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Dark-grown cul1-6 seedlings show reduced gravitropic response. Wild-type (wt), cul1-6, and axr6-3 seedlings were grown in the dark, 20 μm m−2 s−1 R, or 0.32 μm m−2 s−1 FR light for 6 d. A, Representative phenotypes of wt, cul11-6, and axr6-3 seedlings grown in the dark, R, or FR light. B, Chart showing percentage of negatively gravitropic hypocotyls in wt, cul1-6, axr6-3 seedlings. n = 180; error bars ± se. [See online article for color version of this figure.]
