Fig. 2
a Violin plot of the log Fragments Per Kilobase of transcript sequence per Million base pair-sequenced (FPKM) expression value. The x-axis shows the sample/library names, and the y-axis shows the log10(FPKM + 1). Each violin has five statistical magnitudes (max value, upper quartile, median, lower quartile and min value). In the present experiment, the quartile values are almost identical among the replicates. The violin width shows the gene density. The gene density is higher in DS + PP sample. b The overall results of FPKM cluster analysis, clustered using the log10(FPKM + 1) value. The scatter diagrams demonstrate the correlation coefficient between samples; R2, the square of the Pearson coefficient. In the present experiment, the R2 is 0.918, indicating slight variability among the biological replicates. c Heat maps of the correlation coefficient between samples. Red denotes genes with high expression levels, and blue denotes genes with low expression levels. The color ranges from red to blue represents the log10 (FPKM + 1) value from large to small