Herpesvirus Diversity and Evolution

A special issue of Microorganisms (ISSN 2076-2607).

Deadline for manuscript submissions: closed (28 February 2021) | Viewed by 9144

Special Issue Editor


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Guest Editor
Bioinformatics, Scientific Institute, IRCCS E. MEDEA, 23842 Bosisio Parini, Lecco, Italy
Interests: virus evolution; natural selection; viral phylodynamics; molecular dating; host-pathogen interaction; viral genome variability; molecular evolution

Special Issue Information

Dear Colleagues,

Herpesviruses are a group of large DNA viruses that can infect a wide spectrum of species, spanning from mammals to birds and reptiles. These viruses not only infect a large range of hosts, but they are globally distributed and, in the case of human herpesviruses, infect the overwhelming majority of the population. Herpesviruses usually establish a lifelong latent infection but in some peculiar cases can result in different disease. They are largely host specific, and co-evolution with their hosts is well established, but distantly and closely related host switches are common. The investigation of viral genetic determinants and understanding the molecular evolution of these viruses can have an impact from a biomedical point of view.

This Special Issue will highlight all the evolutionary processes and mechanisms that characterize the evolutionary history and adaptation of all herpesviruses, infecting both humans and all other animals. This includes, but is not limited to, topics such as phylogenetic analyses, molecular dating estimation, and co-divergence studies.

Dr. Diego Forni
Guest Editor

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Published Papers (3 papers)

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26 pages, 5168 KiB  
Article
Genomes of Anguillid Herpesvirus 1 Strains Reveal Evolutionary Disparities and Low Genetic Diversity in the Genus Cyprinivirus
by Owen Donohoe, Haiyan Zhang, Natacha Delrez, Yuan Gao, Nicolás M. Suárez, Andrew J. Davison and Alain Vanderplasschen
Microorganisms 2021, 9(5), 998; https://doi.org/10.3390/microorganisms9050998 - 5 May 2021
Cited by 10 | Viewed by 3123
Abstract
Anguillid herpesvirus 1 (AngHV-1) is a pathogen of eels and a member of the genus Cyprinivirus in the family Alloherpesviridae. We have compared the biological and genomic features of different AngHV-1 strains, focusing on their growth kinetics in vitro and genetic content, [...] Read more.
Anguillid herpesvirus 1 (AngHV-1) is a pathogen of eels and a member of the genus Cyprinivirus in the family Alloherpesviridae. We have compared the biological and genomic features of different AngHV-1 strains, focusing on their growth kinetics in vitro and genetic content, diversity, and recombination. Comparisons based on three core genes conserved among alloherpesviruses revealed that AngHV-1 exhibits a slower rate of change and less positive selection than other cypriniviruses. We propose that this may be linked to major differences in host species and corresponding epidemiological circumstances. Efforts to derive evolutionary rate estimates for cypriniviruses under various theoretical models were ultimately unrewarding. We highlight the potential value of future collaborative efforts towards generating short-term evolutionary rate estimates based on known sequence sampling dates. Finally, we revealed that there is significantly less genetic diversity in core gene sequences within cyprinivirus species clades compared to species in the family Herpesviridae. This suggests that cyprinivirus species may have undergone much more vigorous purifying selection post species clade divergence. We discuss whether this may be linked to biological and anthropogenic factors or to sampling bias, and we propose that the comparison of short-term evolutionary rates between species may provide further insights into these differences. Full article
(This article belongs to the Special Issue Herpesvirus Diversity and Evolution)
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26 pages, 1654 KiB  
Article
Expanding the Geographic Characterisation of Epstein–Barr Virus Variation through Gene-Based Approaches
by Marco Telford, David A. Hughes, David Juan, Mark Stoneking, Arcadi Navarro and Gabriel Santpere
Microorganisms 2020, 8(11), 1686; https://doi.org/10.3390/microorganisms8111686 - 29 Oct 2020
Cited by 10 | Viewed by 4144 | Correction
Abstract
The Epstein–Barr Virus (EBV) infects the vast majority of human individuals worldwide (~90%) and is associated with several diseases, including different types of cancer and multiple sclerosis, which show wide variation in incidence among global geographical regions. Genetic variants in EBV genomic sequences [...] Read more.
The Epstein–Barr Virus (EBV) infects the vast majority of human individuals worldwide (~90%) and is associated with several diseases, including different types of cancer and multiple sclerosis, which show wide variation in incidence among global geographical regions. Genetic variants in EBV genomic sequences have been used to determine the geographical structure of EBV isolates, but our understanding of EBV diversity remains highly incomplete. We generated sequences for 13 pivotal EBV genes derived from 103 healthy individuals, expanding current EBV diversity datasets with respect to both geographic coverage and number of isolates per region. These newly generated sequences were integrated with the more than 250 published EBV genomes, generating the most geographically comprehensive data set of EBV strains to date. We report remarkable variation in single-gene phylogenies that, when analysed together, show robust signals of population structure. Our results not only confirm known major global patterns of geographic variation, such as the clear separation of Asian isolates from the rest, and the intermixed relationships among African, European and Australian isolates, but yield novel phylogenetic relationships with previously unreported populations. We provide a better understanding of EBV’s population structure in South America, Africa and, by the inclusion of Turkey and Georgia, we also gain insight into EBV diversity in Western Asia, a crossroads connecting Europe, Africa and Asia. In summary, our results provide a detailed world-wide characterisation of EBV genetic clusters, their enrichment in specific geographic regions, novel inter-population relationships, and a catalogue of geographically informative EBV genetic variants. Full article
(This article belongs to the Special Issue Herpesvirus Diversity and Evolution)
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4 pages, 1811 KiB  
Correction
Correction: Telford et al. Expanding the Geographic Characterisation of Epstein–Barr Virus Variation through Gene-Based Approaches. Microorganisms 2020, 8, 1686
by Marco Telford, David A. Hughes, David Juan, Mark Stoneking, Arcadi Navarro and Gabriel Santpere
Microorganisms 2021, 9(11), 2328; https://doi.org/10.3390/microorganisms9112328 - 11 Nov 2021
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Abstract
The authors wish to make the following correction to this paper [...] Full article
(This article belongs to the Special Issue Herpesvirus Diversity and Evolution)
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