Red clover-associated luteovirus - a newly classifiable member of the genus Luteovirus with an enamo-like P5 protein.

This study reports the complete genomic sequence of a novel virus isolated from red clover. According to its genomic organization, its similarity to luteoviruses, and a greater than 10% difference in all genes, this virus isolate likely represents a new luteovirus species. As seen in nectarine stem pitting-associated virus (NSPaV) and NSPaV-South Korea (SK) luteoviruses, it differs from typical luteoviruses through the absence of ORF3a and ORF4 encoding movement proteins. Furthermore, its P5 protein (responsible for aphid transmission) is more similar to the P5 of enamoviruses than that of luteoviruses. The virus isolate has been named red clover-associated luteovirus (RCaV).