Fig 1.
Effects of ABA and NDGA applications on tomato ripening-related physiological indexes during storage at 20°C.
(a) The changes of a* value. (b) The changes of fruit firmness (kN). (c) The changes of total carotenoid content during tomato ripening. (d) The changes of chlorophyll content. (e) The changes of lycopene content. (f) The changes of β-carotenoid content. Error bars represented SE of three biological replicates, and asterisks (*) indicates significant difference (P<0.05) between the value in ABA treatment group or NDGA treatment group and that in CK (control).
Fig 2.
Analysis of DEGs involved in the pathway of carotenoid biosynthesis and chlorophyll degradation.
(a) Schematic diagram of carotenoid biosynthesis (modified from the reference [78]) and the expression profile of 13 DEGs encoding key enzymes in the pathway. (b) Schematic diagram of chlorophyll degradation pathway (referred to reference [78]). The expression profile of 2 DEGs encoding key enzymes in chlorophyll degradation. Analysis of the transcriptional profiles of the relative gene expression values (Z scores) was performed using the heatmap command, Red and green color represent up-regulated and down-regulated genes, respectively. Abbreviations are listed in Supplemental S19 Table.
Fig 3.
Analysis of DEGs involved in the pathway of flavonoids biosynthesis.
(a) Schematic diagram of flavonoids biosynthesis (modified from the reference [49]). (b) The expression profile of 16 DEGs encoding key enzymes in the pathway. Abbreviations are listed in Supplemental S19 Table.
Fig 4.
Analysis of DEGs involved in the pathway of ROS-scavenging and photosynthesis, respectively.
(a) Expression profiling of DEGs involved in antioxidant system. Green bar, SODs; yellow bar, CATs; blue bar, genes encoding enzymes of GSH-ASA cycle; pink bar, genes encoding enzymes of GPX pathway; purple bar, genes encoding enzymes of PrxR/TrX pathway. (b) Expression profiling of DEGs encoding key enzymes in different steps of photosynthesis.