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Dear Editor,rnHorizontal gene transfer(HGT)has long been recognized as asexual means of DNA transfer between different species.Although HGT is common to prokaryotes,it remains un-common in higher eukaryotic species(Beiko et al.,2005).Since parasitic plant formed natural grafts with host plant,HGTs between parasitic and host plants were believed more likely to occur and therefore extensively examined(Yang et al.,2016).