Fig. 3

Global analysis of transcriptomes and DEGs. a Pearson correlation coefficients for transcriptomes between each two samples. b Principal component analysis (PCA) of the six transcriptomes. X and Y axes represent the contributor rate of first and second component, respectively. c The distribution of gene expression levels in each sample. d Volcano plot of DEGs. Red, blue and gray points represent up-regulated, down-regulated, and non-regulated DEGs, respectively. e Heat map showing the expression level (log₁₀ transformed FPKM value) of DEGs in different samples. f KEGG pathway functional enrichment result for DEGs. Red and blue columns represent up-regulated and down-regulated DEGs, respectively. g Functional categories of DEGs with manual curation