Chromatium
E930657
Chromatium is a genus of purple sulfur bacteria known for performing anoxygenic photosynthesis in aquatic, often sulfide-rich environments.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Chromatium canonical | 3 |
| Chromatium okenii | 2 |
| Thiocapsa roseopersicina | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11515288 — 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: Chromatium Context triple: [Gammaproteobacteria, includesGenus, Chromatium]
-
A.
Sulfurospirillum
Sulfurospirillum is a genus of spiral-shaped, sulfur-reducing bacteria commonly found in anaerobic aquatic and sediment environments.
-
B.
Nitrososphaera
Nitrososphaera is a genus of ammonia-oxidizing archaea commonly found in soil and other terrestrial environments, playing a key role in the global nitrogen cycle.
-
C.
Wolinella
Wolinella is a genus of anaerobic, Gram-negative bacteria known for inhabiting animal gastrointestinal tracts and participating in hydrogen-based syntrophic relationships.
-
D.
Sulfolobus
Sulfolobus is a genus of thermophilic, acid-loving archaea commonly found in volcanic hot springs and known for their use as model organisms in extremophile research.
-
E.
Pyrobaculum
Pyrobaculum is a genus of hyperthermophilic archaea known for thriving in extremely high-temperature environments such as hot springs and hydrothermal vents.
- 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: Chromatium Target entity description: Chromatium is a genus of purple sulfur bacteria known for performing anoxygenic photosynthesis in aquatic, often sulfide-rich environments.
-
A.
Sulfurospirillum
Sulfurospirillum is a genus of spiral-shaped, sulfur-reducing bacteria commonly found in anaerobic aquatic and sediment environments.
-
B.
Nitrososphaera
Nitrososphaera is a genus of ammonia-oxidizing archaea commonly found in soil and other terrestrial environments, playing a key role in the global nitrogen cycle.
-
C.
Wolinella
Wolinella is a genus of anaerobic, Gram-negative bacteria known for inhabiting animal gastrointestinal tracts and participating in hydrogen-based syntrophic relationships.
-
D.
Sulfolobus
Sulfolobus is a genus of thermophilic, acid-loving archaea commonly found in volcanic hot springs and known for their use as model organisms in extremophile research.
-
E.
Pyrobaculum
Pyrobaculum is a genus of hyperthermophilic archaea known for thriving in extremely high-temperature environments such as hot springs and hydrothermal vents.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
genus
ⓘ
purple sulfur bacteria ⓘ |
| carbonSource | carbon dioxide ⓘ |
| cellOrganization | unicellular ⓘ |
| cellShape |
rod-shaped
ⓘ
vibrioid ⓘ |
| cellWallType | Gram-negative ⓘ |
| class | Gammaproteobacteria ⓘ |
| color | purple ⓘ |
| domain | Bacteria ⓘ |
| ecologicalRole |
primary producer in anoxic zones
ⓘ
sulfur cycle participant ⓘ |
| electronDonor |
hydrogen sulfide
ⓘ
reduced sulfur compounds ⓘ |
| energySource | light ⓘ |
| environmentPreference | anoxic light-exposed zones ⓘ |
| family |
Chromatiaceae
ⓘ
linked to:
Chromatiales
|
| firstDescriptionYear | 1838 ⓘ |
| foundIn |
brackish environments
ⓘ
chemocline of meromictic lakes ⓘ freshwater environments ⓘ marine environments ⓘ |
| habitat |
aquatic environments
ⓘ
microaerobic zones ⓘ stagnant ponds ⓘ stratified lakes ⓘ sulfide-rich waters ⓘ |
| kingdom | Bacteria ⓘ |
| metabolismType |
anoxygenic phototroph
ⓘ
phototrophic ⓘ |
| motility | motile by flagella ⓘ |
| namedBy | Friedrich Anton Wilhelm Miquel ⓘ |
| order | Chromatiales ⓘ |
| oxygenRequirement | anaerobic ⓘ |
| oxygenTolerance | microaerophilic ⓘ |
| photosynthesisType | anoxygenic photosynthesis ⓘ |
| phylum | Pseudomonadota ⓘ |
| pigment |
bacteriochlorophyll a
ⓘ
bacteriochlorophyll b ⓘ carotenoids ⓘ |
| reproduction | binary fission ⓘ |
| storesSulfurAs | intracellular sulfur granules ⓘ |
| sulfurOxidationProduct |
elemental sulfur
ⓘ
sulfate ⓘ |
| taxonRank | genus ⓘ |
| trophicType | photoautotroph ⓘ |
| typeSpecies |
Chromatium okenii
ⓘ
linked to:
Chromatium
|
| usesCalvinCycle | true ⓘ |
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: Chromatium Description of subject: Chromatium is a genus of purple sulfur bacteria known for performing anoxygenic photosynthesis in aquatic, often sulfide-rich environments.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Chromatium
linked to: Chromatium
linked to: Chromatium