ceratostomella ulmi
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Definition
Noun: * A species of fungus (Ceratostomella ulmi, now more commonly classified as Ophiostoma ulmi or Ophiostoma novo-ulmi) that is the pathogenic agent causing Dutch elm disease. It is a sac fungus (ascomycete) that invades and blocks the water-conducting vessels of elm trees.
Usage Notes
- This is a highly specific scientific term (a taxonomic binomial name) used primarily in botany, plant pathology, and forestry.
- The name is often seen in its modern taxonomic classifications, or , but the historical name Ceratostomella ulmi remains in use, especially in older literature.
- It is used as a singular noun to refer to the fungal species itself.
Examples
- The spread of Ceratostomella ulmi across North America devastated native elm populations.
- Researchers studied the life cycle of Ceratostomella ulmi to develop control methods.
- Dutch elm disease is caused by the fungus Ceratostomella ulmi.
Advanced Usage
- The term is used in formal scientific writing, research papers, and technical reports on plant diseases.
- It can be used attributively (like an adjective) to modify other nouns, e.g., "Ceratostomella ulmi spores," "Ceratostomella ulmi infection."
Variants and Related Words
- Dutch elm disease fungus: A common descriptive name for the pathogen.
- Ophiostoma ulmi: The modern, more accepted taxonomic name for the same or a closely related species complex.
- Ophiostoma novo-ulmi: The name for a more aggressive subspecies responsible for the later pandemic.
- Ascomycete: The broader class of fungi to which it belongs.
Synonyms
- Dutch elm disease pathogen
- Elm wilt fungus (less precise)
Related Phrases/Idioms
- Carrier of Ceratostomella ulmi: Often refers to the bark beetles (e.g., spp.) that transport the fungal spores.
- Ceratostomella ulmi infestation: Describes an active, widespread infection in an area.
Noun
- fungus causing Dutch elm disease