Fig. 4. Time course of transcriptional changes of PpACO1, PG, PL, PpExp1, and LIM in peach mesocarp from untreated fruit (C) or fruit treated early with 0.44 mM MJ or 0.20 mM PDJ. Northern blot analysis of total RNA (12 lg per lane) extracted from fruit mesocarp, and relative ethidium bromide-stained loading controls are shown.