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AtPRP3 expression is altered in root hair mutant backgrounds. Seedlings containing an AtPRP3/GUS construct in root hair mutant backgrounds were grown for 3 d and stained for GUS activity: a and b, Columbia; c and d, ttg; e, gl2; f, rhd6; g and h, 35S-R. Cell-file-specific AtPRP3/GUS expression is shown in b, d, and h, with h representing an example of leaky AtPRP3/GUS expression corresponding to the formation of a few root hairs.
