Glossary of "Plant Biology (1st ed.)" by Graham et al. (2003)
- Mutually beneficial partnerships between plants and fungi that grow into plant roots; the plants provide organic food and the fungi contribute mineral nutrients obtained from soil.
- Graham, L. E., Graham, J. M. & Wilcox, L. W. 2003. Plant Biology. -xxxv + 497 pp. Pearson Education, Inc., Upper Saddle River.