Clusters of orthologous and paralogous genes families. Predicted peptides from Capsicum annuum, Solanum lycopersicum and Solanum tuberosum were clustered using OrthoMCL . A) Number of clusters (c) and genes (g) for each orthologous (C. annuum–S. lycopersicum-S. tuberosum; C. annuum–S. lycopersicum; C. annuum–S. tuberosum) and paralogous group within C. annuum. B) Numbers of differentially expressed genes (dg) grouped in orthologous clusters (dc) for the all three species, between two species (C. annuum–S. lycopersicum; C. annuum–S. tuberosum) and the paralogous group within C. annuum. The number of C. annuum genes (x) is represented in the intersections of the Venn diagram.