Abstract
A novel plant virus with a double-stranded (ds) RNA genome was detected in Lilium spp. in China by high-throughput sequencing and tentatively named “lily amalgavirus 2” (LAV2). The genomic RNA of LAV2 is 3432 nucleotides (nt) in length and contains two open reading frames (ORFs) that putatively encode a ‘1 + 2’ fusion protein of 1053 amino acids (aa), generated by a ‘+1’ programmed ribosomal frameshift (PRF). ORF1 encodes a putative 386-aa protein of unknown function, and ORF2 overlaps ORF1 by 350 nt and encodes a putative 783-aa protein with conserved RNA-dependent RNA polymerase (RdRp) motifs. The ‘+1’ ribosomal frameshifting motif, UUU_CGN, which is highly conserved among amalgaviruses, is also found in LAV2. Sequence analysis showed that the complete genome shared 46.04%-51.59% nucleotide sequence identity with those of members of the genus Amalgavirus and had the most similarity (51.59% sequence identity) to lily amalgavirus 1 (accession no. OM782323). Phylogenetic analysis based on RdRp amino acid sequences showed that LAV2 clustered with members of the genus Amalgavirus. Overall, our data suggest that LAV2 is a new member of the genus Amalgavirus.
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18 July 2023
A Correction to this paper has been published: https://doi.org/10.1007/s00705-023-05826-2
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Acknowledgements
This study was supported by the National Key Research and Development Program of China (2019YFD1001800).
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Z.H. Yuan and L. Cai designed the experiments and wrote the manuscript. Z.F. Li and Y.X. Lu contributed to sample preparation. M.J. Cao contributed to data analysis. H. Ni, G.P. Wang, and L. Cai contributed to critical revision of the manuscript. All authors read and approved the final manuscript.
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Yuan, Z., Li, Z., Lu, Y. et al. Molecular characterization of a novel amalgavirus infecting lilium spp. in China. Arch Virol 168, 181 (2023). https://doi.org/10.1007/s00705-023-05806-6
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DOI: https://doi.org/10.1007/s00705-023-05806-6