Fig. 4

SAPK2 affects seedling growth and root development under N deprivation. a-e Statistical analysis of shoot length (a), root length (b), dry weight of shoot (c), dry weight of root (d) and root number (e) among WT, sapk2 mutant lines and OE lines under N-deprived conditions. f Phenotypic analysis of seedlings at 31 DAG among WT, sapk2 mutant lines and OE lines under N-deprived conditions. Data in a-e are shown as means ± SD (n = 20) from three replicates. A student’s t-test was used to generate P values; “**” indicate significance at P < 0.01