Mycorrhizal Symbiosis, Volume 120 highlights new advances in the field, with this new volume presenting interesting chapters on a variety of topics, including Molecular regulation and host-control of Arbuscular Mycorrhizal Symbiosis, Plant-AM fungus communication: key role of nutrition in cry for help signals, Nutrient exchange in mycorrhizal symbiosis, Biotechnological solutions based on mycorrhizae for the improvement of plants against abiotic stress, Mycorrhizae and plant responses to salinity, Mycorrhizal symbiosis regulating plant-biotic interactions, Nutritional quality of mycorrhizal crops: current and future challenges from a One Health perspective, The Role of Arbuscular Mycorrhizal Fungi in Fruit Trees and the Challenges of Their Application, and much more. Additional sections cover Mycorrhizal fungi: key to the functionality and conservation of native forests in southern Chile and Applications of mycorrhizae in ecological restoration. It offers up to date findings on mycorrhizal symbiosis. It has both fundamental and applied aspects Each chapter is writing by recognized experts on the field