3 concepts
Nitrogen Fixation: Root and Bacteria Interactions
Plants cannot extract the necessary nitrogen from soil, so they form symbiotic relationships with rhizobia that can fix it as ammonia.
Mycorrhizae: The Symbiotic Relationship between Fungi and Roots
Many plants form associations called mycorrhizae with fungi that give them access to nutrients in the soil, protecting against disease and toxicities.
Nutrients from Other Sources
Many species of plants are unable to make their food via photosynthesis and must acquire nutrients in a variety of additional ways.