Fig. 4

Fatty acid profiles of P. tricornutum during the two-stage treatment. A Heatmap shows the log2(fold change) values of individual fatty acids. B Fatty acid relative abundance in lipids of day 3 cultures for CT, HL, HLC and HLR. FA, fatty acid. The significant difference is designated by * (p < 0.05) or ** (p < 0.01) under Student’s t-test