Whole-genome transcriptional profiles of a novel marine fish iridovirus, Singapore grouper iridovirus (SGIV) in virus-infected grouper spleen cell cultures and in orange-spotted grouper, Epinephulus coioides

Yong Teng, Zhiwei Hou, Jie Gong, Hong Liu, Xiayang Xie, Liang Zhang, Xiaohong Chen, Qi Wei Qin

Research output: Contribution to journalArticle

38 Scopus citations


A DNA microarray containing all Singapore grouper iridovirus (SGIV) open reading frames (ORFs) was constructed to map the viral gene transcriptional profiles in virus-infected grouper spleen (GS) cells and in spleen tissues of virus-infected grouper. The results showed that viral genes started to be transcribed as early as 1 h postinfection (p.i.), and followed by a rapid increasing gene expression along with virus infection in cell cultures. The three temporal kinetic classes (15 immediate-early, 89 early and 53 late transcripts) were classified during an in vitro infection by their dependence on de novo protein synthesis and viral DNA replication inhibitors. In SGIV-infected grouper, Epinephulus coioides, most of the viral genes were expressed between 1 and 4 d p.i., and the number and expression levels started to decrease after 5 d p.i. These data were confirmed by real-time RT-PCR. This study provides an experimental basis for investigation of virus-host interactions and the development of control strategies against SGIV infection.

Original languageEnglish (US)
Pages (from-to)39-48
Number of pages10
Issue number1
StatePublished - Jul 20 2008
Externally publishedYes



  • Expression pattern
  • Grouper
  • SGIV
  • Temporal kinetic class
  • Transcriptional profiles
  • cDNA microarrays

ASJC Scopus subject areas

  • Virology

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