The biosynthesis and metabolism of sucrose and starch in <i>A</i>. <i>chinensis</i> ‘Hongyang’ during fruit development.

<p>(<b>A)</b> The content of soluble sugar (% of fwt), starch (mg/g) and total soluble solids (% of fwt) during kiwifruit development. Values are means of ten replicates. Bars indicate ± SE. (<b>B)</b> Candidate transcripts putatively involved in the biosynthesis and metabolism of sucrose and <b>(C)</b> starch. Inserted bar graphs show expression levels for each candidate gene in any one class across the seven fruit developmental stages, from left (S1) to right (S7), and rows represent each candidate gene. The Y axis represents the transcript value of RPKM. SPS: sucrose-6-P synthase, SPP: sucrose-6F-phosphate phosphohydrolase, SUT: sucrose transporter, SuSy: sucrose synthase, A/NI: sucrose alkaline/ neutral invertase, FK: fructose kinase, HK: Hexokinase, AGPase: ADP-glucose pyrophosphorylase, SS: starch synthase, SBE: starch branching enzyme, SP: starch phosphorylase, AM: α-amylase, BM: β-amylase, GWD: α-glucan water dikinase, GT: 4-α-glucanotransferase. The dashed arrow represents enzymatic steps yet to be identified.