PRGL was isolated as a novel gene in flower development in Gerbera in our lab.It is presumed to be correlated with GA induced cell elongation and may be localizedin cell wall according to the analysis of its gene structure. Recently, techniques ofgene over-expression and knock-down in the research of gene function have becomeincreasingly important. By previous study in our lab, Zhang Miaobin established ashoot-regeneration system mediated by Agrobacterium tumefaciens. In the presentstudy, further...