Section outline
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FraxGCRV1 and FraGCRV2 are single stranded, unsegmented RNA viruses with a negative orientation, and are recently identified as two closely related members of the proposed novel genus Gammacytorhabdovirus, family Rhabdoviridae (Bejerman et al. 2023). The phylogenetic analyses of open reading frames of viral RNA-polymerase, glycoprotein, and nucleoprotein confirm that the virus is a member of the genus Cytorhabdovirus. Studies on morphology of the virus need to be carried out, although it is likely that the novel gammacytorhaddoviruses affecting ash trees form bacilliform particles (60-75 nm) in the cytoplasm of infected mesophyll cells. The viruses have only recently been identified, therefore many studies are still lacking also on transmission and epidemiology.