Horizontal gene transfer(HGT) is the transfer of genetic material between non-mating species. HGT plays an important role in evolution of bacterial and unicellular eukaryotes. However, the frequency and impact on the evolution of HGT among multicellular eukaryotes remains unclear. Recent studies indicate that several HGT events occured between plants and even between plants and other organisms. This review focuses on some HGT events that were found in plants, to try to explain the potential mechanisms and t...