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Fig. S1 Comparison of exponential decay functions with or without a constant (i.e. two- or one-pool model) fitted to the change in 13C excess of root sugars in < 1 mm diameter roots after pulse labelling.

Fig. S2 Comparison of exponential decay functions with or without a constant (i.e. two- or one-pool model) fitted to the change in 13C excess of root sugars in 1–3 mm diameter roots after pulse labelling.

Fig. S3 Temporal change in 13C excess of fine root sugars, starch and structural carbon (lower panels) after 13CO2 labelling in June and August on a logarithmic y-axis.

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NPH_4120_sm_FigS1-S3.pdf192KSupporting info item