Aconitase expression during fruit development. Expression profiles of citrus aconitase genes CCAco1 (A, D, G), CcAco2 (B, E, H) and CCAco3 (C, F, I), during development of fruit flesh from selected varieties of mandarins (A, B, C), oranges (D, E, F) and lemons (G, H, I). Gene expression was determined by real-time RT-PCR. An expression value of 1 was arbitrarily assigned to the mRNA level of each gene in the Clemenules 27 DPA sample. Mean ratios of expression ± SE are presented. Clemenules expression profiles (dotted lines) are included in panels D, E, F, G, H and I as reference.