Your are here:

Bromus smut

Scientific Name
Ustilago bromivora
Scientific Author
(Tul. & C. Tul.) A.A. Fisch. Waldh.
Taxonomy
Basidiomycota, Ustilaginomycetes, Ustilaginales, Ustilaginaceae
Status
Exotic establishment in Australia
Reliability
High
Download
PDF

Page menu options:

Diagnostic Images

Host symptoms
Close
Caption
Ustilago bromivora on Bromus diandrus - BRIP 45364. Scale bar = 5 mm
Source
Roger Shivas DEEDI
Image Options
Close
Diagnostic Images (3)
Diagnostic Notes
Sori in the spikelets, usually destroying the basal parts of the glumes and even the ovaries, bullate, at first agglutinated and covered by the epidermis but becoming dusty, black or blackish brown. Infection systemic; seedlings and older shoots infected.

Spores globose to subglobose, occasionally ovoid or irregularly polyhedral, 8–11 × 6.5–9.5 µm, olivaceous to reddish brown, often with a darker equatorial band; wall uniformly thick to slightly uneven, 1.0–1.5 µm, in LM finely to rather coarsely verrucose, more pronounced on the polar regions, in SEM coarsely verrucose.

Spore germination spore usually forming a pair of 2-celled basidia (occasionally one 3-celled and one 1-celled) on which terminal and lateral ovoid basidiospores are borne. Sometimes only one 2-celled basidium is produced, the 2 cells conjugating and giving rise to a dikaryotic mycelium or, rarely, to 2 basidiospores.
More Information
Specimen Contact
Roger Shivas
Author
Roger Shivas
Created
16/12/2010 11:52 AEST
Last Updated
16/12/2010 11:52 AEST
Citation
Roger Shivas (2010) Bromus smut (Ustilago bromivora) Updated on 12/16/2010 11:52:41 AM Available online: PaDIL - http://www.padil.gov.au.
Image Use
Free for use under the Creative Commons Attribution 3.0 Australia License

Loading