Rhizobium bacteria
E209718
Rhizobium bacteria are soil-dwelling microorganisms that form nitrogen-fixing root nodules on leguminous plants, helping convert atmospheric nitrogen into a usable form for plant growth.
All labels observed (5)
| Label | Occurrences |
|---|---|
| Rhizobium | 5 |
| Rhizobium bacteria canonical | 2 |
| Rhizobium etli | 1 |
| Rhizobium leguminosarum | 1 |
| Rhizobium tropici | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1891636 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Rhizobium bacteria Context triple: [Faboideae, symbiosisWith, Rhizobium bacteria]
-
A.
Heterodera glycines
Heterodera glycines is a plant-parasitic nematode known as the soybean cyst nematode, a major agricultural pest that significantly reduces soybean yields worldwide.
-
B.
Rousselia
Rousselia is a genus of flowering plants in the hemp family Cannabaceae, native to tropical regions of the Americas.
-
C.
Meloidogyne incognita
Meloidogyne incognita is a highly destructive root-knot nematode species that parasitizes a wide range of crops, causing characteristic root galls and significant agricultural yield losses worldwide.
-
D.
Reissekia
Reissekia is a small genus of flowering plants in the buckthorn family Rhamnaceae, native to parts of South America.
-
E.
Coliiformes
Coliiformes is an order of small, arboreal African birds known as mousebirds, characterized by soft plumage, long tails, and strong climbing abilities.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Rhizobium bacteria Target entity description: Rhizobium bacteria are soil-dwelling microorganisms that form nitrogen-fixing root nodules on leguminous plants, helping convert atmospheric nitrogen into a usable form for plant growth.
-
A.
Heterodera glycines
Heterodera glycines is a plant-parasitic nematode known as the soybean cyst nematode, a major agricultural pest that significantly reduces soybean yields worldwide.
-
B.
Rousselia
Rousselia is a genus of flowering plants in the hemp family Cannabaceae, native to tropical regions of the Americas.
-
C.
Meloidogyne incognita
Meloidogyne incognita is a highly destructive root-knot nematode species that parasitizes a wide range of crops, causing characteristic root galls and significant agricultural yield losses worldwide.
-
D.
Reissekia
Reissekia is a small genus of flowering plants in the buckthorn family Rhamnaceae, native to parts of South America.
-
E.
Coliiformes
Coliiformes is an order of small, arboreal African birds known as mousebirds, characterized by soft plumage, long tails, and strong climbing abilities.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
bacterial genus
ⓘ
nitrogen-fixing bacterium ⓘ |
| affectedBy |
soil moisture
ⓘ
soil pH ⓘ soil temperature ⓘ |
| associatedWith | crop yield improvement in legumes ⓘ |
| benefits | host plant nitrogen nutrition ⓘ |
| carriesGenesFor |
nitrogen fixation (nif genes)
ⓘ
nodulation (nod genes) ⓘ |
| cellShape | rod-shaped ⓘ |
| cellularOrganization | prokaryotic ⓘ |
| class | Alphaproteobacteria ⓘ |
| colonizes | root hairs of legumes ⓘ |
| converts | atmospheric nitrogen (N2) to ammonia (NH3) ⓘ |
| domain | Bacteria ⓘ |
| family | Rhizobiaceae ⓘ |
| fixesNitrogenIn | root nodules ⓘ |
| formsRootNodulesOn | legume roots ⓘ |
| formsSymbiosisWith |
Fabaceae
ⓘ
leguminous plants ⓘ |
| geneticElement | symbiotic plasmids (sym plasmids) ⓘ |
| gramStain | Gram-negative ⓘ |
| habitat |
rhizosphere of plants
ⓘ
soil ⓘ |
| hostRange |
alfalfa (Medicago sativa)
ⓘ
beans (Phaseolus spp.) ⓘ clover (Trifolium spp.) ⓘ lentils (Lens culinaris) ⓘ peas (Pisum sativum) ⓘ |
| importantFor | sustainable agriculture ⓘ |
| improves | soil fertility ⓘ |
| inducesFormationOf | root nodules ⓘ |
| livesAs |
endosymbiont in plant root nodules
ⓘ
free-living soil bacterium ⓘ |
| metabolicCapability | biological nitrogen fixation ⓘ |
| motility | motile with flagella (in many species) ⓘ |
| nutrientExchange |
provides fixed nitrogen to plant
ⓘ
receives carbohydrates from plant ⓘ |
| order | Hyphomicrobiales ⓘ |
| oxygenRequirement | aerobic ⓘ |
| phylum |
Pseudomonadota
ⓘ
linked to:
Proteobacteria
|
| reducesNeedFor | synthetic nitrogen fertilizers ⓘ |
| relationshipType | mutualistic symbiont of legumes ⓘ |
| reproduction | binary fission ⓘ |
| requires | legume host for efficient nitrogen fixation ⓘ |
| sensitiveTo | high soil nitrogen levels ⓘ |
| symbiosisType | root nodule symbiosis ⓘ |
| usedAs | biofertilizer ⓘ |
| usesEnzyme | nitrogenase ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Rhizobium bacteria Description of subject: Rhizobium bacteria are soil-dwelling microorganisms that form nitrogen-fixing root nodules on leguminous plants, helping convert atmospheric nitrogen into a usable form for plant growth.
Referenced by (10)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Rhizobium bacteria
linked to: Rhizobium bacteria
linked to: Rhizobium bacteria
linked to: Rhizobium bacteria
linked to: Rhizobium bacteria
linked to: Rhizobium bacteria
linked to: Rhizobium bacteria
linked to: Rhizobium bacteria