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Genomic variation in pepper vein yellows viruses in Australia, including a new putative variant, PeVYV-10

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Filardo, F. F., Nurulita, S., Jones, L., Gambley, C., Bond, S., Sharman, M. and Campbell, P. R. (2024) Genomic variation in pepper vein yellows viruses in Australia, including a new putative variant, PeVYV-10. Archives of Virology, 169 (1). p. 18. ISSN 1432-8798

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Article Link: https://doi.org/10.1007/s00705-023-05943-y

Abstract

Since the first identification and full sequence of the polerovirus pepper vein yellows virus in Australia in 2016, virus surveys of crops and weeds have sporadically identified PeVYV in different hosts and locations. Genomic comparisons of 14 PeVYV-like isolates using RT-PCR products spanning the 3’ end of the RdRp region (ORF 2), the intergenic region, ORF 3a, ORF 4, and ORF 3 (1388 nt) showed that four of the PeVYV isolates might be a new variant or PeVYV-like virus. From six PeVYV-positive plants, eight PeVYV-like sequences were obtained by high-throughput sequencing, as two hosts, 5352 and 5634, contained two slightly different PeVYV-like isolates. Three of the PeVYV-like isolates were most closely related to PeVYV-6 and PeVYV-5, and two isolates were closely related to PeVYV-9 and PeVYV-2. The other three isolates shared only 69-74% nucleotide sequence identity across the whole genome with any of the other PeVYVs, despite sharing 73-98%, 87-91%, and 84-87% amino acid sequence identity in ORF 3a, ORF 3, and the RdRp (ORF 2), respectively, suggesting that this virus is a new PeVYV-like virus, which we have tentatively called PeVYV-10. This is also the first report of a PeVYV-like virus infecting garlic.

Item Type:Article
Corporate Creators:Department of Agriculture and Fisheries, Queensland
Business groups:Crop and Food Science
Subjects:Science > Botany > Genetics
Plant culture > Vegetables
Plant pests and diseases > Plant pathology
Live Archive:07 Mar 2024 05:00
Last Modified:07 Mar 2024 05:00

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