Identification of Pigeon Torque Teno Virus in White Racing Pigeons

Strategic Insights -

Research findings have led to the identification of Pigeon Torque Teno Virus (PTTV) in white racing pigeons exhibiting joint, ocular, and pock-like lesions. The study, published in Virus Genes, used molecular, microbiological, and histopathological analyses to detect the virus. The findings suggest that PTTV could be an emerging avian pathogen necessitating further investigation into its pathogenicity, transmission dynamics, and clinical significance in pigeons.

Key Takeaways:

  • The study was conducted by researchers from the Department of Animal Biotechnology, LUVAS, Hisar, Haryana, India, and involved the analysis of pooled samples of scab and swab collected from white racing pigeons with joint swelling, yellow exudates, and scab formation.
  • Initial screening focused on the detection of poxvirus using polymerase chain reaction (PCR), but subsequent next-generation sequencing (metagenomic sequencing) using the Illumina MiSeq platform identified the complete genome of PTTV.
  • The PTTV genome was found to be 1574 nucleotides in size and exhibited a nucleotide sequence similarity of 96.47% to 97.7% with a Canadian PTTV genome previously detected in the Bursa of Fabricius of a dead pigeon.
  • Genome annotation identified two open reading frames (ORFs): encoding replication-associated protein and viral capsid protein.
  • The presence of PTTV was further confirmed through real-time PCR and virus isolation in embryonated SPF chicken eggs and Vero cell cultures.
  • The study highlighted the need for further investigation into the pathogenicity, transmission dynamics, and clinical significance of PTTV in pigeons.

Statistics:

  • The genome size of PTTV was found to be 1574 nucleotides, with a nucleotide sequence similarity of 96.47% to 97.7% with a Canadian PTTV genome.
  • The study involved the analysis of pooled samples of scab and swab from 10 white racing pigeons.
  • The PTTV genome was isolated and sequenced using the Illumina MiSeq platform.
  • The study reported a 96.47% to 97.7% nucleotide sequence similarity between the PTTV genome and a Canadian PTTV genome.

Sources:

  • Detection, isolation, and complete genome sequencing of pigeon torque teno virus in Indian racing pigeons with pock-like lesions. Virus Genes, 2025.
  • Aman Kumar, et al. Detection, isolation, and complete genome sequencing of pigeon torque teno virus in Indian racing pigeons with pock-like lesions. Virus Genes, 2025.
  • Springer. Virus Genes. www.springer.com; www.springerlink.com/content/0920-8569/
  • Department of Animal Biotechnology, LUVAS, Hisar, Haryana, India.