Ex-post assessment of genetically modified, low level presence in Canadian flax.
Canada is the world's largest producer and exporter of flaxseed. In 2009, DNA from deregistered genetically modified (GM) CDC Triffid was detected in a shipment of Canadian flaxseed exported to Europe, causing a large decrease in the amount of flax planted in Canada and a major shift in export markets. The flax industry in Canada undertook major changes to ensure the removal of transgenic flax from the supply chain. To demonstrate compliance, Canada adopted a protocol involving testing grain samples (post-harvest) using an RT-PCR test for the construct found in CDC Triffid. Efforts to remove the presence of GM flax from the value chain included reconstituting major flax varieties from GM-free plants. The reconstituted varieties represented the majority of planting seed in 2014. This study re-evaluates GM flax presence in Canadian grain stocks for an updated dataset (2009-2015) using a previously described simulation model to estimate low-level GM presence. Additionally, losses to the Canadian economy resulting from the reduction in flax production and export opportunities, costs associated with reconstituting major flax varieties, and testing for the presence of GM flax along the flax value chain are estimated.
Department of Plant Sciences, Crop Development Centre, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK, S7N 5A8, Canada.
Helen M
HM
Booker
Department of Plant Sciences, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK, S7N 5A8, Canada.
Eric G
EG
Lamb
Department of Agricultural and Resource Economics, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK, S7N 5A8, Canada. stuart.smyth@usask.ca.
Stuart J
SJ
Smyth
D000383:Agriculture / Q000191:economics / Q000331:legislation & jurisprudence*; D002170:Canada; D005062:European Union; D005189:False Positive Reactions; D019597:Flax / Q000235:genetics*; D005821:Genetic Techniques / Q000191:economics; D030821:Plants, Genetically Modified / Q000235:genetics*
CDC Triffid; Linum usitatissimum; Reconstituted seed; Seed purity analysis; Seed testing; Testing costs