of our press release process and our embargo policy, see the everyONE blog at http://www.