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Diagnostic tests uncovered BNYVV infection in beetroot, suggesting a need for monitoring in agriculture.
In 2024, diagnostic tests were performed on beetroot plants showing symptoms of leaf discoloration, necrosis, and root deformation. The plants came from the łódzkie voivodeship. The DAS-ELISA tests revealed the presence of potyvirus betaceum (BtMV) and benyvirus necrobetae (BNYVV) in the tested plants. Moreover, the TAS-ELISA test confirmed infection with polerovirus BWYV (BWYV). Two beetroot samples were selected for the next molecular analysis. BNYVV-specific primers were used in the RT-PCR reaction. The obtained nucleotide (nt) sequence of the studied BNYVV-K isolate was compared to analogous sequence fragments from other virus isolates deposited in the GenBank database using the MUSCLE tool in the MEGAX program. The obtained results showed identity of the BNYVV-K nt sequence ranging from 92.5 to 99.6%. Analogous comparisons of the generated amino acid sequence of fragment of coat protein showed identity ranging from 93.8 to 99.4%. This is the first report of natural BNYVV infection in beetroot in Poland.
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