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. 2014 Sep 30;111(41):14953–14958. doi: 10.1073/pnas.1404680111

Fig. 3.

Fig. 3.

SPX1 and SPX2 have redundancy on repressing the Pi concentration and Pi signaling. Shoot cellular Pi concentrations (A) and relative expression of IPS1 and PT2 (B) of 15-d-old WT, phr2, spx1, spx2, spx1spx2, and phr2spx1spx2 plants in Pi-sufficient conditions (+P, 200 μM Pi). Shoot cellular Pi concentrations (C) and relative expression of IPS1 and PT2 (D) of 15-d-old WT, OxPHR2, OxSPX1, OxSPX2, OxPHR2/OxSPX1, and OxPHR2/OxSPX2 plants in Pi-sufficient conditions (+P, 200 μM Pi). Data show mean + SD (n = 5 for A and C, n = 3 for B and D). FW, fresh weight. Data that differ significantly from the corresponding controls are indicated (plants vs. WT: *P < 0.05, **P < 0.01; triple mutant vs. the spx1spx2 double mutant: ++P < 0.01; Student t test).