Figure 7.

Overexpression of the lincRNAs NPC48 and NPC72 affects primary root growth. A, Mean primary root length according to genotype and Pi condition at the age of 11 d after sowing (n ≥ 23; for details, see Supplemental Table S6). B, Representative pictures of roots of each genotype 11 d after sowing under high-Pi conditions. Scale bar = 1 cm. C, Expression levels of NPC48 and NPC72 in roots of 11-d-old plants grown under high-Pi conditions in lines deregulated in NPC48 or NPC72 and mutants affected in Pi-related root arrest. Measurements represent the log 2-fold changes (FC) compared to Col (n ≥ 4; for details, see Supplemental Table S5). Measurements represent corrected means of primary root growth (A) or of the fold change compared to Col (C). Error bars represent the se. Results were analyzed by two-way ANOVA (A) or one-way ANOVA (C) followed by Tukey’s HSD mean-separation test. Lowercase letters indicate statistical difference among groups (P ≤ 0.05).