Genetic diversity, host range and transmissibility of CR isolates of Plum pox virus
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The new strain of Plum pox virus (PPV), CR, was recently discovered on sour cherry (Prunus cerasus) in geographically distant Saratov/Samara and Moscow regions of European Russia. The full genomes of five Moscow PPV-CR isolates were sequenced using the 454 platform. In a phylogenetic analysis, isolates of the two geographic groups clustered separately within the CR branch. PPV-CR was transmitted to non-cherry hosts by in vitro grafting and induced systemic, generally symptomless infection in P. cerasifera and P. domestica. Seeds and black cherry aphid Myzus cerasi did not transmit the Moscow PPV-CR isolates.
KeywordsPlum pox virus Strain CR Sour cherry Transmission Host range
The authors thanks Dr. Y. Prikhodko (All-Russian Plant Quarantine Center) for the PPV-CR isolate RU-63sc.
The study was funded by the Russian Science Foundation, grant no. 14-24-00007. The next-generation sequencing of full-size genomes was financially supported by the Russian Foundation for Basic Research, Grant no. 14-04-01786. MG was supported by grant VEGA2/0036/16 from the Scientific Grant Agency of the Ministry of Education and Slovak Academy of Sciences.
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Conflict of interest
The authors declare that they have no conflict of interest.
Human and animal rights
This article does not contain any studies with human participants or animals performed by the authors.
All authors read and approved the final manuscript.
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