TABLE 1.
Various nitrogen transporters involved in different functions of nitrate uptake, utilization, and remobilization.
| Sr. no. | N transporters | Function/s | References |
| (1) | NPF2.7/NAXT1 | Root efflux | O’Brien et al., 2016 |
| (2) | AMT1;1, AMT2;1, NPF6.2/NRT1.4, LHT1 | Leaf import | Noguero and Lacombe, 2016 |
| (3) | NPF2.12/NRT1.6, UmamiT11, UmamiT14 | Phloem unloading, and senescing | Noguero and Lacombe, 2016 |
| (4) | NRT2.7 | Seed vacuole | O’Brien et al., 2016 |
| (5) | NPF7.2/NRT1.8, NPF6.2/NRT1.4, NPF1.2/NRT1.11, NPF1.1/NRT1.12, AAP6, AAP2 | Xylem and phloem transfer | Fan et al., 2017 |
| (6) | CLCa, AVT3a | Leaf vacuole | Tegeder and Masclaux-Daubresse, 2018 |
| (7) | DiT2 | Chloroplast | Tegeder and Masclaux-Daubresse, 2018 |
| (8) | NPF2.13/NRT1.7, NPF1.2/NRT1.11, NPF1.1/NRT1.12, NRT2.4 NRT2.5, UmamiT18 AAP8 | Leaf export and phloem loading | Zhang et al., 2018 |
| (9) | NPF5.5, UmamiT28, UmamiT29, CAT6, AAP8, AAP1 | Loading to seed | Tegeder and Masclaux-Daubresse, 2018 |
| (10) | AMT1.1, AMT1.2, AMT1.3, AMT1.5, NRT2.1, NRT2.2, NRT2.4, NRT2.5, NPF6.3/NRT1.1, NPF4.6/NRT1.2, AAP1, AAP5, LTH1, LTH6, ProT2, ANR1 | Nitrogen uptake | Tegeder and Masclaux-Daubresse, 2018 |
| (11) | NPF7.3/NRT1.5, NPF2.3, UmamiT14, UmamiT18, UPS1-1, UPS1-2 | Movement from root nodule to xylem | Tegeder and Masclaux-Daubresse, 2018 |
| (12) | NPF7.2/NRT1.8, NPF2.9/NRT1.9 | Root reimport | Fiaz et al., 2021 |