Login | Request Account (DAF staff only)

Molecular characterisation of a novel sadwavirus infecting cattleya orchids in Australia

Share this record

Add to FacebookAdd to LinkedinAdd to XAdd to WechatAdd to Microsoft_teamsAdd to WhatsappAdd to Any

Export this record

View Altmetrics

Tran, N. T., Campbell, P. R., Crew, K. S. and Geering, A. D. W. (2024) Molecular characterisation of a novel sadwavirus infecting cattleya orchids in Australia. Archives of Virology, 169 (3). p. 68. ISSN 1432-8798

[img] Microsoft PowerPoint (Supplementary 1)
[img] Microsoft Word (Supplementary 2)

Article Link: https://doi.org/10.1007/s00705-024-05980-1


The complete genome sequence of a novel sadwavirus infecting cattleya orchids in South East Queensland is described. Isometric virions of c. 27 nm diameter were observed in sap extracts viewed under a transmission electron microscope, and the genome sequence of this virus was determined by high-throughput sequencing. The viral genome consists of two RNA components, 5,910 and 4,435 nucleotides (nt) in length, each encoding a long polyprotein, with predicted cleavage sites at H/Y, E/G, Q/S, and Q/G for the RNA1 and T/G for the RNA2 translation products, respectively. RNA2 has an additional small ORF of 684 nt near the 3ʹ untranslated region. Phylogenetic analysis based on an amino acid sequence alignment of the Pro-Pol region suggested that this virus is most closely related to pineapple secovirus A, a member of the subgenus Cholivirus, but warrants classification as a member of a new species because it exhibited no more than 64% amino acid identity in pairwise sequence comparisons. Because of the prominent purple ringspots that were observed on the leaves of some of the plants, we propose the name “cattleya purple ringspot virus” for this virus (suggested species name: “Sadwavirus cattleyacola”).

Item Type:Article
Corporate Creators:Department of Agriculture and Fisheries, Queensland
Business groups:Horticulture and Forestry Science
Subjects:Science > Botany > Genetics
Plant pests and diseases > Plant pathology
Plant pests and diseases > Pest control and treatment of diseases. Plant protection
Agriculture > By region or country > Australia
Live Archive:12 Mar 2024 02:08
Last Modified:12 Mar 2024 02:08

Repository Staff Only: item control page


Downloads per month over past year

View more statistics