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The tolerance to, and degradation of m‐toluate by Scots pine (Pinus sylvestris), a symbiotic mycorrhizal fungus (Suillus bovinus) and Pseudomonas fluorescens strains, with or without m‐toluate‐degrading capacity, was determined individually and in all symbiotic/associative plant‐microbe combinations. Fungal survival on medium with m‐toluate was increased in co‐culture with the degradative bacterial strains on agar plates (up to 0·02%, w/v). When fungi were grown in mycorrhizal association with Scots pine seedlings in test‐tube microcosms containing expanded clay pellets and growth media, the fungus was able to withstand m‐toluate concentrations up to 2·0%, w/v in all treatments. The seedling tolerance remained unaltered regardless of the presence or absence of mycorrhizal fungi or biodegradative bacteria. Reduction in m‐toluate levels was only detected in treatments inoculated with bacterial …