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First complete genome characterization of duck plague virus from India.

ABSTRACT: In this study, we report the complete genome sequencing of the Duck plague virus from India for the first time. The sequencing was done on the MinION nanopore sequencer from Oxford Nanopore Technologies. The closest relative is the European strain 2085v, with 99.98 and 99.8% identity at the amino acid and nucleotide level respectively. Moreover, 72 out of 77 ORFs are completely conserved between the 2 strains. The high similarity with the European strain over the only three other pathogenic strains reported from China points to the circulation of European strain in India. The fly pathways of migratory birds and co-habitation with native species being a probable reason. More complete genome data from diverse sampling locations are needed to characterize the genomic features, develop diagnostics, vaccines, and understand the evolution of the virus.

SUBMITTER: Aasdev A

PROVIDER: S-EPMC8630295 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature

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First complete genome characterization of duck plague virus from India.

Aasdev Ashutosh A Pawar Satyam D SD Mishra Anamika A Dubey Chandan K CK Patil Sharan S SS Gogoi Sophia M SM Bora Durlav P DP Barman Nagendra N NN Raut Ashwin A AA

Virusdisease 20211029 4

In this study, we report the complete genome sequencing of the Duck plague virus from India for the first time. The sequencing was done on the MinION nanopore sequencer from Oxford Nanopore Technologies. The closest relative is the European strain 2085v, with 99.98 and 99.8% identity at the amino acid and nucleotide level respectively. Moreover, 72 out of 77 ORFs are completely conserved between the 2 strains. The high similarity with the European strain over the only three other pathogenic stra ...[more]

PMID: 34901326

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Project description:BackgroundDuck viral enteritis, commonly known as duck plague (DP), is an acute and contagious fatal disease in ducks, geese, and swans caused by the DP virus (DPV). It poses a serious threat to the growth of duck farming in the Haor (wetland) areas of Bangladesh.AimThis study aimed to detect the circulating DPV by molecular characterization, followed by phylogenetic analysis, targeting the UL30 gene in infected ducks from five Haor districts in Bangladesh and to observe the variation in the genome sequence between the field virus and vaccine strain of DPV.MethodsA total of 150 samples (liver, 50; intestine, 50; and oropharyngeal tissue, 50) were collected from DP-suspected sick/dead ducks from 50 affected farms in Kishoreganj, Netrokona, B. Baria, Habiganj, and Sunamganj districts in Bangladesh. For the identification of DPV in collected samples, polymerase chain reaction (PCR) was utilized. Nucleotide sequences of the amplified UL30 gene were compared with those of other DPV strains available in GenBank.ResultsOf the 150 samples, 90 (60%) were found to be positive for DPV, as confirmed by PCR. Organ-wise prevalence was higher in the liver (72%), followed by the intestine (64%) and oropharyngeal tissue (44%). Regarding areas, the highest and lowest prevalence in the liver and intestine was observed in Habiganj and B. Baria, respectively, whereas the highest and lowest prevalence in the oropharyngeal tissue was observed in B. Baria and Habiganj, respectively. Two isolates, BAU/KA/DPV(B1)/2014 from Kishoreganj and BAU/KA/DPV(B4)/2014 from Sunamganj were sequenced, and phylogenetic analysis revealed that these isolates are evolutionarily closely related to Chinese isolates of DPV. Additionally, the isolates of DPV BAU/KA/DPV(B1)/2014 and BAU/KA/DPV(B4)/2014 showed the highest (98%) similarity to each other. The nucleotide sequence of the isolate BAU/KA/DPV(B1)/2014 exhibited higher nucleotide variability (246 nucleotides) than that of the vaccine strain (accession no. EU082088), which may affect protein function and additional drug sensitivity.ConclusionBased on the findings of the molecular study, it can be assumed that the Bangladeshi isolates and all Chinese isolates of DPV may have a common ancestry.

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First complete genome characterization of duck plague virus from India.

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First complete genome characterization of duck plague virus from India.

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