Fig. 4.

Relative expression changes of five selected kiwifruit genes in response to propylene treatments during late maturation and Phase 1 ripening. Fruit were harvested from 140-224 days after full bloom (DAFB) and left in air or treated with 10,000 μL.L^-1 propylene (P-10000) for 1 day. Expression was determined at harvest, and 1 day and 3 days after harvest (DAH) using gene-specific primers for a. CBP: CHLOROPHYLL BINDING PROTEIN (FG05168), associated with colour change; b. PE: PECTIN ESTERASE (Achn064451) and c. EXP: EXPANSIN (FG442832), both associated with softening and d. β-AM: β-AMYLASE (Achn387071) and e. SUSA: SUCROSE SYNTHASE (Achn024141), both associated with sugar metabolism. Mean expression values are given relative to AcACTIN, using two independent biological replicates repeated four times. Arrows show periods where expression is repressed