First Report of Occurrences of Two Cyprinid Herpesvirus 3 Variants, I++ II− and I++ II+Δ, in China

First Report of Occurrences of Two Cyprinid Herpesvirus 3 Variants, I++ II− and I++ II+Δ, in China
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中国首次报道鲤鱼疱疹病毒 3 型 I II- 和 I II- 两种变种

DOI:
10.3147/jsfp.51.169
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发表时间:
2016
期刊:
影响因子:
0.6
通讯作者:
Zhongjian Chen
Zhongjian Chen
中科院分区:
农林科学4区
文献类型:
--
作者:
Zhenxing Liu;Hao Ke;Yanping Ma;Le Hao;Jiangyao Ma;Zhiling Liang;Zhongjian Chen

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鲤鱼疱疹病毒3型(CyHV-3)是引起鲤鱼疱疹病毒病(KHVD)的主要病原。尽管CyHV-3已在中国发现,但对该地区CyHV-3基因型分布的多样性知之甚少。为了提高现有基因分型方法的灵敏度,本研究在以往报道的双重PCR的基础上,建立了一种巢式PCR方法。采用巢式PCR技术对2010-2015年广东省和2013年河南省的CyHV-3感染鱼进行基因型鉴定。我们检测到3种基因型,包括亚洲优势型(I++ II+)和东亚和东南亚地区的两种新兴基因型(I++ II−和I++ II+Δ)。I++ II-是本研究中的主要基因型。在细胞培养中成功分离到两种CyHV-3变异株,即HZ 410和HZ 419分离株,其基因型分别为I++ II−和I++ II+Δ。这是国内首次同时分离到I++ II-和I++ II+Δ两种基因型。这些数据有助于对CyHV-3在中国传播模式的思考和探索。
Cyprinid herpesvirus 3 (CyHV-3) is the cause of a lethal disease named as koi herpesvirus disease (KHVD) in carp worldwide. Even though CyHV-3 has been found in China, little is known about the variety of CyHV-3 genotypes distributing in this area. In the present study, to improve the sensitivity.of current genotyping approaches, a nested-PCR method was constructed based on the duplex PCR reported previously. The nested-PCR targeting the markers I/II loci was used in genotype identification of CyHV-3 infected fish in Guangdong Province in 2010–2015 and Henan Province in 2013. We.detected 3 genotypes including an Asian dominant type (I++ II+ ) and two emerging genotypes in East Asian and South-East Asian regions (I++ II− and I++ II+Δ). I++ II− was the predominant genotype in this study. Two CyHV-3 variants, ZS410 and HZ419 isolates, were successfully isolated in cell culture and exhibited the genotype of I++ II− and I++ II+Δ, respectively. This is the first report of both I++ II− and I++ II+Δ genotypes.isolated in China. These data can contribute consideration and exploration of mode of CyHV-3 spread in China.
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