Elongation kinetics of hypocotyl segments. The segments were transferred to Mock or 1 µM cvxIAA; the images were taken with an interval of 10 min. Mean + s.d., n = 11 (TIR1-Mock), n = 9 (TIR1-cvxIAA), n = 12 (ccvTIR1-Mock and cvxIAA), n = 13 (ccvTIR1 ACm1 -Mock), n = 12 (ccvTIR1 ACm1 -cvxIAA), n = 14 (ccvTIR1 ACm3 -Mock) and n = 13 (ccvTIR1 ACm3 -cvxIAA) hypocotyl segments. The statistical analysis is showed in the Source Data . Two independent technically replicates showed similar results.