Fig. S5.

Normalized expelled volume of water as function of the bending deformation (the maximal deformation at the center of the branch in a four-point bending setup) on five tree species [computed from the raw data of Lopez et al., 2014 (23)]. The best quadratic fit of the data gives $\mathrm{\Delta }{V}_c/V_c=(2.90\pm 0.25)\times {\epsilon }_B^2$ ($R^2=0.68$).