Isolation of avian infectious bronchitis coronavirus from domestic peafowl (Pavo cristatus) and teal (Anas)

文献类型： 外文期刊

第一作者： Liu, SW

作者： Liu, SW;Chen, JF;Chen, JD;Kong, XG;Shao, YH;Han, ZX;Feng, L;Cai, XH;Gul, SL;Liu, M

作者机构：

关键词： POLYMERASE-CHAIN-REACTION;PHEASANTS PHASIANUS-COLCHICUS;FRAGMENT-LENGTH-POLYMORPHISM;TURKEY CORONAVIRUS;SEQUENCE-ANALYSIS;EXPERIMENTAL INOCULATION;SUBSEQUENT CHALLENGE;PERITONITIS VIRUS;GLYCOPROTEIN GENE;SARS CORONAVIRUS

期刊名称：JOURNAL OF GENERAL VIROLOGY （ 影响因子：3.891； 五年影响因子：3.719 ）

ISSN：

年卷期：

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收录情况： SCI

摘要： Coronavirus-like viruses, designated peafowl/China/LKQ3/2003 (pf/CH/LKQ3/03) and teal/China/LDT3/2003 (tl/CH/LDT3/03), were isolated from a peafowl and a teal during virological surveillance in Guandong province, China. Partial genomic sequence analysis showed that these isolates had the S-3-M-5-N gene order that is typical of avian coronaviruses. The spike, membrane and nucleocapsid protein genes of pf/CH/LKQ3/03 had > 99 % identity to those of the avian infectious bronchitis coronavirus H120 vaccine strain (Massachusetts serotype) and other Massachusetts serotype isolates. Furthermore, when pf/CH/LKQ3/03 was inoculated experimentally into chickens (specific-pathogen-free), no disease signs were apparent. tl/CH/LDT3/03 had a spike protein gene with 95 % identity to that of a Chinese infectious bronchitis virus (IBV) isolate, although more extensive sequencing revealed the possibility that this strain may have undergone recombination. When inoculated into chickens, tl/CH/LDT3/03 resulted in the death of birds from nephritis. Taken together, this information suggests that pf/CH/LKQ3/03 might be a revertant, attenuated vaccine IBV strain, whereas tl/CH/LDT3/03 is a nephropathogenic field IBV strain, generated through recombination. The replication and non-pathogenic nature of IBV in domestic peafowl and teal under field conditions raises questions as to the role of these hosts as carriers of IBV and the potential that they may have to transmit virus to susceptible chicken populations.

分类号： R37

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