看看世界卫生组织的定义：
Genetically modified organisms (GMOs) can be defined as organisms in which the genetic material (DNA) has been altered in a way that does not occur naturally.
http://www.who.int/foodsafety/publications/biotech/20questions/en/

植物杂交到处都是，可自然中不会直接把某个细菌的一部分基因插入植物里。