期刊
ARCHIVES OF VIROLOGY
卷 -, 期 -, 页码 -出版社
SPRINGER WIEN
DOI: 10.1099/0022-1317-80-6-1541
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资金
- National Natural Science Foundation of China [U20A2036]
- Project of State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products [ZS20190102]
- Ningbo Science and Technology Innovation 2025 Major Project [2019B10004]
- Natural Science Foundation of Ningbo City [2019A610404]
- K.C. Wong Magna Fund of Ningbo University
In this study, a novel picorna-like virus named Cheilomenes sexmaculata picorna-like virus 1 (CSPLV1) was identified in the ladybird beetle Cheilomenes sexmaculata. CSPLV1 belongs to the unclassified group closely related to members of the family Solinviviridae.
The ladybird beetle Cheilomenes sexmaculata (family Coccinellidae, order Coleoptera) is a common insect predator of agricultural pests. In this study, the full genome sequence of a novel picorna-like virus, tentatively named Cheilomenes sexmaculata picorna-like virus 1 (CSPLV1), was identified in C. sexmaculata. The full-length sequence of CSPLV1 is 11,384 nucleotides (nt) in length (excluding the polyA tail), with one predicted open reading frame (ORF) encoding a polyprotein of 3727 amino acids, a 13-nt 5' untranslated region (UTR), and a 187-nt 3' UTR. The ORF of CSPLV1 consists of four distinct domains, including an RNA virus helicase domain (nt 3029-3319), a peptidase domain (nt 5555-6121), an RNA-dependent RNA polymerase domain (nt 7154-8101), and a picorna-like coat protein domain (nt 8606-9283). Phylogenetic analysis based on the conserved RdRP sequence showed that CSPLV1, together with Wuhan house centipede virus 3, Hypera postica associated virus 1, and Diabrotica undecimpunctata virus 1, forms an unclassified group that is closely related to members of the family Solinviviridae. To the best of our knowledge, CSPLV1 is the first picorna-like virus discovered in C. sexmaculata.
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