Fig. 6

Protein-protein interaction networks of differentially abundant chloroplast proteins (DACPs) of wheat seedlings treated with 100 mg L^− 1 ALA without distilled water (D + A) compared to that treated by drought stress alone. Proteins are indicated with nodes, and interactions between proteins are represented by edges. The edge colors indicate the combined score. The node colors represent upregulated protein (red) or downregulated protein (blue), and the size of node also indicates the change in the level of protein expression. Nad4, NADH-ubiquinone oxidoreductase chain 4; NdhK, NAD(P)H-quinone oxidoreductase subunit K; RpoA, DNA-directed RNA polymerase subunit alpha; RbcL, Ribulose bisphosphate carboxylase large chain; RbcS, Ribulose bisphosphate carboxylase small chain; Cu/Zn-SOD, superoxide dismutase Cu/Zn isoform; Gaps, glyceraldehyde-3-phosphate dehydrogenase