Evidence for multiple intraspecific recombinants in natural populations of Watermelon mosaic virus (WMV, Potyvirus).
The full-length sequences of 13 isolates of Watermelon mosaic virus (WMV, genus Potyvirus) belonging to the three main molecular groups defined at the capsid level were obtained and compared to 4 sequences available in databases. Many isolates presented evidence for intraspecific recombination, particularly between molecular groups 1 and 2. Most isolates had different recombination breakpoints suggestive of multiple independent recombination events. The breakpoints were for the most part located between the C-terminal half of the HC-Pro coding region and the N-terminal part of the CI coding region. There was no evidence for positive selection in the WMV genome.
Desbiez
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INRA, Unité de Pathologie Végétale UR407, 84140 Montfavet, France. Cecile.Desbiez@avignon.inra.fr
Lecoq
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H
D008969:Molecular Sequence Data; D010802:Phylogeny; D010935:Plant Diseases / Q000821:virology*; D010944:Plants / Q000821:virology*; D017800:Potyvirus / Q000145:classification / Q000235:genetics* / Q000302:isolation & purification; D011995:Recombination, Genetic