Fungi Influence Non-Native Plant Invasion (IMAGE) USDA Forest Service - Northern Research Station Caption Mycorrhizal fungi are a type of fungi that help trees feed on minerals in the soil and, in turn, feed off sugars in tree roots. New research by a US Forest Service scientist and partners suggests that the type of mycorrhizal fungi dominant in a forest influences vulnerability to non-native plant invasion. Credit Melanie Taylor, U.S. Forest Service Usage Restrictions None License Licensed 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.