Figure 4.

Effect of RDX concentration on transcript expression in the coral and zooxanthellae. The pie chart labelled “Total” provides the percent of the total suite of transcripts that had significant differential expression summed across coral, algal symbionts, and other (“other”, representing unconfirmed taxonomic classifications). The pie chart labelled “Relative” provides the relative percentage of transcripts that had significant differential expression normalized to the total number of targets present for each taxonomic class on the microarray (See Additional file 2: Table S4 for target distribution on microarray). The bar graphs provide the proportion of significant transcripts that had increased vs decreased expression (totals inset in bars). Binomial tests were used to identify differences in the proportions of transcripts having increased : decreased expression with significant difference (p = 0.05) marked with “*” and tests without sufficient data marked with “nt” representing no test.