Figure 1.

eATP restores root hair growth of GSH-treated Arabidopsis seedlings in darkness. (A) Representative 5-d-old seedlings (Arabidopsis thaliana ecotype Col 0) grown vertically in the absence or presence of 1 mM AT P, 1.5 mM GSH, GSH + ATP in darkness. (B) Measurement of root hair number of etiolated seedlings grown in the absence or presence of 1 mM ATP, 1.5 mM GSH, GSH + ATP, 1 mM cPTIO, 50 µM PPAD S. Combinatorial treatments are indicated. Data are means (±SD) of at least three independent experiments.