+, upregulation; −, downregulation; upward red arrows, high activity. Abbreviations: 3-PGA, Glycerate 3-phosphate; ACAs, Calcium-transporting ATPase; AP2-EREBP, AP2-like ethylene-responsive transcription factor; APX, Ascorbate peroxidase bHLH, Helix-loop-helix transcription factor family bZIP, Basic leucine zipper transcription factor family; CAT, Catalase; CAX2, Vacuolar cation/proton exchanger2; CNGCs, Cyclic nucleotide-gated ion channels; CPKs, Calcium-dependent protein kinases; DREBs, Dehydration-responsive element-binding proteins; FBA, Fructose-bisphosphate aldolase; GAPDH, Glyceraldehyde-3-phosphate dehydrogenase; GLR, Glutamate receptor; GPCRs, G-protein coupled receptors; GPX, Glutathione peroxidase; GSA/P5C, Glutamate-1-semialdehyde 2,1-aminomutase/Pyrroline-5-carboxylate; HKT1, Sodium transporter HKT1; IP3, Inositol 1,4,5-trisphosphate; KCO6, Two-pore potassium channel 3; KEAs, K+ efflux antiporters; MDH, Malate dehydrogenase; NAC, NAC domain-containing proteins; OAT, Ornithine aminotransferase; P5CR, Pyrroline-5-carboxylate reductase; P5CS, Pyrroline-5-carboxylate synthase; PHT1.4, Inorganic phosphate transporter 1-4; PLC2, Phosphoinositide phospholipase C 2; PO, Proline oxidase; PtdinsS1, phosphatidylinositol synthase; Rubisco, Ribulose bisphosphate carboxylase; RuBP, Ribose 1,5-bisphosphate; SAM, S-adenosylmethionine; SAMS, S-adenosylmethionine synthetase; SDH, Succinate dehydrogenase; SOD, superoxide dismutase; SOD1, Cu/Zn superoxide dismutase; SOD2, Mn-superoxide dismutase; TIM, Triosephosphate isomerase; V-ATPase, V-type proton ATPase; WRKY, WRKY transcription factor.