Fig. 2. Expression profiles of seven receptacle preferentially expressed (RP) genes chosen for further characterization.

a The botanical fruit of strawberry, the achenes, are externally arranged on the fleshy receptacle. b The fleshy receptacle is made up of two sub-tissues, the cortex and pith. Pith contains mostly vasculature. c The hard, outer shell of the achene is derived from the ovary wall. d Within an achene is a single seed, which houses an embryo (e). f Heatmap showing expression profiles of 7 RP genes across all profiled tissues and stages of development. Black box indicates receptacle tissues. Numbers following the tissue names indicate developmental stage. Each row represents one gene. Gene descriptions were taken from Plaza 3.0. Warmer colors denote higher expression. Log2 transformed reads per kilobase million (RPKM) values were used as input to generate the heatmap. Average RPKM from the two biological replicates of each library are presented