Microarray-Based Identification of Gonad Transcripts Differentially Expressed Between Lines of Pacific Oyster Selected to Be Resistant or Susceptible to Summer Mortality

Summer mortality of the Pacific oyster Crassostrea gigas is the result of a complex interaction between oysters, their environment, and pathogens. Heredity appears to be a major factor determining the sensitivity of oysters to summer mortality, allowing resistant (R) and susceptible (S) lines to be produced. We conducted genome-wide expression profiling of R and S gonads during the 3-month period preceding a summer mortality event, using a cDNA microarray that we designed. ANOVA analysis revealed that 34 genes were differentially expressed between R and S lines on four dates preceding the mortality event. Annotation of some of these genes highlights reproduction and its allocation and antioxidant defenses as the main pathways that operate differentially between R and S lines. This transcriptional analysis provides new indications to define markers for quantitative trait loci searches and functional studies and evaluate the potential role of each gene in the resistance to summer mortality.

Keyword(s)

Mollusca, Bivalvia, Gene expression, cDNA microarrays, Reproduction, Oxidative stress, Energy metabolism

Full Text

FilePagesSizeAccess
Publisher's official version
14328 Ko
Author's final draft
23234 Ko
How to cite
Fleury Elodie, Moal Jeanne, Boulo Viviane, Daniel Jean-Yves, Mazurais David, Henaut Alain, Corporeau Charlotte, Boudry Pierre, Favrel Pascal, Huvet Arnaud (2010). Microarray-Based Identification of Gonad Transcripts Differentially Expressed Between Lines of Pacific Oyster Selected to Be Resistant or Susceptible to Summer Mortality. Marine Biotechnology. 12 (3). 326-339. https://doi.org/10.1007/s10126-009-9227-9, https://archimer.ifremer.fr/doc/00005/11590/

Copy this text