Acta Veterinaria et Zootechnica Sinica ›› 2024, Vol. 55 ›› Issue (9): 4051-4060.doi: 10.11843/j.issn.0366-6964.2024.09.029

• Preventive Veterinary Medicine • Previous Articles     Next Articles

Isolation, Identification and Pathogenicity Analysis of a Pigeon Paramyxovirus-1 Strain

Shan ZHANG1,2(), Dahu LIU1,2,3, Baojing LIU4, Lin LIANG1,2, Ruiying LIANG1,2, Xinming TANG1,2, Xusheng QIU5, Chan DING5, Jiabo DING1,2,*(), Shaohua HOU1,*()   

  1. 1. Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
    2. Key Laboratory of Animal Biosafety Risk Prevention and Control (North)/Key Laboratory of Veterinary Biological Products and Chemicals, Ministry of Agriculture and Rural Affairs, Beijing 100193, China
    3. Tianjin Key Laboratory of Agricultural Animal Breeding and Healthy Husbandry, College of Animal Science and Veterinary Medicine, Tianjin Agricultural University, Tianjin 300392, China
    4. Bejing Xinhexiang Technology Co., LLC, Beijing 100085, China
    5. Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China
  • Received:2023-11-16 Online:2024-09-23 Published:2024-09-27
  • Contact: Jiabo DING, Shaohua HOU E-mail:zhangshan0276@163.com;dingjiabo@caas.cn;houshaohua@caas.cn

Abstract:

A strain of pigeon paramyxovirus-1(PPMV-1) was isolated from the dead pigeon tissue in Tianjin region. To provide scientific basis for the development of PPMV-1 vaccines, the genetic evolution, biological characteristics, and pathogenicity of the virus were analyzed. The pathogens were identified by RT-PCR, virus isolation, purification by chicken embryos, genetic evolution analysis, pathogenicity analysis, and animal regression tests. A strain of PPMV-1 was isolated from the dead pigeons and named Pigeon/TJ/CH/020/2020 (TJ20). Sequence analysis and homology analysis of the virus F gene showed that the strain belonged to sub-genotype Ⅵ.2.1.1.2.2(Ⅵk), and the amino acid residues of the cleavage site were 112R-R-Q-K-R-F117, which were consistent with the molecular characteristics of NDV virulent strains. Hemagglutination inhibition revealed a noticeable difference between TJ20 and LaSota. The values of TCID50, EID50, MDT and ICPI were 10-8.64·0.1 mL-1, 10-8.38·0.1 mL-1, 62 h, 1.19. The animal infection experiment found that pigeons showed clinical symptoms on 4 dpc (day 4 post-challenge). The incidence rate and mortality were 100%, and the cloacal detoxification rate could reach 100% on 5 dpc. TJ20 was highly pathogenic to pigeons. This study successfully isolated a highly pathogenic sub-genotype Ⅵ.2.1.1.2.2(Ⅵk) TJ20 strain from samples of dead pigeons, providing important biological materials for the research and development of vaccine of PPMV-1 in the future.

Key words: pigeon paramyxovirus-1, isolation and identification, sub-genotype Ⅵ.2.1.1.2.2(Ⅵk), pathogenicity

CLC Number: