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.