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June 1, 2018

Transcriptome-wide survey of pseudorabies virus using next- and third-generation sequencing platforms.

Pseudorabies virus (PRV) is an alphaherpesvirus of swine. PRV has a large double-stranded DNA genome and, as the latest investigations have revealed, a very complex transcriptome. Here, we present a large RNA-Seq dataset, derived from both short- and long-read sequencing. The dataset contains 1.3 million 100?bp paired-end reads that were obtained from the Illumina random-primed libraries, as well as 10 million 50?bp single-end reads generated by the Illumina polyA-seq. The Pacific Biosciences RSII non-amplified method yielded 57,021 reads of inserts (ROIs) aligned to the viral genome, the amplified method resulted in 158,396 PRV-specific ROIs, while we obtained 12,555 ROIs using…

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June 1, 2017

Comparison of pseudorabies virus China reference strain with emerging variants reveals independent virus evolution within specific geographic regions.

Pseudorabies virus (PRV) China reference strain Ea is genetically closely related to newly emerged variants; however, there is limited information about PRV Ea. Here, we compared PRV Ea with new variant strains by growth kinetics, genome sequencing, and protein expression analysis. Growth analysis showed that strain Ea forms smaller plaques than strain HNX. The full-length genome sequence of Ea revealed that it is clustered in the same subgroup as HNX. Ea and HNX strains exhibited similar extracellular virion protein polymorphisms, whereas strain Bartha expressed less VP26 and more GAPDH. In infected cells, strain Ea expressed high levels of IE180 protein,…

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February 10, 2016

Genomic analyses reveal that partial sequence of an earlier pseudorabies virus in China is originated from a Bartha-vaccine-like strain.

Pseudorabies virus (PRV), the causative agent of Aujeszky?s disease, has gained increased attention in China in recent years as a result of the outbreak of emergent pseudorabies. Several genomic and partial sequences are available for Chinese emergent and European-American strains of PRV, but limited sequence data exist for the earlier Chinese strains. In this study, we determined the complete genomic sequence of one earlier Chinese strain SC and one emergent strain HLJ8. Compared with other known sequences, we demonstrated that PRV strains from distinct geographical regions displayed divergent evolution. Additionally, we report for the first time, a recombination event between…

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May 22, 2015

Characterization of novel transcripts in pseudorabies virus.

In this study we identified two 3'-coterminal RNA molecules in the pseudorabies virus. The highly abundant short transcript (CTO-S) proved to be encoded between the ul21 and ul22 genes in close vicinity of the replication origin (OriL) of the virus. The less abundant long RNA molecule (CTO-L) is a transcriptional readthrough product of the ul21 gene and overlaps OriL. These polyadenylated RNAs were characterized by ascertaining their nucleotide sequences with the Illumina HiScanSQ and Pacific Biosciences Real-Time (PacBio RSII) sequencing platforms and by analyzing their transcription kinetics through use of multi-time-point Real-Time RT-PCR and the PacBio RSII system. It emerged…

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July 1, 2014

Strain Kaplan of pseudorabies virus genome sequenced by PacBio single-molecule real-time sequencing technology.

Pseudorabies virus (PRV) is a neurotropic herpesvirus that causes Aujeszky's disease in pigs. PRV strains are widely used as transsynaptic tracers for mapping neural circuits. We present here the complete and fully annotated genome sequence of strain Kaplan of PRV, determined by Pacific Biosciences RSII long-read sequencing technology. Copyright © 2014 Tombácz et al.

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