Genetic characterization of Porcine circovirus type 2 from 2013 to 2018 in Shandong Province, China
文献类型： 外文期刊
作者： Wang, Shuo 1 ; Xin, Changxun 2 ; Wu, Xiaoyan 1 ; Shi, Jianli 2 ; Peng, Zhe 2 ; Sun, Panpan 2 ; Wang, Yan 1 ; Xu, Shaojian 2 ;
作者机构： 1.Shandong Normal Univ, Coll Life Sci, Jinan, Shandong, Peoples R China
2.Shandong Acad Agr Sci, Div Swine Dis, Shandong Prov Key Lab Anim Dis Control & Breeding, Inst Anim Sci & Vet Med, Jinan, Shandong, Peoples R China
3.Qingdao Agr Univ, Qingdao, Shandong, Peoples R China
关键词： genetic evolution; genotype; ORFs; PCV2; phylogenetic analysis
期刊名称：VETERINARY MEDICINE AND SCIENCE （ 影响因子：1.95； 五年影响因子：2.117 ）
ISSN：
年卷期：
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收录情况： SCI
摘要： PCV2 belongs to the genus Circovirus, family Circoviridae, who is recognized as the causative agents of postweaning multisystemic wasting syndrome. Since being found to China in 2000, it has caused serious damage to the pig industry. In this study, we downloaded 40 PCV2 genome-wide sequences uploaded to GenBank from 2013 to 2018 in Shandong Province, including 23 uploaded by our laboratory. Construction of a genome-wide evolution tree using MEGA V5.0 software. Phylogenetic tree analysis indicated that the genotype of PCV2 in Shandong Province was: three genotypes coexisted (2a, 2b, 2d); among them, PCV2d has become the main genotype in the province due to its number and spread range. Amino acid sequence analysis of different genotypes of ORF2 showed that specific amino acid sites exist in different genotypes, with the most significant range of 81-160; different genotypes of PCV2 can be distinguished at the molecular level. This study found that due to the increase in infections of the PCV2d genotype in recent years, it may replace PCV2b as the dominant base in Shandong.
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