Ecological and functional roles of mycorrhizas in semi-arid ecosystems of Southeast Spain

► Semi-arid ecosystem disturbance decreases diversity of mycorrhizal (M) populations. ► Native drought-adapted M fungi have been selected for inoculation purposes. ► Using plant species from natural succession is fundamental for M inoculation success. ► M inoculation improves plant cover and soil quality recovery in degraded areas. ► M fungi propel processes governing community dynamics in Semi-arid ecosystems.