b'sites or locations of a specific gene on a chromosomeinto a single molecular stack of multiple genes, that confer unique or novel modes of action simplifies prod-uct delivery, Greene says, allowing organi-zations to manage it more effectively as they bring products to the grower. The best part about multi-stacking traits? Even though weve already estab-lished that it provides multiple modes of actions in the field, when you think about it from a molecular level, theres a lot of proteins being strung together to provide the best course of action. A single trait from an insect resistance product thats coming forward today may have 2, 3, or 4 proteins that are bring-ing multiple modes of action that target a broader spectrum of a pest species,Stacked soybean traits give the option to tackle weeds, diseases and pests with multiple Greene says, noting that getting a broadermodes of action for greater success. spectrum of protection can help protect from other pests, diseases and weeds.ment gets to be quite large, then its reallyAs technology has evolved over And, though trait stacking might havehard to manage. I would say over timethe last few decades, weve just gotten limits to some degree, breeding hasntas we figure out how to drive expres- better at designing constructs, design-quite gotten there yet. sion better, were going to start target- ing expression, which allows us to deliver There will probably be upper limits toing expression in tissues that need to bestack trait concepts more effectively. some degree as you think about buildingexpressed. That will allow us to manageTheres a continuing evolution of enabling molecular stacks, he says. If the frag- the impacts on the plant more effectively.technologies that allow us to do a better 26/ SEEDWORLD.COMDECEMBER 2022'