Fig 1. YUC regulates Al stress regulated root growth inhibition.

(A, B) Root growth of WT and yuc mutant seedlings after a seven-day exposure to 0 or 6 μM AlCl₃. Three independent experiments were done, each with three replicates. Plants were grown at 22°C in long-day growth conditions. Bar = 1 cm. (C) Root growth of WT (DR5rev:GFP) and yucQ/DR5rev:GFP plants after a seven-day exposure of 0 to 6 μM AlCl₃. (D) Effect on the Al-induced inhibition of root growth of WT by addition the YUC inhibitor yucasin. Root growth measured after a seven-day exposure to 0 or 6 μM AlCl₃ in the presence of 0 to 10 μM yucasin. Three independent experiments were done, each with three replicates. Error bars represent Student’s t test confidence intervals (n = 9). Statistical difference from expected indicated by asterisks (Fisher’s exact test, **P < 0.01, ***P < 0.005).