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. 2019 Jul 19;10:946. doi: 10.3389/fpls.2019.00946

FIGURE 10.

FIGURE 10

Hypothesis of a root uptake model of cations: (A) Model for monocropped Fercal and 196.17 rootstocks at high Cu concentrations (i.e., 25 and 50 μM Cu). (B) Model for intercropped Fercal rootstocks in low Cu toxicity (5 μM Cu). (C) Model for intercropped Fercal rootstocks at high Cu toxicity (50 μM Cu). (D) Model for intercropped 196.17 rootstocks in low Cu toxicity (5 μM Cu). (E) Model for intercropped 196.17 rootstock at high Cu toxicity (50 μM Cu). Size of circles represent the estimated ion concentration in the single compartments. The concentrations data used for the development of the model are taken from this work and from Marastoni et al. (2019). Numbers indicate the sequence of events, the rootstock name on the arrows specify that the description is characteristic for the specified rootstock and not for the other.