Complete genome sequence of shrimp hemocyte iridescent virus (SHIV) isolated from white leg shrimp, Litopenaeus vannamei

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Abstract
Infection with shrimp hemocyte iridescent virus (SHIV), a new virus of the family Iridoviridae isolated in China, results in a high mortality rate in white leg shrimp (Litopenaeus vannamei). The complete genome sequence of SHIV was determined and analyzed in this study. The genomic DNA was 165,809 bp long with 34.6% G+C content and 170 open reading frames (ORFs). Dotplot analysis showed that the longest repetitive region was 320 bp in length, including 11 repetitions of an 18-bp sequence and 3.1 repetitions of a 39-bp sequence. Two phylogenetic trees were constructed based on 27 or 16 concatenated sequences of proteins encoded by genes that are conserved between SHIV homologous and other iridescent viruses. The results of this study, suggest that SHIV should be considered a member of the proposed new genus “Xiairidovirus”.
Funding Information
  • China Agriculture Research System (CARS-47)
  • China ASEAN Maritime Cooperation Fund Project (2016-2018)
  • the program of Introducing Internationally Advanced Agricultural Science and Technology (948: 2016-X56)
  • the Project of the Aoshan Science and Technology Innovation Program of Qingdao National Laboratory for Marine Science and Technology (2015ASKJ02)
  • the Construction Programme for Distinguished Taishan Scholars of Shandong Province of China