title: A proposal to help resolve the disagreement between naming of potato virus Y strain groups defined by resistance phenotypes and those defined by sequencing.
abstract: The complete coat protein (CP) nucleotide sequences of nine historical (1943-1984) potato virus Y (PVY) isolates belonging to resistance strain groupings Y(C), Y(Z) or Y(O), and nine new Australian isolates from potato and tomato were compared with those of 85 others. New potato isolate BL was in resistance group Y(O). On phylogenetic analysis, the historical potato isolates fitted within phylogenetic groups C1 or C2 (Y(C)), 'Y(O)' (Y(Z), Y(O)) or N-Wi (Y(Z)), while the new isolates were in phylogenetic groups C1 (tomato) or 'Y(O)' (potato, tomato). Substitution of the designation (Y(Q)) for the current phylogenetic 'Y(O)' grouping is proposed for consideration.
authors.affiliation: School of Plant Biology, University of Western Australia, Crawley, Perth, Australia.
authors.forename: Monica A
authors.initials: MA
authors.lastname: Kehoe
authors.forename: Roger A C
authors.initials: RA
authors.lastname: Jones
mesh_terms: D001315:Australia; D001483:Base Sequence; D017931:DNA Primers / Q000235:genetics; D014644:Genetic Variation; D008969:Molecular Sequence Data; D010641:Phenotype; D010802:Phylogeny; D010935:Plant Diseases / Q000821:virology*; D017800:Potyvirus / Q000145:classification / Q000235:genetics* / Q000302:isolation & purification / Q000472:pathogenicity*; D012367:RNA, Viral / Q000235:genetics; D011995:Recombination, Genetic; D011198:Solanum tuberosum / Q000821:virology*; D013045:Species Specificity; D009626:Terminology as Topic; D014774:Virulence / Q000235:genetics
chemical_list: D017931:DNA Primers; D012367:RNA, Viral