Fig 4.

The percentage of genes differentially expressed at various α levels for each compartment of the Pocillopora damicornis–Symbiodinium endosymbiosis. When looking at the expression of genes that were transcribed only by the high-temperature samples and expressed at significantly different levels between temperatures (repeated-measures anova, P < 0.01), the percentage of differentially expressed genes (‘% DEGs’) has been calculated for the Symbiodinium (hollow squares; #Symbiodinium DEGs/total Symbiodinium contig count × 100) and host coral (black diamonds; host coral DEGs/total host coral contig count × 100) compartments at a variety of α levels. Two-sample proportion tests were used to determine whether there were differences between the respective % DEGs of each compartment at each α level across the two temperature treatments (a) (data pooled across sampling times), as well as between treatments in the 2-week sampling period only (b), and between treatments in the 36-week sampling time only (c). The actual numbers of DEGs have been placed next to to certain icons, and asterisks (‘*’) denote significant differences (two-sample proportion test, P < 0.01) in % DEGs between compartments within each α level of each panel.