WHO, jointly with FAO, will convene a series of expert consultations to assess the safety and nutritional aspects of foods derived from genetically modified plants, microorganisms, and animals.

But the same as nuclear transformation, plastid transformation also has the problems of bio-safety of antibiotic markers and development obstacles due to the overexpression of foreign gene.

With the progress on biotechnology, kind and quantity of genetically modified foods (GMF) have been increasing. People pay most attention to the debate on GMFs' safety.