Figure 2. Root growth phenotype of WT and m123-1 mutant seedlings grown on different N media. (A) Plants were grown on control (30 mM) N medium for 6 days and then transferred to 30 mM or 0.3 mM N-containing medium. Photographs were taken 4 days after transfer, and root length was measured. Scale bar=1 cm. (B and C) Primary root length (B) and average lateral root length (C) of seedlings depicted in (A). Results represent mean±SD (n=8). Different letters indicate significant differences (two-way ANOVA and Tukey’s HSD test; p<0.05).
