a, The shoot fresh weight of WT, nlp7-1, NLP7-GFP/nlp7-1 and NLP7(S205A)-GFP/nlp7-1 shoots. Error bars, s.e.m., n=10 seedlings. **p ≤ 0.0001 versus WT control (one-way ANOVA with Tukey’s multiple comparisons test). Plants were grown on 25 mM KNO3 medium for 21 days. Data of three independent complement lines were presented. b, The root fresh weight of 11-day-old WT, nlp7-1, NLP7-GFP/nlp7-1 and NLP7-S205A-GFP/nlp7-1. Seedlings were germinated on the ammonium succinate medium for 3 days and then transferred to the plates supplemented with 5 mM KNO3 for 8 days. Error bars, s.e.m., n=10 seedlings. **p ≤ 0.0001 versus WT control (one-way ANOVA with Tukey’s multiple comparisons test).