Transient expression system is a new way to conveniently and efficiently studying promoter activity,gene function and producing recombination protein in Dioscorea opposite.An Agrobacterium-mediated transient expression method with GUS and GFP as reporter was established in D.opposita.We analyzed the expression of GUS and GFP in different culture time after leaf infiltration and studied the dynamic of transient expression.The result showed that the initial expression of GUS and GFP could be obtained after th...