The first complete genome sequence and pathogenicity characterization of fowl adenovirus 11 from chickens with inclusion body hepatitis in Pakistan
文献类型： 外文期刊
作者： Wang, Jing 1 ; Zaheer, Iqra 2 ; Saleemi, Muhammad Kashif 2 ; Qi, Xiaole 1 ; Gao, Yulong 1 ; Cui, Hongyu 1 ; Li, Kai 1 ; G 1 ;
作者机构： 1.Chinese Acad Agr Sci, State Key Lab Vet Biotechnol, Harbin Vet Res Inst, Harbin 150001, Peoples R China
2.Univ Agr Faisalabad, Dept Pathol, Faisalabad 38040, Pakistan
3.Jiangsu Coinnovat Ctr Prevent & Control Important, Yangzhou 225009, Jiangsu, Peoples R China
关键词： FAdV-11; Species D; Inclusion body hepatitis; Complete genome; Pathogenicity
期刊名称：VETERINARY MICROBIOLOGY （ 影响因子：3.293； 五年影响因子：3.599 ）
ISSN： 0378-1135
年卷期： 2020 年 244 卷
页码：
收录情况： SCI
摘要： Inclusion body hepatitis (IBH), hydropericardium syndrome, and gizzard erosion associated with fowl adeno-virus (FAdV) infections are reported globally and resulted in significant poultry industry economic losses. In 2018, severe IBH appeared in Pakistan in a 17-week-old layer flock. Subsequently, a FAdV-11 strain (designated as PKFAd18) was isolated from liver samples and identified based on phylogenetic analyses of the serotype-specific L1 region of the capsid hexon gene. There is no complete genome sequence of the Pakistani FAdV-11. This study successfully sequenced the complete genome of PKFAd18. The full genome of PKFAd18 contains 43 840 base pairs (bp) with a G + C content of 53.9 %, which is comparable to other FAdV serotypes. Similar to other FAdV-11 strains, PKFAd18 has only one fiber, while FAdV-1 and FAdV-4 have two fibers. Notably, PKFAd18 showed unique characteristics compared to other FAdV-11 strains. A natural large genomic deletion (1215 bp) appeared in tandem repeat region two, relative to the ON-NP2 strain. Phylogenetic analyses of the PKFAd18 penton gene showed higher homology with FAdV-9, highlighting potential natural recombination between FAdV-11 and FAdV-9. Moreover, the pathogenicity of PKFAd18 studied in specific-pathogen-free chickens showed that PKFAd18 is capable of inducing severe IBH and could be responsible for IBH in Pakistan. Thus, the first complete genome of FAdV-11 in Pakistan was sequenced in this study, which enriches the diversity of knowledge about FAdV-11 and is useful for developing diagnostics and vaccines for IBH induced by FAdV-11 in Pakistan.
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