MAPKKs (mitogen-activated protein kinase kinases) are the key components in the signal transduction passways which regulate a variety of cellular processes in eukaryotes including in plants. In the present study, an omanental flower Sinningia speciosa was transformed with tMEK2 and tMEK2MUT:, the wild type and mutant type of MAPKK from tomato, by Agrobacterium tumefaciens. The aim of this research is to establish a transgenic system for flower plants and investigate the functions of MAPKK in tra...