Genetic Diversity and Genotype Analysis of Duck Circovirus

文献类型： 外文期刊

第一作者： Fu, Guanghua

作者： Fu, Guanghua;Shi, Shaohua;Huang, Yu;Cheng, Longfei;Peng, Chunxiang;Wan, Chunhe;Chen, Hongmei;Lin, Fang;Lin, Jiansheng;Fu, Guanghua;Shi, Shaohua;Huang, Yu;Cheng, Longfei;Wan, Chunhe;Chen, Hongmei;Lin, Fang;Lin, Jiansheng

作者机构：

关键词： genotype;genome;GenBank sequence data;genetic diversity;nucleotide diversity;genomic size;ecologically divergent;evolutional diversity

期刊名称：AVIAN DISEASES （ 影响因子：1.577； 五年影响因子：1.915 ）

ISSN：

年卷期：

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收录情况： SCI

摘要： To investigate the genetic diversity and genotype of duck circovirus (DuCV), nine full-length DuCV genomes were determined from clinical samples. Multiple sequence alignment and phylogenetic analyses were performed on the nine viral genome sequences as well as on 27 genome sequences retrieved from the GenBank database. Pairwise analysis showed that the determined genome sequences have a genome organization identical to the 27 sequences and share 83.3%-99.8% identity among themselves and 82.6%-99.9% with the other 27 sequences. Phylogenetic analysis revealed that all 36 viral genome sequences are divided into two lineages, DuCV1 and DuCV2, in which the nucleotide diversity between genome sequences in these two lineages ranged from 13.2%-17.4%; these may be regarded as two types of viruses. Viruses under DuCV1 and DuCV2 are further clustered into different sublineages. When analyzed using the method for genotype definition proposed by Grau-Roma et al, these different sublineages can be defined as genotypes DuCV1a, DuCV1b, DuCV2a, DuCV2b, and DuCV2c. In addition, the viral sequences obtained from mainland China are different in genomic size and share a diversity of no less than 13.2%, including the sequences that came from all genotypes. This suggests that the DuCVs prevalent in domestic duck flocks in China are ecologically divergent.

分类号： R36

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