biotroph: meaning, definition, pronunciation and examples
C2/Extremely Rare (Specialist)Technical/Scientific
Quick answer
What does “biotroph” mean?
An organism that obtains nutrients from living host cells without killing them immediately.
Audio
Pronunciation
Definition
Meaning and Definition
An organism that obtains nutrients from living host cells without killing them immediately.
A parasite or pathogen that maintains its host alive for an extended period to draw nutrients, contrasted with necrotrophs that kill host tissue.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning. Slightly more common in British ecological literature.
Connotations
Neutral technical descriptor. No emotional connotation.
Frequency
Extremely low frequency in both variants. Found only in specialist texts.
Grammar
How to Use “biotroph” in a Sentence
[organism] is a biotroph[pathogen] behaves as a biotrophVocabulary
Collocations
Examples
Examples of “biotroph” in a Sentence
adjective
British English
- The biotrophic phase of the fungus can last for weeks.
American English
- The pathogen exhibits a strictly biotrophic relationship with its host.
Usage
Meaning in Context
Business
Not used.
Academic
Used in plant pathology and microbiology papers to classify parasitic strategies.
Everyday
Never used.
Technical
Core term for describing pathogens that derive nutrients from living cells (e.g., rust fungi, powdery mildews).
Vocabulary
Synonyms of “biotroph”
Neutral
Weak
Vocabulary
Antonyms of “biotroph”
Watch out
Common Mistakes When Using “biotroph”
- Using 'biotroph' to describe decomposers (saprotrophs).
- Confusing with 'symbiont' (biotrophs are parasitic, not mutualistic).
FAQ
Frequently Asked Questions
Yes, all biotrophs are parasites, but not all parasites are biotrophs. Biotrophy specifies the strategy of feeding from living cells.
The term is rarely applied to animals; it's primarily used for fungi, oomycetes, and some bacteria that infect plants.
A necrotroph is the direct opposite—a pathogen that kills host cells quickly and then feeds on the dead tissue.
Almost exclusively in advanced academic textbooks and research articles in plant pathology, mycology, or microbiology.
An organism that obtains nutrients from living host cells without killing them immediately.
Biotroph is usually technical/scientific in register.
Biotroph: in British English it is pronounced /ˈbaɪəʊˌtrɒf/, and in American English it is pronounced /ˈbaɪoʊˌtroʊf/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
BIO (life) + TROPH (nourishment) = nourished by living tissue.
Conceptual Metaphor
A tenant who pays rent by slowly consuming the landlord's food while the landlord remains alive.
Practice
Quiz
Which organism is most likely to be a biotroph?