Fig. 7. Ethylene-insensitive responses of mine roots are restored by IAA, but not by Trp.

(A) Growth inhibition of 4-d-old etiolated WT, mine, wei2/asa1, and wei8/taa1 roots grown in MS plates only (control; blue), or MS plates supplemented with Trp (10 μM; orange) only, ACC (10 μM; purple) only, or ACC+Trp (10 μM; yellow). (B) Root growth inhibition of WT, mine, wei2/asa1, and wei8/taa1 seedlings grown in MS plates only (control; blue), or MS plates with IAA (10 nM; red) only, ACC (10 μM; purple) only, or ACC+IAA (10 nM; green). Error bars indicate ±SD from three biological replicates. Asterisks indicate statistically significant differences compared to WT, as determined by Student’s t-test (*P < 0.05, **P < 0.01, and ***P < 0.001; ns: statistically not significant).