Mycosphaerella brassicicola
cabbage ring spot
Asteroma brassicae, Asteromella brassicae, Cercospora albomaculans, Dothidea brassicae, Phyllosticta brassicicola, Phyllosticta napi, Pseudocercosporella anguioides, Sphaerella brassicicola, Sphaeria brassicicola., Depazea brassicicola
Africa: Ethiopia, Ghana, Kenya, Mrocco, Rwanda, South Africa, Tunisia, Uganda; Asia: Cambodia, China, India, Israel, Malaysia, Philippines, Sri Lanka, Turkey, Vietnam; Europeícenles: Belgium, Bulgaria, Denmark, Finland, France, Germany, Guernsey, Iceland, Ireland, Italy, Maltam Netherlands, Poland, Portugal, Sweden, UK; North America, Canada, Haiti, Jamaica, Mexico, Panama, Puerto Rico, Saint Lucia, Trinidad and Tobago, USA; Oceania: Australia, New Zealand, Norfolk Island; South America: Argentina, Brazil, Chile, Colombia, Ecuador, Guyana, Suriname, Uruguay, Venezuela.
AL, CA, HI, IL, OR, NY, TX, WA
2025-09-28
fungus
Mexico
Main: Brassicaceae family
MYCOBR
Mycosphaerella brassicicola is an ascomycete fungus that causes ringspot disease on Brassica crops, forming concentric leaf lesions that can lead to defoliation and reduced plant vigor. It survives between seasons on infected crop debris. The pathogen spreads primarily via airborne, wind-dispersed ascospores that infect leaves through stomata under cool, moist conditions, with local spread also possible via water splash. Some sources note seed infection but no references were listed and no reports were found that discuss seed transmission of this bacteria.
3 Known Hosts
Brassica napus
rapeseed
No
MYCOBR-2, MYCOBR-3, MYCOBR-4, MYCOBR-6, MYCOBR-7, MYCOBR-8, MYCOBR-9, MYCOBR-10, MYCOBR-11, MYCOBR-12
No references found indicating that seed is a pathway. Crop debris is the most common source of inoculum. Plant debris associated with the seed may carry fungal spores.
biological, chemical, cultural
Control relies on clean seedbeds, proper fertilisation, and hot water treatment. Chemical sprays and resistant cultivars can also help reduce disease.
MYCOBR-5, MYCOBR-12
2025-09-29 11:50:29
Crous, P.W., Phillips, A.J.L., and Baxter, A.P. 2000. Phytopathogenic Fungi from South Africa. Department of Plant Pathology, University of Stellenbosc 358 pages.
Wakeham, A. J., and Kennedy, R. 2010. Risk Assessment Methods for the Ringspot Pathogen Mycosphaerellabrassicicolain Vegetable Brassica Crops, Plant Disease 94: 851-859
Dring, D.M. 1961. Studies on Mycosphaerella brassicicola (Duby) Oudem. Trans. Brit. Mycol. Soc. 44: 253-264.
Cullington, J. E. 1995. Studies into the biology and epidemiology of Mycosphaerella brassicicola, the ringspot pathogen of brassicas. Ph.D. thesis. University of Birmingham, Birmingham,UK.
Götz, M., Zornbach, W., & Boyle, C. (1993). Life cycle of Mycosphaerella brassicicola (Duby) Lindau and ascospore production in vitro. Journal of Phytopathology, 139(4), 298-308.
Kennedy, Wakeham, & Cullington. (1999). Production and immunodetection of ascospores of Mycosphaerella brassicicola: ringspot of vegetable crucifers. Plant Pathology, 48(3), 297-307.
Jackson, G. (2020). Cabbage ring spot (Mycosphaerella brassicicola) [Fact sheet]. Pacific Pests, Pathogens & Weeds.
Köhl, J., Vlaswinkel, M., Groenenboom‐de Haas, B. H., Kastelein, P., van Hoof, R. A., van der Wolf, J. M., & Krijger, M. (2011). Survival of pathogens of Brussels sprouts (Brassica oleracea Gemmifera Group) in crop residues. Plant Pathology, 60(4), 661–670.
Kennedy, R. (2004, May 24). Brassicas: Development of a rapid field based immunomonitoring assay and its use in controlling disease establishment in transplanted crops (Project No. FV 233). Annual project report.
Dixon, G. R. (1981). Pathogens of crucifer crops. In Vegetable crop diseases (pp. 112-156). London: Palgrave Macmillan UK.
Kurose, D., Evans, H.C., Djeddour, D.H., Cannon, P.F., Furuya, N., and Tsuchiya, K. 2009. Systematics of Mycosphaerella species associated with the invasive weed Fallopia japonica, including the potential biological control agent M. polygoni-cuspidati. Mycoscience 50: 179-189.
Brassica oleracea vars.
cabbage, cauliflower, broccoli, brussel sprouts
No
MYCOBR-2, MYCOBR-3, MYCOBR-4, MYCOBR-6, MYCOBR-7, MYCOBR-8, MYCOBR-9, MYCOBR-10, MYCOBR-11, MYCOBR-12
No references found indicating seed as a pathway. Crop debris is the most common source of inoculum. Plant debris associated with the seed may carry fungal spores.
biological, chemical, cultural
Control relies on clean seedbeds, proper fertilisation, and hot water treatment. Chemical sprays and resistant cultivars can also help reduce disease.
MYCOBR-5
2025-09-29 11:53:40
Crous, P.W., Phillips, A.J.L., and Baxter, A.P. 2000. Phytopathogenic Fungi from South Africa. Department of Plant Pathology, University of Stellenbosc 358 pages.
Wakeham, A. J., and Kennedy, R. 2010. Risk Assessment Methods for the Ringspot Pathogen Mycosphaerellabrassicicolain Vegetable Brassica Crops, Plant Disease 94: 851-859
Dring, D.M. 1961. Studies on Mycosphaerella brassicicola (Duby) Oudem. Trans. Brit. Mycol. Soc. 44: 253-264.
Cullington, J. E. 1995. Studies into the biology and epidemiology of Mycosphaerella brassicicola, the ringspot pathogen of brassicas. Ph.D. thesis. University of Birmingham, Birmingham,UK.
Götz, M., Zornbach, W., & Boyle, C. (1993). Life cycle of Mycosphaerella brassicicola (Duby) Lindau and ascospore production in vitro. Journal of Phytopathology, 139(4), 298-308.
Kennedy, Wakeham, & Cullington. (1999). Production and immunodetection of ascospores of Mycosphaerella brassicicola: ringspot of vegetable crucifers. Plant Pathology, 48(3), 297-307.
Jackson, G. (2020). Cabbage ring spot (Mycosphaerella brassicicola) [Fact sheet]. Pacific Pests, Pathogens & Weeds.
Köhl, J., Vlaswinkel, M., Groenenboom‐de Haas, B. H., Kastelein, P., van Hoof, R. A., van der Wolf, J. M., & Krijger, M. (2011). Survival of pathogens of Brussels sprouts (Brassica oleracea Gemmifera Group) in crop residues. Plant Pathology, 60(4), 661–670.
Kennedy, R. (2004, May 24). Brassicas: Development of a rapid field based immunomonitoring assay and its use in controlling disease establishment in transplanted crops (Project No. FV 233). Annual project report.
Dixon, G. R. (1981). Pathogens of crucifer crops. In Vegetable crop diseases (pp. 112-156). London: Palgrave Macmillan UK.
Kurose, D., Evans, H.C., Djeddour, D.H., Cannon, P.F., Furuya, N., and Tsuchiya, K. 2009. Systematics of Mycosphaerella species associated with the invasive weed Fallopia japonica, including the potential biological control agent M. polygoni-cuspidati. Mycoscience 50: 179-189.
Brassica rapa
chinese cabbage, turnip
No
MYCOBR-2, MYCOBR-3, MYCOBR-4, MYCOBR-6, MYCOBR-7, MYCOBR-8, MYCOBR-9, MYCOBR-10, MYCOBR-11, MYCOBR-12
No references found indicating seed is a pathway. Debris is the most common source of inoculum. Crop debris associated with the seed may carry fungal spores.
Biological, Chemical, and Cultural
Control relies on clean seedbeds, proper fertilisation, and hot water treatment. Chemical sprays and resistant cultivars can also help reduce disease.
MYCOBR-5, MYCOBR-12
2025-09-29 11:55:09
Crous, P.W., Phillips, A.J.L., and Baxter, A.P. 2000. Phytopathogenic Fungi from South Africa. Department of Plant Pathology, University of Stellenbosc 358 pages.
Wakeham, A. J., and Kennedy, R. 2010. Risk Assessment Methods for the Ringspot Pathogen Mycosphaerellabrassicicolain Vegetable Brassica Crops, Plant Disease 94: 851-859
Dring, D.M. 1961. Studies on Mycosphaerella brassicicola (Duby) Oudem. Trans. Brit. Mycol. Soc. 44: 253-264.
Cullington, J. E. 1995. Studies into the biology and epidemiology of Mycosphaerella brassicicola, the ringspot pathogen of brassicas. Ph.D. thesis. University of Birmingham, Birmingham,UK.
Götz, M., Zornbach, W., & Boyle, C. (1993). Life cycle of Mycosphaerella brassicicola (Duby) Lindau and ascospore production in vitro. Journal of Phytopathology, 139(4), 298-308.
Kennedy, Wakeham, & Cullington. (1999). Production and immunodetection of ascospores of Mycosphaerella brassicicola: ringspot of vegetable crucifers. Plant Pathology, 48(3), 297-307.
Jackson, G. (2020). Cabbage ring spot (Mycosphaerella brassicicola) [Fact sheet]. Pacific Pests, Pathogens & Weeds.
Köhl, J., Vlaswinkel, M., Groenenboom‐de Haas, B. H., Kastelein, P., van Hoof, R. A., van der Wolf, J. M., & Krijger, M. (2011). Survival of pathogens of Brussels sprouts (Brassica oleracea Gemmifera Group) in crop residues. Plant Pathology, 60(4), 661–670.
Kennedy, R. (2004, May 24). Brassicas: Development of a rapid field based immunomonitoring assay and its use in controlling disease establishment in transplanted crops (Project No. FV 233). Annual project report.
Dixon, G. R. (1981). Pathogens of crucifer crops. In Vegetable crop diseases (pp. 112-156). London: Palgrave Macmillan UK.
Kurose, D., Evans, H.C., Djeddour, D.H., Cannon, P.F., Furuya, N., and Tsuchiya, K. 2009. Systematics of Mycosphaerella species associated with the invasive weed Fallopia japonica, including the potential biological control agent M. polygoni-cuspidati. Mycoscience 50: 179-189.
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