Construction of Interference Vector of EsSox21b-like Gene from Chinese Mitten Crab(Eriocheir sinensis)and Preparation of dsRNA by Prokaryotic Expression Identification of the pathogenic virus on Ailanthus altissima Overexpression of potato miR482e enhanced plant sensitivity to Verticillium dahliae infection Transformation of PRSV-CP dsRNA Gene into Papaya by Pollen-tube Pathway Technique Studies of Bacterially Expressed dsRNAs Targeting PRSV HC-Pro Gene Inducing Resistance to PRSV Hypovirulence Strains and Its Transmissible dsRNA of Cryphonectria parasitica RT-PCR Detection of dsRNA Virus LeV in Lentinula edodes