Fig. 4

Expression of genes involved in the auxin pathway during callus-inducing medium (CIM)-mediated callus formation. The expression levels were visualised by using OmicStudio tools at https://www.omicstudio.cn/tool based on RNA-seq datasets (Additional file 4). Numbers beneath the heat map indicate the relative expression intensities, and the higher expression intensities are indicated by more reddish colours. Genes are grouped by auxin response, biosynthesis, and transport genes. Note that only genes with FPKM > 1 are shown