Take the nematode resistance gene, for example. Nematodes only infect rice plants via their roots, so the gene need only be expressed in the roots, not in the seeds. This is important, since consumers who are concerned about genetically modified crops need not worry that the grains of rice they eat contain transgenic protein.
例如「抗線蟲基因」，由於線蟲是由水稻根部感染，因此讓該基因只要在根部表現，不在種子表現，如此一來，對轉殖基因有疑慮的消費者，就不會在米粒中將轉殖基因的蛋白質吃下肚。