Cochliobolus spicifer
spring dead spot of grasses
Bipolaris spicifera, Brachycladium spiciferum,Curvularia spicifera, Drechslera spicifera,Drechslera tetramera, Helminthosporium spiciferum
Worldwide
Widespread
2022-11-11 19:01:01
fungus
Korea
Wide, but primarily causing disease in grasses in nature. If not listed below, the presence of this pathogen on a host seems to be unimportant or a scientific curiosity.
COCHSI
Primarily a leaf pathogen of grass. Only reported in sorghum in Kansas (COCHSI-2)
5 Known Hosts
Sorghum bicolor
sorghum
Yes
COCHSI-5,COCHSI-6
Though this pathogen is recovered from sorghum seed more often than other grains. The pathogen is still not considered important in sorghum production and it is easily controlled with seed treatments. The fungus and its synonyms seem to be worldwide and its presence on seed seems to have little or no effect on disease development.
Yes
Blotter or Freezing blotter
COCHSI-8
Yes, thiram or mancozeb eradicates fungus on seed
COCHSI-5
Saravanan T; Karuppiah R, 2005. Effects of fungicides, biocontrol agents and plant extracts on sorghum seed infection. Journal of Ecobiology, 17:461-465.
Fakhrunnisa M.H., Hashimi AND Ghaffar A., 2006. Seed-borne Mycoflora of Wheat, Sorghum and Barley. Pak. J. Bot., 38(1): 185-192
Banerjee N; Pandey AK; Jamaluddin, 2011. First report of the Drechslera state of Cochliobolus spicifer infecting seeds of Parthenium hysterophorus in India. New Disease Reports, 24:Article 7. http://www.ndrs.org.uk
Triticum aestivum
wheat
No
COCHSI-3,COCHSI-4,COCHSI-6
Pathway not proven. Drechslera tetramers, a synonym of Cochliobolus spicifer has been reported form seed samples in the laboratory. No other references were found. Cochliobolus.spicifer is not listed as seedborne in Richardson, (COCHSI-3). Cochliobolus spicifer is not considered an important pathogen of wheat.
Yes
Blotter or Freezing blotter
COCHSI-6
Richardson MJ, 1990. An Annotated List of Seed-borne Disease. International Seed Testing Association, Zurich, Switzerland
Zillinsky FJ, 1983. Common Diseases of Small Grain Cereals: A Guide to Identification. CIMMYT; International Maize and Wheat Improvement Center, Mexico City, Mexico.
Fakhrunnisa M.H., Hashimi AND Ghaffar A., 2006. Seed-borne Mycoflora of Wheat, Sorghum and Barley. Pak. J. Bot., 38(1): 185-192
Hordeum vulgare
barley
No
COCHSI-1,COCHSI-3,COCHSI-6
Pathway not proven. Drechslera tetramers, a synonym of Cochliobolus spicifer has been reported form seed samples in the laboratory. No other references were found. Not listed as a host in Richardson, 1990, This pathogen is not important in grain production.
Yes
Blotter or Freezing blotter
COCHSI-6
Cochliobolus spicifer In: Crop Protection Compendium. Wallingford, UK: CAB International. www.cabi.org/cpc.
Richardson MJ, 1990. An Annotated List of Seed-borne Disease. International Seed Testing Association, Zurich, Switzerland
Fakhrunnisa M.H., Hashimi AND Ghaffar A., 2006. Seed-borne Mycoflora of Wheat, Sorghum and Barley. Pak. J. Bot., 38(1): 185-192
Secale cereale
rye
No
COCHSI-3,COCHSI-4
Pathway not proven. Both references above indicate this pathogen is not important in grain production. Richardson, 1990 lists one reference where this pathogen was found on seed but no other references were found to corroborate.
Richardson MJ, 1990. An Annotated List of Seed-borne Disease. International Seed Testing Association, Zurich, Switzerland
Zillinsky FJ, 1983. Common Diseases of Small Grain Cereals: A Guide to Identification. CIMMYT; International Maize and Wheat Improvement Center, Mexico City, Mexico.
Avena sativa
oat
No
COCHSI-3,COCHSI-4
Pathway not proven. Richardson, (COCHSI-3) cites one reference from 1949 where seed may be a pathway. Cochliobolus spicifer is not a significant pathogen of small grains (COCHSI-4)
Richardson MJ, 1990. An Annotated List of Seed-borne Disease. International Seed Testing Association, Zurich, Switzerland
Zillinsky FJ, 1983. Common Diseases of Small Grain Cereals: A Guide to Identification. CIMMYT; International Maize and Wheat Improvement Center, Mexico City, Mexico.
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