| GABA | γ-Aminobutyric acid |
| Fe | Iron |
| GAD | Glutamate decarboxylase |
| IRT | Iron-regulated transporters |
| MA | Mugineic acid |
| YSL | Yellow stripe/yellow stripe 1-like |
| NAS | Nicotianamine synthase |
| NAAT | Nicotianamine aminotransferase |
| DMAS | Deoxymugineic acid synthase |
| DMA | Deoxymugineic acid |
| RNA-seq | RNA sequencing |
| DEGs | Differentially expressed genes |
| FS | Fe-sufficiency |
| FSG | with GABA under Fe-sufficient conditions |
| FD | Fe-deficiency |
| FDG | with GABA under Fe-deficient conditions |