Mycorrhizal networks, defined as a common mycorrhizal mycelium linking the roots of at
least two plants, occur in all major terrestrial ecosystems. This review discusses the recent
progress and challenges in our understanding of the characteristics, functions, ecology and
models of mycorrhizal networks, with the goal of encouraging future research to improve our
understanding of their ecology, adaptability and evolution. We focus on four themes in the
recent literature:(1) the physical, physiological and molecular evidence for the existence of …