In nitrogen-poor soils, leguminous plants and rhizobial bacteria engage in a highly intimate symbiotic interaction. Rhizobial bacteria use plant-supplied energy-rich nutrients to convert atmospheric nitrogen into a form that is accessible to the plant host.
This symbiosis involves dramatic changes of root structure which result in the formation of root nodules.
Animation showing first step in the process of root nodule formation.

You may also like

Back to Top