Phosphorus (P) absorbed by the expanding colony is transferred to the host root. P in the fungal-only compartment (purple) decreased, P in the root (orange) increased and P in the root compartment agar (green) remained constant. The total P across all compartments (black) remained constant. The points correspond to individual replicates, shown together with linear fit bootstrapped 95% confidence intervals of fit (solid lines and shading) and mean 2 s.e.m. (dashed lines and shading).
