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Effects of T. virens inoculation on auxin-regulated gene expression. Twelve-hour GUS staining of DR5:uidA primary roots of Arabidopsis seedlings grown for 4 d on agar-solidified 0.2× MS medium. A to C, Uninoculated seedlings. D to F, T. virens-inoculated seedlings. Photographs show representative individuals of at least 20 stained seedlings. The experiment was repeated twice with similar results. Bars = 100 μm. [See online article for color version of this figure.]
