Genetic Information Exchange and Variation Mechanism of Grafted Plants

Grafting has been widely used in crop production for keeping varieties features, dwarfing plants and improving the yield and quality. Rootstock can improve the vigor of scion and increase the ability of resistance to pathogens. Genetic material exchanged by plant grafting is an objective phenomenon in nature. Horizontal gene transfer (HGT) between scion and rootstock, RNA long-distance transportation, epigenetic regulation and rootstock-scion-environment interaction has been widely studied. We reviewed the research progress in genetic information exchange and molecular mechanism of induced variation by grafting. This paper will provide better guidance for the application of grafting but also provide a theoretical basis for revealing the mechanism of interaction between plant cells.