Fig. 2.

Regulation of coral host and algal symbiont gene expression on day 10 of heat stress. (A–C) Mean gene expression of significantly differentially expressed key genes in the amino acid metabolism of the coral host. (D) Overview of how highlighted metabolic pathways of the coral host and algal symbiont may interact to alter nutrient cycling in the symbiosis. (E–G) Mean gene expression of significant differentially expressed nitrate (NO₃⁻) assimilation key genes of algal symbionts. Blue arrows indicate a significant down-regulation and red arrows indicate a significant up-regulation of gene expression during heat stress. Lines and error bars indicate mean ± SE. TPM = transcripts per million. For a complete list of differentially expressed genes as well as significant Gene Ontology terms see Dataset S1.