Alternaria japonica
black spot of radish
Alternaria raphani. Alternaria brassicae var. macrospora,Alternaria matthiolae
Worldwide
Widespread
2021-03-29 16:26:13
fungus
Korea
brassicas, radish, rapeseed
ALTERP
Korea lists this pathogen as Alternaria spp. This pathogen has been reported in Korea.
5 Known Hosts
Brassica oleracea vars.
broccoli, brussel sprouts, cabbage, cauliflower
Yes
ALTERP-3,ALTERP-5,ALTERP-7,ALTERP-2
Though more common in rapeseed and radish, seed as a pathway has been established and accepted.
Yes
Blotter incubation, culture plating
ALTERP-1
Seed treatments
Chemical, Physical (hot water) and biological seed dressings have been described and are successful in controlling seed inoculum.
ALTERP-1,ALTERP-5
International Seed Federation Regulated Pest List Database. www.pestlist.worldseed.org. Nyon, switzerland
Saharan GS, Mehta N and Meena PD. 2016. Alternaria Diseases of Crucifers: Biology, Ecology and Disease Management. Springer Science+Business Media Singapore Pte Ltd. is part of Springer Science+Business Media (www.springer.com)
Holtzhausen MA and Knox-Davies PS, 1974. Pathogens of cruciferous vegetable crops in commercial seed samples in South Africa. Phytophylactica, 6:289-294
Farr, D.F., and Rossman, A.Y. Fungal Databases, Systematic Mycology and Microbiology Laboratory, ARS, USDA. 2020, http://nt.ars-grin.gov/fungaldatabases/
Alternaria japonica. In: Crop Protection Compendium. Wallingford, UK: CAB International. www.cabi.org/cpc.
Raphanus sativus
radish
Yes
ALTERP-2,ALTERP-5,ALTERP-7
Seed as a pathway is established and accepted.
Yes
Blotter incubation, culture plating
ALTERP-1
Seed treatments
Chemical, Physical (hot water) and biological seed dressings have been described and are successful in controlling seed inoculum.
ALTERP-1,ALTERP-5
Farr, D.F., and Rossman, A.Y. Fungal Databases, Systematic Mycology and Microbiology Laboratory, ARS, USDA. 2020, http://nt.ars-grin.gov/fungaldatabases/
Saharan GS, Mehta N and Meena PD. 2016. Alternaria Diseases of Crucifers: Biology, Ecology and Disease Management. Springer Science+Business Media Singapore Pte Ltd. is part of Springer Science+Business Media (www.springer.com)
Holtzhausen MA and Knox-Davies PS, 1974. Pathogens of cruciferous vegetable crops in commercial seed samples in South Africa. Phytophylactica, 6:289-294
Alternaria japonica. In: Crop Protection Compendium. Wallingford, UK: CAB International. www.cabi.org/cpc.
Brassica napus
rapeseed
Yes
ALTERP-2,ALTERP-5,ALTERP-6
Seed as a pathway has been established but it seems less common than in radish. There was no correlation between seed infestations and seedling stands (Petrie, 1974)
Yes
Blotter incubation, culture plating
ALTERP-1
Seed treatments
Chemical, Physical (hot water) and biological seed dressings have been described and are successful in controlling seed inoculum.
ALTERP-1,ALTERP-5
Farr, D.F., and Rossman, A.Y. Fungal Databases, Systematic Mycology and Microbiology Laboratory, ARS, USDA. 2020, http://nt.ars-grin.gov/fungaldatabases/
Saharan GS, Mehta N and Meena PD. 2016. Alternaria Diseases of Crucifers: Biology, Ecology and Disease Management. Springer Science+Business Media Singapore Pte Ltd. is part of Springer Science+Business Media (www.springer.com)
Petrie GA, 1974. Fungi associated with seeds of rape, turnip rape, flax, and safflower in western Canada, 1968-73. Canadian Plant Disease Survey, 54:155-165
Alternaria japonica. In: Crop Protection Compendium. Wallingford, UK: CAB International. www.cabi.org/cpc.
Brassica rapa
turnip, chinese cabbage
Yes
ALTERP-2,ALTERP-5,ALTERP-6
Seed as a pathway is established and accepted.
Yes
Blotter incubation, culture plating
ALTERP-1
Seed treatments
Chemical, Physical (hot water) and biological seed dressings have been described and are successful in controlling seed inoculum.
ALTERP-1,ALTERP-5
Farr, D.F., and Rossman, A.Y. Fungal Databases, Systematic Mycology and Microbiology Laboratory, ARS, USDA. 2020, http://nt.ars-grin.gov/fungaldatabases/
Saharan GS, Mehta N and Meena PD. 2016. Alternaria Diseases of Crucifers: Biology, Ecology and Disease Management. Springer Science+Business Media Singapore Pte Ltd. is part of Springer Science+Business Media (www.springer.com)
Petrie GA, 1974. Fungi associated with seeds of rape, turnip rape, flax, and safflower in western Canada, 1968-73. Canadian Plant Disease Survey, 54:155-165
Alternaria japonica. In: Crop Protection Compendium. Wallingford, UK: CAB International. www.cabi.org/cpc.
Solanum lycopersicum
tomato
No
ALTERP-3,ALTERP-4
Not a host. Though CABI (2020) lists tomato as a possible host and cites Khulbe and Sati (1987) as a reference, but no data was presented and the source of the seed was not given. No other references were found indicating tomato is a natural host for this pathogen.
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