Molecular characterization of chicken infectious anaemia virus (CIAV) in China during 2020-2021

被引：5
作者：
Sun, Hejing [1 ]
Yu, Shuilan [2 ]
Jiang, Tianhua [2 ]
Yan, Zhuanqiang [2 ]
Wang, Dingai [2 ]
Chen, Li [2 ]
Zhou, Qingfeng [2 ]
Yin, Lijuan [2 ]
Chen, Feng [1 ]
机构：
[1] South China Agr Univ, Coll Anim Sci, Guangzhou, Peoples R China
[2] Guangdong Lab Lingnan Modern Agr, Yunfu Branch, Yunfu, Peoples R China
来源：
AVIAN PATHOLOGY | 2023年 / 52卷 / 02期
关键词：
Immunosuppressive disease; chicken infectious anaemia virus; VP1; gene; whole genome; molecular characterization; phylogenetic analysis; SEQUENCE-ANALYSIS; BROILER-CHICKENS; AGENT; DISEASE; IDENTIFICATION; GENOME; PATHOGENICITY; EPIDEMIOLOGY;
D O I：
10.1080/03079457.2022.2155109
中图分类号：
S85 [动物医学（兽医学）];
学科分类号：
0906 ;
摘要：
Chicken infectious anaemia virus (CIAV) has been identified as the causative agent of chicken infectious anaemia (CIA), causing huge economic losses to the poultry industry globally. In this study, a total of 573 clinical samples were collected from 197 broiler farms in 17 provinces of China during 2020-2021. Among them, 375 samples (375/573, 65.4%) were positive for CIAV by real-time PCR. The positive rate of CIAV detection between different regions of China ranged from 46.67% (North China) to 81.25% (Central China). The nucleotide sequences of the VP1 gene were obtained for 91 CIAV strains, whole genome sequencing was successful for 72 out of 91 strains. Phylogenetic analysis based on the VP1 gene revealed that 91 CIAV strains currently circulating in China belong to three genotypes (II, IIIa and IIIb), and most of the CIAV strains belong to genotype IIIa. Phylogenetic analysis of the whole genome showed that 71 CIAV strains belong to genotype IIIa, and one strain belongs to genotype II. Sequence analysis showed several amino acid substitutions in both the VP1, VP2 and VP3 proteins. Our results enhance the understanding of the molecular characterization of CIAV infection in China.
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页码：119 / 127
页数：9
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