Definitions for "Rhizobia"
The common name for several genera of bacteria which have the ability to infect the root of legumes and to produce root nodules. Each species of rhizobia can infect some but not all legumes.
Microorganisms or bacteria belonging to the genus, Rhizobium, which are commonly involved in fixing nitrogen; normally reside in close relationship (symbiotic) with roots of leguminous plants.
Microorganisms that inhabit nodules on the roots of the members of the bean family. They have the ability to take nitrogen from the air and create nitrogen compounds that the host plant can use.