Fig. 4

a Changes in ethylene production during WT and PslTIR1–fruit development; early-immature green (EIM), immature green (IMG), mature green (MG), breaker (BR), orange (OR), early red (ER), red (R), red-ripe (RR). b Transcript accumulation of selected tomato genes involved in defining ethylene production levels and fruit ripening was assessed in red WT and PslTIR1–fruit treated or not with auxin. The y-axis in (a) represents the changes in ethylene levels (nl g^-1 h^-1). Statistically significant differences from WT (control) are indicated by (**) for the probability levels (P < 0.01). Other details as in Fig. 1