title: New features in the genus Ilarvirus revealed by the nucleotide sequence of Fragaria chiloensis latent virus.
abstract: Fragaria chiloensis latent virus (FClLV), a member of the genus Ilarvirus was first identified in the early 1990s. Double-stranded RNA was extracted from FClLV infected plants and cloned. The complete nucleotide sequence of the virus has been elucidated. RNA 1 encodes a protein with methyltransferase and helicase enzymatic motifs while RNA 2 encodes the viral RNA dependent RNA polymerase and an ORF, that shares no homology with other Ilarvirus genes. RNA 3 codes for movement and coat proteins and an additional ORF, making FClLV possibly the first Ilarvirus encoding a third protein in RNA 3. Phylogenetic analysis reveals that FClLV is most closely related to Prune dwarf virus, the type member of subgroup 4 of the Ilarvirus genus. FClLV is also closely related to Alfalfa mosaic virus (AlMV), a virus that shares many properties with Ilarviruses . We propose the reclassification of AlMV as a member of the Ilarvirus genus instead of being a member of a distinct genus.
authors.affiliation: Department of Botany and Plant Pathology, Center for Gene Research and Biotechnology, Oregon State University, Corvallis, OR 97331, USA.
authors.forename: Ioannis E
authors.initials: IE
authors.lastname: Tzanetakis
authors.forename: Robert R
authors.initials: RR
authors.lastname: Martin
mesh_terms: D001483:Base Sequence; D003001:Cloning, Molecular; D031985:Fragaria / Q000382:microbiology*; D019179:Ilarvirus / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification; D008969:Molecular Sequence Data; D010802:Phylogeny; D010935:Plant Diseases / Q000821:virology*; D017422:Sequence Analysis, DNA