Identification and characterization of a novel carlavirus isolated from viburnum (Viburnum opulus) in Aotearoa New Zealand
- 01.12.2025
- Original Article
- Verfasst von
- Joe Tang
- Lia Liefting
- Stella Veerakone
- Jeremy R. Thompson
- Erschienen in
- Archives of Virology | Ausgabe 12/2025
Abstract
The genus Viburnum includes more than 150 species of ornamental shrubs and trees that are cultivated worldwide. In Aotearoa New Zealand (NZ), V. opulus is the most popular of the species widely used in landscaping. To date, alfalfa mosaic virus (AMV) has been the only virus reported in viburnum in NZ. Here, we report the identification and molecular characterization of a novel carlavirus, tentatively named "viburnum carlavirus 1" (VibCV1), from a V. opulus plant coinfected with AMV. The virus was characterized using high-throughput sequencing, transmission electron microscopy, and herbaceous indexing. The complete genome of VibCV1 is 8,444 nucleotides in length and contains six open reading frames, with an organization typical of members of the genus Carlavirus. Phylogenetic analysis revealed that VibCV1 is most closely related to helleborus mosaic virus (HeMV), sharing 80.24% and 85.48% amino acid sequence identity in the replicase and coat protein, respectively. These values lie on the borderline of the current species demarcation criteria for the family Betaflexiviridae. Considering its distinct natural host range, limited distribution, and phylogenetic divergence from HeMV, we suggest that VibCV1 possibly represents a new species within the genus Carlavirus. The low incidence of VibCV1 in NZ viburnum populations is also discussed.
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- Titel
- Identification and characterization of a novel carlavirus isolated from viburnum (Viburnum opulus) in Aotearoa New Zealand
- Verfasst von
-
Joe Tang
Lia Liefting
Stella Veerakone
Jeremy R. Thompson
- Publikationsdatum
- 01.12.2025
- Verlag
- Springer Vienna
- Erschienen in
-
Archives of Virology / Ausgabe 12/2025
Print ISSN: 0304-8608
Elektronische ISSN: 1432-8798 - DOI
- https://doi.org/10.1007/s00705-025-06440-0
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