Fig. 7.

Response of plant water flux at different soil water potentials to changes in ${\tau }_{\text{root, transp}}$ (A, D), ${\tau }_{{\text{g}}_s\text{, ABA}}$ (B, E) and ${\tau }_{{\text{g}}_s\text{, }{\psi }_{\text{leaf}}}$ (C, F). Row 1 represents low evaporative conditions (2.4 mg per plant s⁻¹), and row 2 represents high evaporative conditions (6 mg per plant s⁻¹). The colour gradient from purple to red represents increasing absolute value of the tested parameters, 10–210 % of the default value (median value in the legend). One extra simulation (dark red points and lines), 10 times the default value was added for both ${\tau }_{{\text{g}}_s\text{, ABA}}$ and ${\tau }_{{\text{g}}_s\text{, }{\psi }_{\text{leaf}}}\text{}.$