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Predicting the potential for climate change to disrupt host–microbe symbioses requires basic knowledge of the biogeography of these consortia. In plants, fungal symbionts can ameliorate the abiotic stressors that accompany climate warming and thus could influence plants under a changing climate. Forecasting future plant–microbe interactions first requires knowledge of current fungal symbiont distributions, which are poorly resolved relative to the distributions of plants.

We used meta‐analysis to summarize the biogeographic distributions of plant‐fungal symbionts in mountain ecosystems worldwide, because these ecosystems are likely to be among the first to experience climate change‐induced range shifts.

We analysed 374 records from 53 publications to identify general trends, pinpoint areas in need of greater study and develop reporting guidelines to facilitate future syntheses …