Full genome sequences of zebra-borne equine herpesvirus type 1 isolated from zebra, onager and Thomson’s gazelle.
Abstract: A strain of equine herpesvirus type 1 (EHV-1) was isolated from zebra. This strain, called "zebra-borne EHV-1", was also isolated from an onager and a gazelle in zoological gardens in U.S.A. The full genome sequences of the 3 strains were determined. They shared 99% identities with each other, while they shared 98% and 95% identities with the horse derived EHV-1 and equine herpesvirus type 9, respectively. Sequence data indicated that the EHV-1 isolated from a polar bear in Germany is one of the zebra-borne EHV-1 and not a recombinant virus. These results indicated that zebra-borne EHV-1 is a subtype of EHV-1.
Publication Date: 2014-06-11 PubMed ID: 24920546PubMed Central: PMC4197165DOI: 10.1292/jvms.14-0183Google Scholar: Lookup
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Summary
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This study deals with the genome sequencing of a strain of equine herpesvirus type 1 (EHV-1) found in various animals including zebras, onagers, and gazelles. The researchers concluded that this strain, which they named “zebra-borne EHV-1”, is a subtype of EHV-1.
The Strain of EHV-1
- The strain of equine herpesvirus type 1 (EHV-1) central to this study was originally derived from zebras. This is why it was named “zebra-borne EHV-1”.
- Apart from the zebras, the same strain was also derived from an onager and a Thomson’s gazelle. These animals were all located in zoological gardens in the USA.
Determining the Full Genome Sequences
- The researchers carried out full genome sequencing of the three strains of the virus found in the zebra, the onager, and the gazelle.
- It was found that the three strains shared 99% DNA identities with each other, signifying that they were virtually the same strain.
Comparison with Other EHV-1 Types
- When the zebra-borne EHV-1 was compared with EHV-1 derived from horses, it was found that they shared 98% DNA identity.
- Comparatively, the zebra-borne EHV-1 shared only 95% DNA identity with equine herpesvirus type 9.
- The researchers therefore concluded that the zebra-borne EHV-1 is closer in genetic make-up to the horse-derived EHV-1 than to equine herpesvirus type 9.
Zebra-Borne EHV-1 in Polar Bears
- Sequence data from the study also indicated that a strain of EHV-1 isolated from a polar bear in Germany is one of the zebra-borne EHV-1. This suggested the strain is not limited to equines.
- The fact that this strain turned out to be of the zebra-borne type and not a recombinant virus shows the extent to which this strain can spread among different species of animals, beyond just horses and other equines.
Concluding Remarks
- From the research findings, it was concluded that zebra-borne EHV-1 can be considered a subtype of EHV-1. This is based on the high degree of DNA identity it shared with the horse-derived EHV-1.
- Greater knowledge and understanding of these different EHV-1 subtypes can help in the later diagnosis and treatment of animals infected with the virus.
Cite This Article
APA
Guo X, Izume S, Okada A, Ohya K, Kimura T, Fukushi H.
(2014).
Full genome sequences of zebra-borne equine herpesvirus type 1 isolated from zebra, onager and Thomson’s gazelle.
J Vet Med Sci, 76(9), 1309-1312.
https://doi.org/10.1292/jvms.14-0183 Publication
Researcher Affiliations
- Department of Applied Veterinary Sciences, United Graduate School of Veterinary Sciences, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan.
MeSH Terms
- Amino Acid Sequence
- Animals
- Animals, Zoo
- Base Sequence
- DNA, Viral / chemistry
- DNA, Viral / genetics
- Equidae / virology
- Herpesviridae Infections / veterinary
- Herpesvirus 1, Equid / genetics
- Molecular Sequence Data
- Phylogeny
- Polymerase Chain Reaction / veterinary
- Polymorphism, Single Nucleotide / genetics
- Sequence Alignment
- Sequence Analysis, DNA
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Citations
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