Underground fungal networks come into 3D view without disturbing plant roots

Symbioses between plants and fungi are essential for most plants. Fungal structures known as mycorrhizae extend the area from which plants can draw water and nutrients from the soil. In return, plants supply the fungi with carbohydrates produced through photosynthesis. Although the importance of this symbiosis has been known for decades, researchers have not previously been able to study the underground network in its natural structure.