Figure 4From: Interaction of phenanthrene and potassium uptake by wheat roots: a mechanistic modelK+-dependent plasma membrane H+-ATPase activity. Phenanthrene concentration was 5.62 μM. K+ varied from 0 to 12 mM. Data points represent mean and SD values of triplicates. Error bars do not extend outside all data points. Pi, inorganic P.Back to article page