Review: Arbuscular mycorrhizas as key players in sustainable plant phosphorus acquisition: An overview on the mechanisms involved

•Arbuscular mycorrhiza is a sustainable strategy to increase plant Pi uptake.•Mycorrhizal plants have Pi uptake pathways.•The mycorrhizal Pi uptake pathway can dominate plant Pi uptake.•Symbiotic Pi transport is mediated by mycorrhiza-specific Pi transporters.•Pi acts as a signal in the symbiosis.