Fig. 5

Hierarchical clustering analysis and proposed fruit cracking regulatory network. a Hierarchical clustering analysis showed the expression profiles of key genes involved in tomato fruit cracking. Based on the Euclidean distance, the minimum linkage method was used for cluster analysis. Boxes of the same colour represent the same gene in CS and CR. The solid dark circles represent genes that showed different expression trends in the two genotypes. b Gene expression cube in total pericarp of tomato during red ripen stage by using Tomato Gene Expression Atlas. c Predicted pathway diagram of fruit cracking in tomato, including hormones, reactive oxygen species, and cell wall polysaccharide metabolism. Solyc09g008720.2, ethylene receptor. Solyc11g042560.2, ethylene-responsive transcription factor. Solyc02g080530.3, peroxide. Solyc07g026650.3, 1-aminocyclopropane-1-carboxylate oxidase 5. Solyc07g055990.3, xyloglucan endotransglucosylase/ hydrolase 7. Solyc12g011030.3, xyloglucan endotransglucosylase/ hydrolase 9. Solyc08g077910.3, expansin. Solyc09g075330.3, pectinase. Solyc10g080210.2, polygalacturonase-2. Solyc09g075330.3, pectinesterase. XLOC_016662, XLOC_010878 and XLOC_033910 are predicted lncRNAs associated with the redox pathway. The dotted line indicates the speculation process