Trisha Shetty (Editor)

Tilletia controversa

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Kingdom
  
Fungi

Genus
  
Phylum
  
Basidiomycota

Order
  
Family
  
Tilletiaceae

Scientific name
  
Tilletia controversa

Rank
  
Species

Subclass
  
Exobasidiomycetidae

Tilletia controversa bugwoodcloudorgimages768x5125359728jpg

Similar
  
Tilletia, Tilletia caries, Ustilago tritici, Karnal bunt, Urocystis

Tilletia controversa is a plant pathogen. It is a fungus known to cause the smut disease TCK smut in soft white and hard red winter wheats. It stunts the growth of the plants and leaves smut balls in the grain heads. When the grain is milled the smut balls emit a fishy odor that lowers the quality of the flour.

Tilletia controversa Tilletia controversa

TCK smut exists in the western and northwestern United States, but is not considered a major problem. The disease took on policy significance because China applied a zero tolerance on the presence of TCK spores, resulting in a ban from 1974 to 1999 on shipments from the Pacific Northwest. Until the summer of 1996, China accepted shipments of U.S. wheat from the Gulf Coast, and negotiated price discounts with the shippers to cover the cost of decontamination if traces of TCK were found. Then in June 1996, China rejected all cargoes of U.S. wheat with traces of TCK. The November 1999 U.S.-China Agricultural Cooperation Agreement removes the ban and allows imports of U.S. wheat and other grains that meet a specific TCK tolerance level, thus improving the competitiveness of U.S. wheat with Canadian and Australian exports.

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Tilletia controversa dwarf bunt dwarf smut Tilletia controversa on common wheat

Tilletia controversa AgroAtlas Diseases Tilletia controversa Kuhn Dwarf bunt

References

Tilletia controversa Wikipedia