Fig. 3.

Effect of altered ethylene presence and mutated background on AtPRPL1 expression. (a) GUS activity is seen in the trichoblast cell files of a mock-treated root. (b) Treatment with the ethylene precursor ACC induces ectopic root hair formation and concomitant extra AtPRPL1 expression. (c) AVG-inhibited ethylene production interferes with root hair initiation/formation and reduces AtPRPL1 expression. (d, e) Both ethylene effects are mimicked in the eto2 and ein2-1 backgrounds. Scale bars are 100 μm.