Tilletia controversa
dwarf bunt of wheat
Tilletia brevifaciens, Tilletia tritici-anifican
Worldwide
CA, CO, ID, IN, KS, MI, MT, NY, OR, UT, WA, WY.
2022-09-13 18:48:54
fungus
China
Primarily winter wheat. rye, barley, spelt, wheatgrass and perennial grasses of the Poacease family may also be hosts
TILLCO
Grass seed may carry this pathogens spores, but no references were found to support grass seed as a host. Primarily found where snow cover is persistent in the winter.
3 Known Hosts
Triticum aestivum
wheat
Yes
TILLCO-3
Winter wheat is most susceptible. Detection in seed was very low. Pathogen is associated with seed and at most, external. Research was done with wheat for grain and not for seed crops.
Yes
Seed wash, Teliospore identification, PCR
TILLCO-4,TILLCO-12,TILLCO-16
Difenoconazole, bitertanol + fuberidazole fungicides
Difenoconazole completely effective. Seed treatments protect germinating seedlings from soil-borne pathogen infections, too.
TILLCO-5,TILLCO-7,TILLCO-11
Grey, Mathre, Hoffman, Powelson and Fernandez, 1986. Importance of seedborne Tilletia controversa for infection of winter wheat and its relationship to international commerce. Plant Disease 70:122-125
Dewey WG, Hoffmann JA, 1975. Susceptibility of barley to Tilletia controversa. Phytopathology, 65:654-657
Nian SJ, Yuan Q, Yin YP, Cai J, Wang ZK, 2009. Detection of Tilletia controversa Kühn by real time quantitative PCR. Scientia Agricultura Sinica, 42:4403-4410.
Kietriber M, 1984. Working Sheet No. 53 (Wheat, Dwarf Bunt). ISTA Handbook of Seed Health Testing. Zurich, Switzerland: International Seed Testing Association.
Sitton JW, Line RF, Waldher JT, Goates BJ, 1993. Difenoconazole seed treatment for control of dwarf bunt of winter wheat. Plant Disease, 77:1148-1151
Johnsson L, 1991. Experiments with seed-borne and soil-borne dwarf bunt (Tilletia contraversa Kuhn) in winter wheat in Sweden. Zeitschrift fur Pflanzenkrankheiten und Pflanzenschutz, 98:162-167
Chastain TG, 1991. High-temperature sodium hypochlorite effects on viability of Tilletia controversa teliospores and wheat seed. Crop Science, 31:1327-1330
Hordeum vulgare
barley
No
TILLCO-4
Pathway not proven. No evidence that seed is a pathway in barley. Association with seed inferred due to seed as a pathway for wheat.
Dewey WG, Hoffmann JA, 1975. Susceptibility of barley to Tilletia controversa. Phytopathology, 65:654-657
Secale cereale
rye
No
TILLCO-9
Pathway not proven. Most of the rye infecting bunt in the US are the species of Tilletia secalis, a pathogen of cultivated rye in Europe. Though Tilletia controversa has been shown to infect rye. Association with seed inferred due to seed as a pathway for wheat
Carris, L. M., and L. A. Castlebury. 2008. Is rye bunt,Tilletia secalis , present in North America? North American Fungi 3:147-159
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