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. Author manuscript; available in PMC: 2013 Jul 1.
Published in final edited form as: Plant Mol Biol. 2012 May 12;79(4-5):359–373. doi: 10.1007/s11103-012-9917-y

Fig. 4.

Fig. 4

iaa16-1 displays auxin resistance in root elongation and lateral root initiation. a Mean root lengths (+/− SE; n 9) of 8-d-old Col-0 (Wt), heterozygous iaa16-1 (+/−), homozygous iaa16-1 (−/−), axr2-1, axr3-1, slr-1, and iaa28-1 seedlings grown on media supplemented with ethanol (0 nM IAA) or the IAA concentrations indicated. The ratio of the root length at the highest IAA concentration to the root length in the absence of IAA is expressed as a percentage next to each line. b Mean root lengths (+/− SE; n 13) of 8-d-old Col-0 (Wt), heterozygous iaa16-1 (+/−), homozygous iaa16-1 (−/−), axr2-1, axr3-1, slr-1, and iaa28-1 seedlings grown on medium supplemented with ethanol (0 nM 2,4-D) or the 2,4-D concentrations indicated. The ratio of the root length at the highest 2,4-D concentration to the root length in the absence of 2,4-D is expressed as a percentage next to each line. c iaa16-1 produces fewer lateral roots than wild type. Emerged lateral roots of Col-0 (Wt), heterozygous iaa16-1 (+/−), homozygous iaa16-1 (−/−), axr2-1, axr3-1, slr-1, and iaa28-1 were counted 4 d after transfer of 4-d-old seedlings to media supplemented with either ethanol (Mock), 10 μM IBA, or 80 nM NAA (mean +/− SE; n ≥ 12).