Urocystis cepulae

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Definition

Noun: - A species of smut fungus (Uropyxis cepulae, syn. Urocystis cepulae) that infects plants in the onion family, causing disease characterized by dark, blister-like pustules on the scales and leaves. It is particularly harmful to young, developing plants.

Usage
  • is a fungal pathogen.
  • The primary host for is the onion ().
  • Controlling is important for onion cultivation.
Examples in Use
  • The onion crop was severely damaged by an infection of Urocystis cepulae.
  • Gardeners must watch for the tell-tale blisters caused by Urocystis cepulae on seedling leaves.
  • Research into fungicides effective against Urocystis cepulae is ongoing.
Advanced Usage
  • In botanical and pathological texts, the name may be followed by the author citation "Frost" to specify the taxonomic authority: Urocystis cepulae Frost.
  • The disease caused by this fungus is commonly referred to as onion smut.
Variants and Related Words
  • Onion smut: The common name for the plant disease caused by .
  • Smut fungus: A general term for fungi in the order Ustilaginales, which includes and causes diseases characterized by sooty spore masses.
  • Uropyxis cepulae: A former or alternative genus classification for the same organism.
Synonyms
  • Onion smut fungus (common name equivalent).
Related Terms and Context
  • Pathogen: An organism that causes disease; is a plant pathogen.
  • Allium: The plant genus that includes onions, garlic, and leeks, which are hosts for this fungus.
  • Seedling blight: A descriptive term for the damaging effect of on young plants.
Noun
  1. smut fungus causing blackish blisters on scales and leaves of onions; especially destructive to seedlings

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