An international framework to assess the safety of genetically modified (GM) trees before they are commercialised has been called for by the UN Food and Agriculture Organisation (FAO).
It said GM activities are taking place in at least 35 countries with most research taking place in the laboratory.
Researchers hope GM trees will offer better quality and quantity and also be resistant to insects, diseases and herbicides.
But the FAO believes environmental risk assessments according to national and international protocols should be conducted before GM trees are commercialised.
There are also concerns about the lack of reliable information that makes it difficult to reach conclusions on the potential impacts of GM forests.
