Fig. 4
Carbohydrate metabolism during bulblet initiation and development. a: simplified overview of carbohydrate metabolism. b: Heatmap of the expression of DEGs related to carbohydrate metabolism in the indicated groups during bulblet initiation and development, respectively. The color scale corresponds to log2-transformed (fragments per kb per million reads) FPKM values, with red indicating upregulation and blue indicating downregulation. Each row represents a unigene. B0–B30 represent different cDNA libraries obtained from samples collected at different days after treatment. Abbreviations: SUS, sucrose synthase; UGP, UTP-glucose-1-phosphate uridylyltransferase; AGP, glucose-1-phosphate adenylyltransferase; SSS, soluble starch synthase; GBSS, granule-bound starch synthase; SBE, starch branching enzyme; INV, invertase; FRK, fructokinase; PGM, phosphoglucomutase; AMY, alpha-amylase; BMY, beta amylase; ISA, isoamylase.