 A transplastomic "N. tabacum" plant was engineered to have spectinomycin resistance and GFP fluorescence.Whilst the nuclear transgenic plants "N. benthamiana" and "N. glauca" were engineered to have kanamycin antiobiotic resistance and YFP fluorescence.The transplastomic plant and the nuclear transgenic plants were then grafted unto each other and the grafted tissues were then analysed.