Since the idea of producing transgenic plants by Agrobacterium-mediated transformation in 1970s, many crops and horticulture plants had been successfully transformed by Agrobacterium, large scale of which were being widely grown now. Moreover, more and more scientists take attention to Agrobacterium because of its higher transformation efficiency and few successes of other methods such as particle bombard and so on. However, there are still some problems in the stability and prodictibility of gene expression transformed by Agrobacterium. So in recent years, many national rearches focus on the ...