Phosphorus deficiencies invoke optimal allocation of exoenzymes by ectomycorrhizas.

However, APD activity had a highly significant ( p = 0.002, adj.

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There were no significant changes in exoenzyme activity with soil N availability (as soil C:N ratio) over the podzolization gradient, but APD and β-GU showed a positive trend with soil N:P t (Table 3 and Fig. 1b ).

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