Genetic variability in the coat protein gene of Potato virus X and the current relationship between phylogenetic placement and resistance groupings |
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| Authors: | Belinda A Cox Roger A C Jones |
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| Institution: | (1) Western Australian State Agricultural Biotechnology Centre, Murdoch University, Perth, WA, 6150, Australia;(2) Department of Agriculture and Food, Bentley Delivery Centre, Locked Bag No. 4, Perth, WA, 6983, Australia; |
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| 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. |
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