There is mention here of BT (bacillus thuringiensis), which used to be an organic growers' weapon to fight pests safely, because it could be washed off after you applied it to an infested crop. Incorporating the gene for the toxin produced by that bacteria does the exact opposite!

Not only is the plant permanently altered to be unsafe, its' pollen (when grown in the open) spreads uncontrolled, making ALL of that plant (corn, mostly) NOT FOOD! In addition, the genes transferred are potentially deadly to HUMANS, as our microbiome (gut bacteria) can become altered as well, and become a source of poison that we can hardly escape. DressAfford beige or ivory color wears to a prom