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Urocystis primulae

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Species of fungus

Urocystis primulae
Conidia are visible as a white powder around the anthers of Primula vulgaris.
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Fungi
Division: Basidiomycota
Class: Ustilaginomycetes
Order: Urocystidales
Family: Urocystidiaceae
Genus: Urocystis
Species: U. primulae
Binomial name
Urocystis primulae
(Rostrup) Vánky, 1985
Synonyms

Ginanniella primulae (Rostrup) Ciferri, 1938

Urocystis primulae is a fungal plant pathogen that infects several species of Primula.

The fungus affects the flowers of the plant, turning the contents of the ovary into a mass of spore balls: clumps of ustilospores wrapped in a layer of sterile cells. It also produces white, powdery conidia in the anthers.

Gallery

  • A yellow, tubular, dissected flower with a white powder visible around the anthers and a brown mass in the ovary. A dissected flower of Primula vulgaris infected with Urocystis primulae. Conidia are visible as a white powder around the anthers and ustilospores as a blackish brown mass in the ovary.
  • Brown clumps of cells under high magnification. Each clump is roughly oval and is composed of around twenty cells. Spore balls of Urocystis primulae under the microscope. These are the ustilospores visible in the ovary in the image above.

References

  1. ^ "Urocystis primulae (Rostrup) Vánky, 1985". Plant parasites of Europe. Retrieved 11 May 2024.
  2. Woods, R. G., Chater, A. O., Smith, P. A., Stringer, R. N., Evans, D. A. (2018). Smut and allied fungi of Wales: a guide, red data list and census catalogue. A. O. Chater. ISBN 978-0-9565750-2-9.
Taxon identifiers
Urocystis primulae
Sorosporium primulae


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