DIOSCOREA JAPONICA MOSAIC VIRUS AND DIOSCOREA PLANT INFECTED WITH DIOSCOREA JAPONICA MOSAIC VIRUS

摘要

PROBLEM TO BE SOLVED: To provide: a novel attenuated Dioscorea japonica mosaic virus which has interference activity to highly virulent Dioscorea japonica mosaic virus when infecting a Dioscorea plant; and a Dioscorea plant infected with the attenuated Dioscorea japonica mosaic virus.SOLUTION: The invention provides: an attenuated Dioscorea japonica mosaic virus according to (a) an attenuated Dioscorea japonica mosaic virus having RNA composed of a specific base sequence, or (b) an attenuated Dioscorea japonica mosaic virus which has RNA composed of a base sequence having homology of at least 93% or more to the specific base sequence and interference activity to a highly virulent Dioscorea japonica mosaic virus; and a Dioscorea plant or bulbil which is infected with the attenuated Dioscorea japonica mosaic virus.