Acta Agriculturae Boreali-Sinica ›› 2023, Vol. 38 ›› Issue (1): 232-238. doi: 10.7668/hbnxb.20193540

Special Issue: Plant protection Animal husbandry Biotechnology

• Animal Husbandry·Fisheries·Veterinarian • Previous Articles    

Isolation and Genome-wide Evolutionary Analysis of Novel Variant Porcine parvovirus Type 1 in Shandong Province

YU Yongle1, YAO Yanzhu2, ZHANG Ruihua1, CHEN Chao1, ZHAO Ting1, SHAN Hu1, HAN Xianjie1,   

  1. 1 College of Veterinary Medicine,Qingdao Agricultural University,Shandong Provincial Key Laboratory of Preventive Veterinary Medicine, Qingdao 266109,China
    2 College of Plant Health and Medicine, Qingdao Agricultural University,Qingdao 266109,China
  • Received:2022-07-15 Published:2023-02-28

Abstract:

It conducted to analyze the biological characteristics of Porcine parvovirus type 1 (PPV1) mutant strains.The PPV was isolated and cultured from 67 aborted fetal tissue samples collected from pig farms in different regions of Shandong Province,and identified by electron microscopy and IFA test.DNAMAN V6 was used to demonstrate and compare the secondary structures of 5'UTR and 3'UTR,MEGA V7 was used for genetic evolutionary analysis,and finally the multi-step growth curve was used to compare the proliferation ability of the isolates in susceptible cells.Three strains were isolated and identified as PPV type 1 strains,named SDPV1,SDPV2 and SDPV3,with GenBank accession numbers ON924737,ON924738 and ON924739,respectively;the whole gene sequence lengths of the three isolates were basically the same,among which the 5'-UTR sequence was highly conserved and had a Y-shaped structure,while the 3' UTR had a U-shaped structure with some differences in individual bases;there were five non-synonymous mutation sites in the amino acid sequence of VP2,namely T20A,R82K,Q226E,D366N and K407N,which were found for the first time in domestic strains.The growth curve showed that the mutant strain had a relatively fast growth trend,with a 10-fold difference in the highest titer compared with the PPV-QN strain.It reported the genomic characteristics of PPV strains containing novel mutant loci.

Key words: Porcine parvovirus type 1, Mutant strain, Whole genome, Genetic variation

Cite this article

YU Yongle, YAO Yanzhu, ZHANG Ruihua, CHEN Chao, ZHAO Ting, SHAN Hu, HAN Xianjie. Isolation and Genome-wide Evolutionary Analysis of Novel Variant Porcine parvovirus Type 1 in Shandong Province[J]. Acta Agriculturae Boreali-Sinica, 2023, 38(1): 232-238. doi: 10.7668/hbnxb.20193540.

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