Fig. 7

Responses of OsPHR3 expression and lateral roots development in osphr3 under H/L NO₃⁻ are Pi-independent. Seeds of the WT and mutants (osphr3–1 and 3–2) were grown hydroponically in media comprising H NO₃⁻ + P, H NO₃⁻ -P, L NO₃⁻ + P and L NO₃⁻ -P for 10 d. a The relative expression level of OsPHR3 under different NO₃⁻ and Pi conditions. b Phenotype of primordia in 2–4 cm region from the tip of seminal root. d Seedlings showing lateral roots phenotype. Data are presented for (c )number of lateral root primordia, (e) average length and (f) density of lateral roots in 2–4 cm region from the tip of seminal root. Values are means ±SE (n = 10) and different letters on the histograms indicate that the values differ significantly (P < 0.05, one-way ANOVA)