Fig. 4
The DEGs involved in photosynthesis. Leaves from maize with added γ-PGA under drought stress were collected for RNA sequencing. Absolute values of log2 (CK+ γ-PGA/CK) ≥1 and FDR < 0.001 were used as the criteria for DEGs. The color of the box represents up-(red) and downregulated (green)- (CK+ γ-PGA/CK) genes, and the value in the box is the log2 (CK+ γ-PGA/CK) of the genes in the leaves (CK+ γ-PGA/CK) under drought stress. The photosynthesis pathway was identified via KEGG (http://www.genome.jp/kegg/)