Fig. 5From: Cold stress tolerance of the intertidal red alga Neoporphyra haitanensisThe heatmap of fatty acid desaturase genes of Neoporphyra haitanensis when subjected to cold stress. Thalli were cultured at − 4, 4, 10 and 20 °C for 1 day (T-4D1, T4D1, T10D1 and T20D1). FPKM values of genes in different groups were used to construct the heatmap after a z-score normalization (n = 3)Back to article page