Figure 2: Rapid primary root growth arrest under −Pi.
From: Low phosphate activates STOP1-ALMT1 to rapidly inhibit root cell elongation
(a) Scheme depicting the Δ primary root length measured in seedlings transferred from a +Pi plate to a +Pi or −Pi medium. (b) Time course of the Δ primary root length of WT seedlings transferred to +Pi or −Pi medium. Inset shows magnification of the first time points. Three independent experiments were performed with consistent results and one representative experiment is shown (mean±s.e.m., n=10 seedlings per condition; two-way ANOVA, multiple comparisons; ****P<0.0001). (c) Time course of the Δ primary root length of WT and mutant seedlings transferred to −Pi. Two independent experiments were performed with consistent results and one representative experiment is shown (mean±s.e.m., n=8–10 seedlings per line and condition; two-way ANOVA, multiple comparisons; ****P<0.0001). (d) Seven-day-old seedlings of the indicated genotype were transferred to +Pi or −Pi medium for 24 h before measuring the final length of root epidermal cells (median±interquartile; Tukey whiskers; Mann–Whitney test: ****P<0.0001; n, number of cells).
