Figure 2
Dynamic change of total fatty acid pools. (A) Principal components analysis (PCA) of fatty acid (FA) moieties in the total lipid pools of the three cellular compartments of the Euphyllia glabrescens-Symbiodinium endosymbiosis- host coral gastrodermal cells (“Host,” cubes), lipid bodies (“LB,” spheres), and in hospite Symbiodinium (“Sym,” tetrahedrons)- across the diel cycle. The PCA bi-plots of individual compartments (B) host, (C) LB, and (D) Sym were included to identify the FAs that contributed most to the variation across the diel cycle. In panels (B), (C) and (D), the red arrows indicate the light period (1: sunrise [blue] and 2: noon [yellow]), and black arrows indicate the dark period (3: sunset [orange] and 4: midnight [gray]).
