Fig. 2

Density curve, hierarchical cluster heatmap, and Principal component analysis (PCA) of Planomicrobium-AX6 transcriptome data, exposed to hydrogen peroxide for 4 h under H₂O₂ (1.5 mM). A Density curve. The probability density distribution of the expression of all genes was log.²FPKM, the peak of the density curve represents the region where the gene expression of the entire sample is most concentrated. Each color in the figure represents a sample, and the sum of all probabilities is 1. B Hierarchical cluster heatmap. The correlation analysis between samples, the closer the correlation coefficient is to 1, the higher the similarity between samples. According to the quantitative results of FPKM, I calculated the correlation between all the samples. C Principal component analysis (PCA). The PCA demonstrates of expressed genes (FPKM ≥ 0.01) a clear separation (Axis 1) of AX6 vs.CK treatment. CK designate RNA sample replicates obtained from Planomicrobium-AX6 without H₂O₂ (1.5 mM) for 4 h, whereas AX6 is RNA sample replicates obtained from Planomicrobium-AX6 with H₂O₂ (1.5 mM) for 4 h. CK1-3 control; AX1-3 treatments, n = 3