Mycorrhizal root (IMAGE) Boyce Thompson Institute Caption Medicago truncatula root colonized with arbuscular mycorrhizal (AM) fungus, Diversispora epigaea. D. epigaea hyphae and arbuscules within the root and also hyphae around the root are visible as green structures (The fungus is stained with a fluorescent lectin conjugate (Alexafluor-488) that stains the fungal cell wall). The central vascular tissue of the root is stained red. Credit Maria J. Harrison, Boyce Thompson Institute Usage Restrictions Credit License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.