The nitrogen-fixing bacteria are found in the roots of legumes in special structures called root nodules.
- Legume nitrogen fixation starts with the formation of a nodule.
- Leguminous plants belong to the family Fabaceae.
- These plants have a symbiotic association with the soil bacteria called the Rhizobium, which lives in their roots, forming root nodules and fixing atmospheric nitrogen into the nitrates and nitrites for the plants and the plants provide nutrition to the bacteria.
- Rhizobium is the nitrogen-fixing bacteria living in symbiotic association with leguminous plants.