Microarray analysis of gene expression in eastern oyster (Crassostrea virginica) reveals a novel combination of antimicrobial and oxidative stress host responses after dermo (Perkinsus marinus) challenge

Shaolin Wang, Eric Peatman, Hong Liu, David Bushek, Susan E. Ford, Huseyin Kucuktas, Jonas Quilang, Ping Li, Richard Wallace, Yongping Wang, Ximing Guo, Zhanjiang Liu

Research output: Contribution to journalArticle

55 Scopus citations

Abstract

Dermo disease, caused by Perkinsus marinus, is one of the most severe diseases of eastern oysters, Crassostrea virginica. It causes serious mortalities in both wild and aquacultured oysters. Using existing expressed sequence tag (EST) resources, we developed a 12K in situ oligonucleotide microarray and used it for the analysis of gene expression profiles of oysters during the interactions between P. marinus and its oyster host. Significant gene expression regulation was found at day 30 post-challenge in the eastern oyster. Putative identities of the differentially expressed genes revealed a set of genes involved in several processes including putative antimicrobial defenses, pathogen recognition and uptake, anti-oxidation and apoptosis. Consistent with results obtained from previous, smaller-scale experiments, expression profiles revealed a large set of genes likely involved in an active mitigating response to oxidative stress and apoptosis induced by P. marinus. Additionally, a unique galectin from C. virginica, CvGal, which serves as a preferential receptor for P. marinus trophozoites, was found to be significantly down-regulated in gill tissue of oysters with both light and heavy infection, suggesting an attempt to control parasite uptake and proliferation in the later stages of infection. Potential histone-derived antimicrobial responses to P. marinus were also revealed in the gene expression profiles.

Original languageEnglish (US)
Pages (from-to)921-929
Number of pages9
JournalFish and Shellfish Immunology
Volume29
Issue number6
DOIs
StatePublished - Dec 2010
Externally publishedYes

Keywords

  • Antimicrobial
  • Dermo
  • Microarray
  • Oxidative stress
  • Oyster

ASJC Scopus subject areas

  • Environmental Chemistry
  • Aquatic Science

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