Figure 1.

Transient responses of ion fluxes to Al, measured in the elongation zone. (A) K⁺ fluxes, (B) H⁺ fluxes, (C) Cl⁻ fluxes. Data show the responses collected on ET8 plants (open symbols) and ES8 plants (closed symbols) after the addition of 50 µM Al, as shown. Positive values are defined as influxes, and negative values as effluxes. Error bars are s.e.m. (n = 6–8). (From ref. 23).