Ophiostoma quercus
E53811
Ophiostoma quercus is a species of fungus in the genus Ophiostoma, commonly associated with wood and bark of oak trees and known for its role in tree diseases and wood discoloration.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Ophiostoma quercus canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T393445 — 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: Ophiostoma quercus Context triple: [Ophiostoma, hasSpecies, Ophiostoma quercus]
-
A.
Ophiostoma piceae
Ophiostoma piceae is a species of sap-staining fungus commonly associated with coniferous trees and known for causing blue stain in lumber.
-
B.
Ophiostoma
Ophiostoma is a genus of fungi best known for containing species that cause Dutch elm disease in elm trees.
-
C.
Ophiostoma ulmi
Ophiostoma ulmi is a pathogenic fungus best known for causing the devastating tree epidemic known as Dutch elm disease.
-
D.
Ophiostoma himal-ulmi
Ophiostoma himal-ulmi is a species of fungus in the Ophiostoma genus, known for its association with tree diseases similar to Dutch elm disease.
-
E.
Ophiostoma novo-ulmi
Ophiostoma novo-ulmi is a highly virulent fungal pathogen responsible for the most destructive modern pandemic of Dutch elm disease in elm trees worldwide.
- 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: Ophiostoma quercus Target entity description: Ophiostoma quercus is a species of fungus in the genus Ophiostoma, commonly associated with wood and bark of oak trees and known for its role in tree diseases and wood discoloration.
-
A.
Ophiostoma piceae
Ophiostoma piceae is a species of sap-staining fungus commonly associated with coniferous trees and known for causing blue stain in lumber.
-
B.
Ophiostoma
Ophiostoma is a genus of fungi best known for containing species that cause Dutch elm disease in elm trees.
-
C.
Ophiostoma ulmi
Ophiostoma ulmi is a pathogenic fungus best known for causing the devastating tree epidemic known as Dutch elm disease.
-
D.
Ophiostoma himal-ulmi
Ophiostoma himal-ulmi is a species of fungus in the Ophiostoma genus, known for its association with tree diseases similar to Dutch elm disease.
-
E.
Ophiostoma novo-ulmi
Ophiostoma novo-ulmi is a highly virulent fungal pathogen responsible for the most destructive modern pandemic of Dutch elm disease in elm trees worldwide.
- F. None of above. chosen
Statements (42)
| Predicate | Object |
|---|---|
| instanceOf |
ascomycete
ⓘ
fungus species ⓘ plant pathogen ⓘ sac fungus ⓘ |
| associatedWith | blue-stain type discoloration ⓘ |
| associatedWithHost |
Quercus species
ⓘ
oak trees ⓘ |
| causes |
stain in oak timber
ⓘ
wood discoloration in oak ⓘ |
| distribution |
occurs in temperate regions
ⓘ
reported from Europe ⓘ reported from North America ⓘ |
| ecologicalRole | colonizer of stressed or wounded oak trees ⓘ |
| economicImportance |
forest pathology concern
ⓘ
timber staining organism ⓘ |
| family | Ophiostomataceae ⓘ |
| foundInSubstrate |
dead or dying oak branches
ⓘ
freshly cut oak logs ⓘ |
| genus | Ophiostoma ⓘ |
| growthEnvironment | grows in xylem vessels of oak ⓘ |
| habitat |
bark of oak trees
ⓘ
wood of oak trees ⓘ |
| hostRange | primarily infects Quercus spp. ⓘ |
| impact |
associated with tree health decline
ⓘ
reduces commercial value of oak wood ⓘ |
| interactionWithInsects |
vectored by bark beetles
ⓘ
vectored by wood-boring insects ⓘ |
| kingdom | Fungi ⓘ |
| morphology |
forms dark staining in xylem
ⓘ
produces hyaline to lightly pigmented hyphae ⓘ |
| order | Ophiostomatales ⓘ |
| pathogenicity | opportunistic pathogen of oak ⓘ |
| phylum | Ascomycota ⓘ |
| reproduction |
produces ascospores
ⓘ
produces asexual spores ⓘ |
| roleInEcosystem | sapwood-staining fungus ⓘ |
| studiedInField |
forest pathology
ⓘ
wood microbiology ⓘ |
| symptomOnHost |
brown to dark streaks in sapwood
ⓘ
discoloration around beetle galleries ⓘ |
| taxonomicStatus | accepted species in Ophiostoma ⓘ |
| transmission | often associated with bark beetles ⓘ |
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: Ophiostoma quercus Description of subject: Ophiostoma quercus is a species of fungus in the genus Ophiostoma, commonly associated with wood and bark of oak trees and known for its role in tree diseases and wood discoloration.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.