High prevalence of torque teno sus virus in China and genetic diversity of the 5' non-coding region

文献类型： 外文期刊

第一作者： Long, Jin-Xue

作者： Long, Jin-Xue;Gao, Fei;Yuan, Shi-Shan;Tong, Guang-Zhi;Wei, Zu-Zhang;Zhai, Shao-Lun;Wei, Wen-Kang;Chen, Qin-Ling;Lv, Dian-Hong;Wu, Da-Cheng;Zhai, Shao-Lun;Luo, Man-Lin

作者机构：

关键词： 5' non-coding genes;Genetic diversity;Multiple viral strains;Prevalence;Torque teno sus virus;TTSuVk2b

期刊名称：ARCHIVES OF VIROLOGY （ 影响因子：2.574； 五年影响因子：2.466 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Members of the family Anelloviridae are emerging circular DNA viruses infecting many species of vertebrates including pigs. To date, members of two distinct genera, Iotatorquevirus, including torque teno sus virus 1a and torque teno sus virus 1b (TTSuV1a and TTSuV1b), and Kappatorquevirus, including torque teno sus virus k2a and torque teno sus virus k2b (TTSuVk2a and TTSuVk2b), have been identified in domestic pigs and wild boars. The goal of this study was to evaluate the prevalence and genetic diversity of these viruses based on 5' non-coding genes in Chinese swine herds experiencing clinical symptoms. One hundred eighty-five clinical samples from 11 different regions, collected during 2008-2009, were analyzed using a PCR method, and the results revealed a high TTSuV-positive rate of 78.9 % (146/185) in pigs. Moreover, we detected co-infection with multiple TTSuV strains in the same pig. Nucleotide sequencing results revealed greater genetic diversity within the genus Kappatorquevirus than within the genus Iotatorquevirus. In addition, TTSuVk2b, a novel virus discovered in New Zealand in 2012, was also identified in this study. In summary, the present work helps us obtain more knowledge about the epidemiology and genetic diversity of TTSuVs.

分类号： R37

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