摘要
1 INTRODUCTIONThe production of secondary metabolites using plant cells has been the subject of much inter-est in recent years.Despite that tremendous research efforts had been made in this topic,notmany products have reached the commercial stage.It is generally acknowledged that the mainproblem in this field is the lack of basic knowledge of the biosynthetic routes,and the mechanisms found to bring about the production of such secondary metabolites.There are,however,some techniques that have beneficial effects on the production and ex-
