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Complete genome sequence and phylogenetic analysis of red seabream iridovirus isolated from a cage-cultured small yellow croaker (Larimichthys polyactis) in China

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Abstract

Iridoviruses are emerging pathogens that are widespread in diverse environments and hosts. Numerous members of the family Iridoviridae are known to cause severe disease in freshwater and marine organisms. Here, we report the complete genome sequence and phylogenetic analysis of iridovirus strain LPIV-ZS-2021, isolated from a small yellow croaker (Larimichthys polyactis) in China. The genome sequence comprises 110,560 bp with a G+C content of 53.42%, has 104 putative open reading frames (ORFs), and shares the highest sequence similarity with red seabream iridovirus (RSIV) isolated in Japan (98.61%). Phylogenetic analysis revealed that it belongs to RSIV clade 1. This is the first fully sequenced RSIV genome from a small yellow croaker. The host range expansion of members of the genus Megalocytivirus warrants further attention to determine its potential economic and ecological impact.

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Funding

This study was supported by grants provided by the Key Research and Development Program of Zhejiang Province (2020C02015), the Second Batch of Zhoushan City Special Funds for the Development of Modern Fishery (2020)21, and the National Key Research and Development Project (2020YFD0900803).

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Authors and Affiliations

  1. Zhejiang Marine Fisheries Research Institute, Key Laboratory of Mariculture and Enhancement of Zhejiang Province, Zhoushan, 316021, China

    Gengshen Wang & Wenjun Xu

  2. Marine and Fisheries Research Institute, Zhejiang Ocean University, Zhoushan, 316100, China

    Gengshen Wang, Wei Xu, Haoxue Cheng, Jianjun Xie & Wenjun Xu

  3. Huaian Customs District, Huaian, 223001, China

    Aixu Bai

  4. Institute of Preventive Veterinary Medicine and Key Laboratory of Animal Virology of Ministry of Agriculture, College of Animal Sciences, Zhejiang University, Hangzhou, 310058, China

    Qizhang Liang

Authors
  1. Gengshen Wang
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  2. Wei Xu
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  3. Haoxue Cheng
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  4. Jianjun Xie
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  5. Aixu Bai
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  6. Wenjun Xu
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  7. Qizhang Liang
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Contributions

Conceptualization: XWJ and LQZ. Methodology: WGS, XJJ, XW, and CHX. Software: WGS, BAX. Writing—review and editing: LQZ. Funding acquisition: WGS, XJJ, and XWJ

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Correspondence to Qizhang Liang.

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The authors declare that they have no conflict of interest.

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Handling Editor: Kalpana Agnihotri .

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Wang, G., Xu, W., Cheng, H. et al. Complete genome sequence and phylogenetic analysis of red seabream iridovirus isolated from a cage-cultured small yellow croaker (Larimichthys polyactis) in China. Arch Virol 167, 2085–2088 (2022). https://doi.org/10.1007/s00705-022-05508-5

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  • DOI: https://doi.org/10.1007/s00705-022-05508-5

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