Recent Advances on Key Enzyme Genes in Metabolic Pathways Related to the Synthesis of Aroma Compounds in Tobacco

摘要

This article summarized three main kinds of metabolic pathways related to the synthesis of aroma compounds in plants,concluded the roles and expression patterns of key enzyme genes catalyzing the formation of major intermediate products in phenylpropanoid metabolic pathway,isoprene metabolic pathway and alkaloid biosynthetic pathway respectively,highlighted the latest developments of these key enzyme genes in tobacco,and accordingly proposed that in-depth study at the protein level and analysis of metabolic network interaction should be carried out in tobacco besides the expression regulation and transgenic crop improvement at the genetic level. Based on the above analysis,further improvement of tobacco aroma quality through metabolic engineering and its application prospect in agricultural production were prospected.