title: Genetic variability in the coat protein gene of Potato virus X and the current relationship between phylogenetic placement and resistance groupings.
abstract: The complete coat protein nucleotide sequences of 11 Potato virus X isolates from Australia and two from Britain were compared to those of 72 others. On phylogenetic analysis, clade I contained all 11 Australian sequences, and sub-clade II-1 contained the two new British sequences. Clade I isolates were from six different continents, but those in sub-clades II-1 and II-2 were only from Europe and the Americas, respectively. Clade I contained isolates in strain groups 1, 3 and 4, and sub-clades II-1 and II-2, isolates in strain groups 2 and 4. Thus, strain group 4 now occurs within both clades.
authors.affiliation: Western Australian State Agricultural Biotechnology Centre, Murdoch University, Perth, WA 6150, Australia.
authors.forename: Belinda A
authors.initials: BA
authors.lastname: Cox
authors.forename: Roger A C
authors.initials: RA
authors.lastname: Jones
mesh_terms: D001315:Australia; D036022:Capsid Proteins / Q000235:genetics*; D014644:Genetic Variation; D010802:Phylogeny; D017863:Potexvirus / Q000145:classification / Q000235:genetics / Q000302:isolation & purification; D017422:Sequence Analysis, DNA; D011198:Solanum tuberosum / Q000821:virology; D006113:United Kingdom
chemical_list: D036022:Capsid Proteins