Fig. 2

dar-1 acts in the root to control nodule number. Nodule counts on grafted plants 21 days after inoculation with Sinorhizobium medicae ABS7. Grafted plants with dar-1 roots nodulated significantly more than wild type self-grafts, while plants with dar-1 only in the shoots were similar to wild type (ANOVA p = 3.28 × 10–07, different letters denote significant differences (p < 0.05) in pairwise comparisons using Tukey’s HSD test; n = 7 to 12 plants per grafting combination)