Table 1.
Putative localization, tissue expression, and conserved sequence of Pi transporters in Arabidopsis.
| Pi transporter | Putative localization | Tissue expression | Conserved sequence/residue | Reference |
|---|---|---|---|---|
| AtPHT1;1 | Plasma membrane | Roots, hydathodes of cotyledons and leaves, axillary buds, peripheral endosperm of germinating seeds | 142 GGDYPLSATIMSE 154 | Mudge et al., 2002; Nussaume et al., 2011 |
| AtPHT1;2 | Plasma membrane | Roots | 142 GGDYPLSATIMSE 154 | Mudge et al., 2002; Nussaume et al., 2011 |
| AtPHT1;3 | Plasma membrane | Roots | 142 GGDYPLSATIMSE 154 | Mudge et al., 2002; Nussaume et al., 2011 |
| AtPHT1;4 | Plasma membrane | Roots, hydathodes, axillary buds | 142 GGDYPLSATIMSE 154 | Mudge et al., 2002; Nussaume et al., 2011 |
| AtPht1;5 | Plasma membrane | Shoots | 142 GGDYPLSATIMSE 154 | Mudge et al., 2002; Nussaume et al., 2011 |
| AtPht1;6 | Plasma membrane | Flowers, mature pollen grains | 143 GGDYPLSATIMSE 155 | Mudge et al., 2002; Nussaume et al., 2011 |
| AtPHT1;7 | Plasma membrane | Mature pollen grains | 142 GGDYPLSATIMSE 154 | Mudge et al., 2002; Nussaume et al., 2011 |
| AtPHT1;8 | Plasma membrane | Roots | 134 GGDYPLSATIMSE 146 | Mudge et al., 2002; Nussaume et al., 2011 |
| AtPHT1;9 | Plasma membrane | Roots | 135 GGDYPLSATIMSE 147 | Mudge et al., 2002; Nussaume et al., 2011 Remy et al., 2012 |
| AtPHT2;1 | Chloroplast envelope | Shoots | – | Daram et al., 1999; Versaw and Harrison, 2002 |
| AtPHT3;1 | Mitochondrial inner membrane | Roots, rosette leaves, and flowers | Cys | Zhu et al., 2012 |
| AtPHT3;2 | Mitochondrial inner membrane | Leaves | Cys | Zhu et al., 2012 |
| AtPHT3;3 | Mitochondrial inner membrane | Flowers | – | Zhu et al., 2012 |
| AtPHT4;1 | Plastid | Shoots | – | Guo et al., 2008 Guo et al., 2008 Guo et al., 2008 Guo et al., 2008 Guo et al., 2008 Guo et al., 2008 |
| AtPHT4;2 | Plastid | Roots | – | |
| AtPHT4;3 | Plastid | Veins | – | |
| AtPHT4;4 | Plastid | Shoots | – | |
| AtPHT4;5 | Plastid | Veins | – | |
| AtPHT4;6 | Golgi | Whole plants | – | |
| AtPHT5;1 | Tonoplast | Shoots, roots, pollen, and vascular tissues | – | Liu T.Y. et al., 2016 |
| AtPHT5;2 | Tonoplast | Guard cells, vascular tissues and pollen | – | Liu T.Y. et al., 2016 |
| AtPHT5;3 | Tonoplast | Shoots, stele, pollen, and vascular tissues | – | Liu T.Y. et al., 2016 |