Molecular variability of Czech plum pox virus isolates

Area of Science:

• Plant virology
• Molecular biology
• Agricultural science

Background:

• Plum pox virus (PPV) is a significant pathogen affecting Prunus species.
• Accurate identification and characterization of PPV isolates are crucial for disease management.
• Previous studies have utilized various molecular and serological methods for PPV detection.

Purpose of the Study:

• To characterize seventy-two PPV isolates from the Czech Republic.
• To compare the efficacy of DAS-ELISA and RT-PCR-RFLP methods for PPV serotyping.
• To identify the prevalent PPV serotypes in the Czech Republic.

Main Methods:

• Double-Antibody Sandwich Enzyme-Linked Immunosorbent Assay (DAS-ELISA) for serological detection.
• Reverse Transcription-Polymerase Chain Reaction (RT-PCR) to amplify the coat protein (CP) gene fragment.
• RsaI Restriction Fragment Length Polymorphism (RFLP) analysis of the amplified CP gene.
• Analysis of coat protein mobility.

Main Results:

• Both PPV-D and PPV-M serotypes were identified among the analyzed isolates.
• DAS-ELISA and RT-PCR-RFLP results were largely consistent.
• A few discrepancies were observed, potentially indicating viral mutation or recombination events.

Conclusions:

• The study confirms the presence of both PPV-D and PPV-M serotypes in the Czech Republic.
• DAS-ELISA and RT-PCR-RFLP are reliable methods for PPV isolate characterization.
• Observed variations highlight the importance of ongoing molecular surveillance for PPV strains.