Escape and hybridization of a genetically modified invasive plant

Back in 2002 Scotts Company planted Roundup resistant Agrostis stolonifera (creeping bentgrass) in a trial field in Oregon.  The genes moved in pollen carried by the wind to wild Agrostis stolonifera and A. gigantea plants up to 21 km away.  Scotts failed to kill all the transgenic plants found outside the field boundaries and populations of transgenic plants were found in 2006. Now scientists have found a wild creeping bentgrass plant hybridized with pollen contribution from a grass in another genera, Polypogon monspeliensis, to create a transgenic hybrid grass.  A decision about deregulating transgenic Agrostis stolonifera is still pending.  Let’s hope this new data gets taken into consideration!

 

Snow, A. A. 2012. Illegal gene flow from transgenic creeping bentgrass: the saga continues. Molecular Ecology, 21: 4663–4664. doi: 10.1111/j.1365-294X.2012

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Posted in Agrostis gigantea, Agrostis stolonifera, Herbicides, Research | Comments Off on Escape and hybridization of a genetically modified invasive plant

Herbicide resistant creeping bentgrass

Another study on the potential effects of escaped transgenic creeping bentgrass, Agrostis stolonifera, is out.  This study shows that in Central Oregon wetland communities are at particular risk of invasion by creeping bentgrass and by redtop, Agrostis gigantea. Redtop can cross-pollinate with creeping bentgrass potentially picking up the glyphosate herbicide resistance gene.   Currently control of these invasive grasses principally relies on herbicides containing glyphosate.

Bollman, M. A. et al. 2012. Wetland and riparian plant communities at risk of invasion by transgenic herbicide-resistant Agrostis spp. in central Oregon.  Plant Ecology 213(3):355-370.

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Posted in Agrostis gigantea, Agrostis stolonifera, Pacific Northwest | Tagged , , , | Comments Off on Herbicide resistant creeping bentgrass