Rhizobia
thumb|right|Root nodules, each containing billions of Rhizobiaceae bacteria
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- Lotus pedunculatus11 ies.jpg
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~17 min read
Article
19 sectionsContents
- History
- Taxonomy {{efn|As with many bacterium classifications, taxonomy work is still in progress as new genetic data and discoveries re-shuffle the existing phylogenetic tree}}
- Importance in agriculture
- Symbiotic relationship
- Nature of the mutualism
- Infection and signal exchange
- Evolutionary hypotheses
- The sanctions hypothesis
- The partner choice hypothesis
- Evolutionary history
- Ecology
- Effects of Rhizobia on Legume Host Characteristics
- Effects of Mutualism on other Species
- Context-Dependency of Mutualism
- Other diazotrophs
- Note
- References
- Further reading
- External links
thumb|right|Root nodules, each containing billions of Rhizobiaceae bacteria
Rhizobia are diazotrophic bacteria that fix nitrogen after becoming established inside the root nodules of legumes (Fabaceae). To express genes for nitrogen fixation, rhizobia require a plant host; they cannot independently fix nitrogen. In general, they are gram negative, motile, non-sporulating rods.