Fig. 1

Overview of the transcriptomics of fruit response to cold stress in sensitive (5, 135, 150) and tolerant (47,65, 99) RILs. A Heat map showing the expression of differentially regulated genes (DEGs) among sensitive and tolerant RILs before cold stress. B Heat map showing the expression DEGs among sensitive and tolerant RILs after two hours of exposure. C Heat map showing the expression of 486 DEGs among sensitive and tolerant RILs after twenty-four-hour exposure to cold stress. D Gene ontology (GO) enrichment analysis of 486 DEGs from tomato fruit after twenty-four-hour exposure to cold stress using KOBAS. E The highly expressed 21 genes linked with calcium-mediated signaling among the 486 DEGs are presented. In the heat map, the dark red color denotes the highly up-regulated expression, and the sky-blue color denotes the down-regulated expression. S, cold-sensitive RILs, T, cold tolerant RILs. DEGs analysis was performed with DESeq2 R package (twofold, FDR < 0.05)