Comprehensive analysis of equid herpesvirus recombination : an insight into the repeat regions
High-throughput sequencing of genomes has expanded our knowledge of the Alphaherpesvirinae, a widely extended subfamily of DNA viruses that recombine to increase their genetic diversity. It has been acknowledged that Equid herpesvirus 1 (EHV-1) and equid herpesvirus 4 (EHV-4), two alphaherpesviruses...
| Autores principales: | , , , , , |
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| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
| Publicado: |
Elsevier
2023
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/15284 https://doi.org/10.1016/j.jevs.2023.104916 |
| Sumario: | High-throughput sequencing of genomes has expanded our knowledge of the Alphaherpesvirinae, a widely extended subfamily of DNA viruses that recombine to increase their genetic diversity. It has been acknowledged that Equid herpesvirus 1 (EHV-1) and equid herpesvirus 4 (EHV-4), two alphaherpesviruses with an economic impact on the horse industry, can recombine. This work aimed to analyze interspecific recombination between all equid alphaherpesvirus species, using genomes of EHV-1, EHV-3, EHV-4, EHV-6, EHV-8, and EHV-9 available in GenBank. 14 events of recombination by RDP4 and Simplot between EHV-1 x EHV-4, EHV-1 x EHV-9, EHV-8 x EHV-1, and EHV-8 x EHV-9 were identified. 10 out of 14 events involved ORF64, a double-copy gene located at the repeat regions that codifies for the infected cell protein 4 (ICP4). Among the ICP4, recombination can be found between EHV-1 X EHV-9, EHV-8 X EHV-9, and EHV-1 X EHV-4, the former affects zebra-borne genotypes, a type of EHV-1 that infect wild equids, and the latter match with previous breakpoints reported in fields isolates. Consequently, these findings strongly suggest that ICP4 is a hotspot for recombination. This work describes novel recombination events and is the first genome-wide recombination analysis using all available equid alphaherpesvirus species genomes. |
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