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Figure 1.  Plants of 'Predator' and 'Reliant IV' grown under (a) normal temperature (0 d of heat stress), (b) 7 d of heat stress, (c) 14 d of heat stress.

Figure 2.  (a) Leaf chlorophyll (Chl) content, (b) photochemical efficiency (F_v/F_m), and (c) electrolyte leakage (EL) of 'Predator' and 'Reliant IV' in response to heat stress. The error bars represent standard error (SE) for three biological replicates (n = 3).

Figure 3.  Venn diagram illustrating the number of differentially expressed genes (DEGs) that were (a) up-regulated or, (b) down-regulation at 7 d or 14 d of heat stress in comparison to that at 0 d of heat stress (Day 7 vs. Day 0 or Day 14 vs. Day 0) for 'Predator'. The numbers in each circle and overlapping area represent unique and common DEGs between days of heat stress, respectively.

Figure 4.  Venn diagram illustrating the number of differentially expressed genes (DEGs) that were (a) up-regulated or, (b) down-regulation at 7 d or 14 d of heat stress in comparison to that at 0 d of heat stress (Day 7 vs. Day 0 or Day 14 vs. Day 0) for 'Reliant IV'. The numbers in each circle and overlapping area represent unique and common DEGs between days of heat stress, respectively.

Figure 5.  Gene ontology (GO) enrichment analysis of DEGs that were up-regulated at (a) 7 d of heat stress and (b) 14 d of heat stress in 'Predator' and 'Reliant IV'.

Figure 6.  Gene ontology (GO) enrichment analysis of DEGs that were down-regulated at (a) 7 d of heat stress and (b) 14 d of heat stress in 'Predator' and 'Reliant IV'.

Figure 7.  KEGG enrichment analysis of DEGs for (a) 'Predator' and (b) 'Reliant IV' at 7 and 14 d of heat stress in comparison to 0 d of heat stress.

Figure 8.  The heat-upregulated central hub genes and the connecting genes in module (a) MElightcyan and (b) MEdarkmagenta in 'Reliant IV' exposed to 7 and 14 d of heat stress. The genes in the yellow circles represent central hub genes.