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Effect of GAs on the phenotype of auxin-related mutants. A, Long hypocotyl of light-grown yucca mutants was reduced by paclobutrazol treatment. Wild-type and yucca seedlings were grown in different concentrations of paclobutrazol for 7 d. Measurements are average of 10 to 15 seedlings ± sd per treatment. B, Expression level of CAB2 in 7-d-old seedlings grown in darkness. C, Expression level of RbcS in 7-d-old seedlings grown in darkness.
