Identification of novel Newcastle disease virus sub-genotype VII-(j) based on the fusion protein

作者: Majid Esmaelizad , Vafa Mayahi , Maryam Pashaei , Hossein Goudarzi

DOI: 10.1007/S00705-016-3189-9

关键词: VirulenceBiologyGeneGenBankNewcastle diseaseVirus classificationGenotypeVirusVirologyGeneticsPhylogenetic tree

摘要: Newcastle disease virus (NDV) is believed to be the cause of fatal poultry worldwide. The fusion (F) protein plays a key role in pathogenesis, and it also used for classification. In this study, we determined complete coding sequence F gene new velogenic NDV isolates with an intravenous pathogenicity index (IVPI) 1.8 mean death time (MDT) 72 or 48 h. Complete sequences genes Iranian were amplified sequenced both directions. These compared 195 nucleotide from GenBank (available as 07/17/2016). A phylogenetic tree was constructed gene, using MEGA6 software statistical analysis based on 500 bootstrap replicates. Evolutionary distances revealed that virulent Iran belonged genotype VII distinct sub-genotype named VII-(j). This showed 3% divergence VIId. Recombination these not recombinant NDVs.

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