Cochliobolus cynodontis
browning of bermuda grass
Bipolaris cynodontis, Drechslera cynodontis, Helminthsporuim cynodontis
Worldwide,primarily in the tropics of Asia, Africa, Oceania.
Primarily in the SE.
2022-11-11 18:56:10
fungus
Korea
grains, grasses
COCHCY
All reports of US presence from 1950-60s. CABI, 2019 does not consider the pathogen to be in the US. Pathogen does not cause serious disease or losses on any host. Also, it is often a secondary invader. (Farr and Rossman, 2019; Manamgoda, 2014)
7 Known Hosts
Hordeum vulgare
barley
No
RICH ISTA
No references found indicating that seed is a pathway. This pathogen is not an important disease of grains. Richardson, 1990 does not list the pathogen as seed borne.
Richardson, MJ. 1990. An Annotated List of Seedborne Diseases. International Seed Testing Association, Zurich Switzerland.
Poaceae family
grasses
No
COCHCY-2,COCHCY-3,COCHCY-4
Pathway not proven. Kim, et.al. (COCHCY-4) reported seed transmission in Coix lachryma-jobi. No references indicating seed is a pathway for other Poaceae grasses. Pathogen does not cause serious disease or losses on any host. Also often a secondary invader. Occasional leaf spotting on bermuda grass is found.
Farr, D.F. and Rossman, A.Y. Fungal Databases, Systematic Mycology and Microbiology Laboratory, ARS, USDA. 2019, http://nt.ars-grin.gov/fungaldatabases/
Manamgoda, D.S., Rossman, A.Y., Castlebury, L.A., Crous, P.W., Madrid, H., Chukeatirote, E., and Hyde, K.D. 2014. The genus Bipolaris. Stud. Mycol. 79: 221-288.
Kim JS and Duhyung L., 2014. Seed transmission of Bipolaris coicis, B. cynodontis, B. maydis and Curvularia lunata causing leaf blight of Job's tears. Korean Journ. of Plant Path.14:287-293
Oryza sativa
rice
No
COCHCY-5,COCHCY-2,COCHCY-3
Pathway not proven. One reference from Brazil found the pathogen on seed samples in laboratory tests. Other references speculated seed as a source without data. Seed as a pathway after seed cleaning and conditioning is not known. Pathogen does not cause serious disease or losses on any host. Also often a secondary invader.
Yes
Blotter incubation
COCHCY-5
Seed as a pathway after seed cleaning and conditioning is not known.
Farias CR, Afonfo AP, Brandão M, and Pierobom C. 2011. Regional survey and identification of Bipolarisspp. associated with rice seeds in Rio Grande do Sul State, Brazil. Cienc. Rural 41 http://www.scielo.br
Farr, D.F. and Rossman, A.Y. Fungal Databases, Systematic Mycology and Microbiology Laboratory, ARS, USDA. 2019, http://nt.ars-grin.gov/fungaldatabases/
Manamgoda, D.S., Rossman, A.Y., Castlebury, L.A., Crous, P.W., Madrid, H., Chukeatirote, E., and Hyde, K.D. 2014. The genus Bipolaris. Stud. Mycol. 79: 221-288.
Secale cereale
rye
No
RICH ISTA
No references found indicating that seed is a pathway. This pathogen is not an important disease of grains. Richardson, 1990 does not list the pathogen as seed borne.
Richardson, MJ. 1990. An Annotated List of Seedborne Diseases. International Seed Testing Association, Zurich Switzerland.
Sorghum bicolor
sorghum
No
RICH ISTA
No references found indicating that seed is a pathway. This pathogen is not an important disease of grains. Richardson, 1990 does not list the pathogen as seed borne.
Richardson, MJ. 1990. An Annotated List of Seedborne Diseases. International Seed Testing Association, Zurich Switzerland.
Triticum aestivum
wheat
No
RICH ISTA
No references found indicating that seed is a pathway. This pathogen is not an important disease of grains. Richardson, 1990 does not list the pathogen as seed borne.
Richardson, MJ. 1990. An Annotated List of Seedborne Diseases. International Seed Testing Association, Zurich Switzerland.
Zea mays
corn
No
RICH ISTA
No references found indicating that seed is a pathway. This pathogen is not an important disease of corn. Richardson, 1990 does not list the pathogen as seed borne.
Richardson, MJ. 1990. An Annotated List of Seedborne Diseases. International Seed Testing Association, Zurich Switzerland.
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