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Long-range PCR and high-throughput sequencing of Ostreid herpesvirus 1 indicate high genetic diversity and complex evolution process

文献类型： 外文期刊

作者： Bai, Chang-Ming 1 ; Morga, Benjamin 5 ; Rosani, Umberto 6 ; Shi, Jie 1 ; Li, Chen 1 ; Xin, Lu-Sheng 1 ; Wang, Chong-Mi 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Key Lab Maricultural Organism Dis Control, Minist Agr, Qingdao, Shandong, Peoples R China

2.Chinese Acad Fishery Sci, Lab Marine Fisheries Sci & Food Prod Proc, Qingdao Natl Lab Marine Sci & Technol, Qingdao, Shandong, Peoples R China

3.Chinese Acad Fishery Sci, Qingdao Key Lab Mariculture Epidemiol & Biosecur, Qingdao, Shandong, Peoples R China

4.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Qingdao, Shandong, Peoples R China

5.IFREMER, LGP, Ave Mus Loup, F-17390 La Tremblade, France

6.Univ Padua, Dept Biol, Padua, Italy

关键词： Long-range PCR; OsHV-1; High-throughput sequencing; Evolution; Diversity

期刊名称：VIROLOGY （ 影响因子：3.616； 五年影响因子：3.967 ）

ISSN： 0042-6822

年卷期： 2019 年 526 卷

页码：

收录情况： SCI

摘要： Ostreid herpesvirus 1 (OsHV-1) is an important pathogen associated with mass mortalities of cultivated marine mollusks worldwide. Since no cell line allows OsHV-1 replication in vitro, it is difficult to isolate enough high-purity viral DNA for High-Throughput Sequencing (HTS). We developed an efficient approach for the enrichment of OsHV-1 DNA for HTS with long-range PCR. Twenty-three primer pairs were designed to cover 99.3% of the reference genome, and their performances were examined on ten OsHV-1 infected samples. Amplicon mixtures from six successfully amplified samples were sequenced with Illumina platform, and one of them (ZKO118) was also sequenced with the PacBio platform. PacBio reads were assembled into 2 scaffolds compared to 9-68 scaffolds assembled from the Illumina reads. Genomic comparison confirmed high genetic diversity among OsHV-1 variants. Phylogenetic analysis revealed that OsHV-1 evolution was mainly impacted by its host species rather than spatial segregation.

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