The suitability of DAS-ELISA and RT-PCR methods for detection of 15 cucum¬ber mosaic virus (CMV) isolates found in Poland was compared. The effectiveness of DAS-ELISA depended on polyclonal antibodies (PAb) used in the assay. Antibodies Wic and DTL detected all tested isolates, whereas antibodies M could not detect iso¬late P26, antibodies ToRS did not react with isolate Porz, and isolate Simp2 was not detected by antibodies Cas. The RT-PCR technique allowed detection of all virus isolates. Three nucleic acid extraction methods: immunocapture (IC), silicacapture (SC) and isolation of the total RNA with the commercial kit (RN), proved to be effec-tive. These three nucleic acid extraction methods all allowed CMV amplification by RT-PCR. Three methods were used to identify and group the CMV isolates: 1) ELISA with group-specific monoclonal antibodies (MAbs), 2) phylogenetic analy¬sis of coat protein gene sequence and 3) restriction analysis of PCR-amplified RNA2 and RNA3 fragments digested with EcoRI, HpaII and MluI enzymes. MAbs used in ELISA allowed the preliminary classification of isolates to group I or II, but they failed to recognize one isolate (P26). CMV grouping based on CP sequence analysis enabled us to identify all of the tested isolates and discriminate between the two groups of CMV - IA and II. Classification based on RT-PCR-RFLP analysis corre¬lated with phylogenetic grouping based on sequencing.
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.