In this study, our results proved that the cpp-penetrating peptide(CPP) Tat2 had the ability to penetrate the pollen wall and carry the cargoes including DNA(circular and linear plasmid) and GUS enzyme into the microspores of Chinese cabbage ‘94-323'. The influence factors of internalization efficiency were also researched. The results showed that internalization efficiency of CPP into Chinese cabbage microspores had positive relationship with incubation time of Tat2/DNA and microspores. Meanwhile, the inte...