Correlation between DNA methylation in promoter region and gene expression levels during cold storage. (A) Venn diagram showing overlaps among the total_DMGs in promoter region and total_DEGs. (B) Correlation of methylation and gene expression. Percentage is the number of genes with negative correlation between methylation and transcripts. (C) Numbers and proportions of hyper DMG & down DEG and hypo DMG & up DEG. (D) Heatmap display for correlation between DNA methylation in promoter region and expression levels of gene related to cold tolerance, ethylene synthesis and volatile formation. (E) Correlation between DNA methylation and gene expression levels of PpCBF6, PpCAMTA1, PpFAD8, PpACS1, PpAAT1 and PpMADS2.