PPV-CR: a new strain of Plum pox virus described from sour cherry in Russia
Until 2012, seven strains of Plum pox virus (Potyvirus – EPPO A2 list) were known:
- PPV-D (Dideron)
- PPV-M (Marcus)
- PPV-C (Cherry)
- PPV-W (Winona)
- PPV-EA (El Amar)
- PPV-Rec (recombinant between PPV-D and PPV-M)
- PPV-T (Turkey)
Recent studies have showed that PPV isolates naturally infecting sour cherry trees (Prunus cerasus) in the Samara and Saratov oblasts of the Volga Basin in Russia corresponded to a new type of strain which was called PPV-CR (PPV Cherry Russia). Affected sour cherry trees showed mid-rib yellowing on the lower leaves; chlorotic or light-green patterns as well as ring spots on leaves in the middle part of the tree; and slight spotting and leaf deformation on top leaves. This new strain is not limited to the Volga basin, as later studies detected 9 isolates of PPV-CR in the Greater Moscow area.
Sources
Glasa M, Prikhodko Y, Predajňa L, Nagyová A, Shneyder Y, Zhivaeva T, Šubr Z, Cambra M, Candresse T (2013) Characterization of sour cherry isolates of Plum pox virus from the Volga Basin in Russia reveals a new cherry strain of the virus. Phytopathology 103(9), 972-979.
Prikhodko YN, Zhivaeva T, Shneyder YA, Morozova ON, Mazurin ES (2013) A new plum pox virus (PPV) strain – Cherry Russian (PPV(CR). Plant Health Research and Practice 2(4), 26-33.