S. No | Name of the protein | Type | Reference |
1 | NAXT1 | Nitrate efflux only | [246] |
2 | NRT1.1 | Bidirectional nitrate transporter | [400] |
3 | NRT1.4 | Bidirectional nitrate transporter | [400] |
4 | NRT1.5 | Bidirectional nitrate transporter | [245] |