title: Complete genomic sequence of an infectious pancreatic necrosis virus isolated from rainbow trout (Oncorhynchus mykiss) in China.
abstract: Infectious pancreatic necrosis (IPN) is a significant disease of farmed salmonids resulting in direct economic losses due to high mortality in China. However, no gene sequence of any Chinese infectious pancreatic necrosis virus (IPNV) isolates was available. In the study, moribund rainbow trout fry samples were collected during an outbreak of IPN in Yunnan province of southwest China in 2013. An IPNV was isolated and tentatively named ChRtm213. We determined the full genome sequence of the IPNV ChRtm213 and compared it with previously identified IPNV sequences worldwide. The sequences of different structural and non-structural protein genes were compared to those of other aquatic birnaviruses sequenced to date. The results indicated that the complete genome sequence of ChRtm213 strain contains a segment A (3099 nucleotides) coding a polyprotein VP2-VP4-VP3, and a segment B (2789 nucleotides) coding a RNA-dependent RNA polymerase VP1. The phylogenetic analyses showed that ChRtm213 strain fell within genogroup 1, serotype A9 (Jasper), having similarities of 96.3% (segment A) and 97.3% (segment B) with the IPNV strain AM98 from Japan. The results suggest that the Chinese IPNV isolate has relative closer relationship with Japanese IPNV strains. The sequence of ChRtm213 was the first gene sequence of IPNV isolates in China. This study provided a robust reference for diagnosis and/or control of IPNV prevalent in China.
authors.affiliation: Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Harbin, China.|College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China.
authors.forename: Feng
authors.initials: F
authors.lastname: Ji
authors.affiliation: Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Harbin, China.
authors.forename: Jing-Zhuang
authors.initials: JZ
authors.lastname: Zhao
authors.affiliation: Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Harbin, China.
authors.forename: Miao
authors.initials: M
authors.lastname: Liu
authors.affiliation: Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Harbin, China.
authors.forename: Tong-Yan
authors.initials: TY
authors.lastname: Lu
authors.affiliation: Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Harbin, China.
authors.forename: Hong-Bai
authors.initials: HB
authors.lastname: Liu
authors.affiliation: Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Harbin, China. xwsc20@tom.com.
authors.forename: Jiasheng
authors.initials: J
authors.lastname: Yin
authors.affiliation: Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Harbin, China. lmxu0917@163.com.
authors.forename: Li-Ming
authors.initials: LM
authors.lastname: Xu
mesh_terms: D000595:Amino Acid Sequence / Q000235:genetics; D000818:Animals; D001483:Base Sequence; D002681:China; D005393:Fish Diseases / Q000235:genetics* / Q000821:virology; D018061:Infectious pancreatic necrosis virus / Q000235:genetics* / Q000472:pathogenicity; D058977:Molecular Sequence Annotation; D017686:Oncorhynchus mykiss / Q000235:genetics / Q000821:virology*; D010802:Phylogeny
keywords: Aquatic birnaviruses; Genogroups; Infectious pancreatic necrosis virus ChRtm213; Molecular characterization; Phylogeny; Rainbow trout