Leptosphaeria maculans Ces. & De Not.
(Brassica Canker, Black Leg and Dry Rot - causative organism, Brassica Blackleg Disease)

Interactions where Leptosphaeria maculans is the dominant partner and gains from the process

The following relationships have been collated from the published literature (see 'Interaction References').

Stage Summary Taxon Vernacular Classification References Darwin Classification of Active Taxon Active Taxon Active Vernacular Active Taxon Uncertain Active State Active Part Active Stage Relationship Relationship Uncertain Relationship Geography Darwin Classification of Passive Taxon Passive Taxon Passive Vernacular Passive Taxon Uncertain Passive State Passive Part Passive Stage Passive Taxon's significance to Active Taxon Indoors etc Season
Phoma coelomycetous anamorph pycnidium of Phoma coelomycetous anamorph infects and damages live, lesioned stem Alliaria petiolata Garlic Mustard, Jack By The Hedge, Hedge Garlic Brassicales: Brassicaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
 /Fungi/Ascomycota/Dothideomycetes/Pleosporales/Leptosphaeriaceae/Leptosphaeria maculans/Leptosphaeria maculansbrassica canker, black leg and dry rot (causative organism), brassica blackleg diseasepycnidiumPhoma coelomycetous anamorph Foodplant / pathogen /Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Alliaria petiolata/Alliaria petiolatagarlic mustard, Jack by the hedge, hedge garliclive, lesionedstem
Phoma coelomycetous anamorph pycnidium of Phoma coelomycetous anamorph infects and damages live, lesioned leaf Alliaria petiolata Garlic Mustard, Jack By The Hedge, Hedge Garlic Brassicales: Brassicaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
 /Fungi/Ascomycota/Dothideomycetes/Pleosporales/Leptosphaeriaceae/Leptosphaeria maculans/Leptosphaeria maculansbrassica canker, black leg and dry rot (causative organism), brassica blackleg diseasepycnidiumPhoma coelomycetous anamorph Foodplant / pathogen /Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Alliaria petiolata/Alliaria petiolatagarlic mustard, Jack by the hedge, hedge garliclive, lesionedleaf
pseudothecium (immersed) immersed pseudothecium is saprobic on dead, often blackened stem Alliaria petiolata Garlic Mustard, Jack By The Hedge, Hedge Garlic Brassicales: Brassicaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
 /Fungi/Ascomycota/Dothideomycetes/Pleosporales/Leptosphaeriaceae/Leptosphaeria maculans/Leptosphaeria maculansbrassica canker, black leg and dry rot (causative organism), brassica blackleg diseaseimmersedpseudothecium Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Alliaria petiolata/Alliaria petiolatagarlic mustard, Jack by the hedge, hedge garlicdead, often blackenedstem (5-10)
infects and damages live Armoracia rusticana Horse Radish, Horse-radish Brassicales: Brassicaceae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
 /Fungi/Ascomycota/Dothideomycetes/Pleosporales/Leptosphaeriaceae/Leptosphaeria maculans/Leptosphaeria maculansbrassica canker, black leg and dry rot (causative organism), brassica blackleg disease Foodplant / pathogen /Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Armoracia rusticana/Armoracia rusticanahorse radish, horse-radishlive
Phoma coelomycetous anamorph pycnidium of Phoma coelomycetous anamorph causes spots on live stem of seedling Brassica napus ssp napobrassica Rutabaga Brassicales: Brassicaceae Leptosphaeria maculans, Punithalingam, E. & Holliday, P., 1972
 /Fungi/Ascomycota/Dothideomycetes/Pleosporales/Leptosphaeriaceae/Leptosphaeria maculans/Leptosphaeria maculansbrassica canker, black leg and dry rot (causative organism), brassica blackleg diseasepycnidiumPhoma coelomycetous anamorph Foodplant / spot causer /Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Brassica napus subsp. napobrassica/Brassica napus subsp. napobrassicarutabagalivestemseedling
Phoma coelomycetous anamorph pycnidium of Phoma coelomycetous anamorph causes spots on live leaf of seedling Brassica napus ssp napobrassica Rutabaga Brassicales: Brassicaceae Leptosphaeria maculans, Punithalingam, E. & Holliday, P., 1972
 /Fungi/Ascomycota/Dothideomycetes/Pleosporales/Leptosphaeriaceae/Leptosphaeria maculans/Leptosphaeria maculansbrassica canker, black leg and dry rot (causative organism), brassica blackleg diseasepycnidiumPhoma coelomycetous anamorph Foodplant / spot causer /Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Brassica napus subsp. napobrassica/Brassica napus subsp. napobrassicarutabagaliveleafseedling
Phoma coelomycetous anamorph pycnidium of Phoma coelomycetous anamorph causes spots on live cotyledon of seedling Brassica napus ssp napobrassica Rutabaga Brassicales: Brassicaceae Leptosphaeria maculans, Punithalingam, E. & Holliday, P., 1972
 /Fungi/Ascomycota/Dothideomycetes/Pleosporales/Leptosphaeriaceae/Leptosphaeria maculans/Leptosphaeria maculansbrassica canker, black leg and dry rot (causative organism), brassica blackleg diseasepycnidiumPhoma coelomycetous anamorph Foodplant / spot causer /Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Brassica napus subsp. napobrassica/Brassica napus subsp. napobrassicarutabagalivecotyledonseedling
Phoma coelomycetous anamorph pycnidium of Phoma coelomycetous anamorph causes spots on live, purplish, wilted, non-dropping leaf Brassica napus ssp napobrassica Rutabaga Brassicales: Brassicaceae Leptosphaeria maculans, Punithalingam, E. & Holliday, P., 1972
 /Fungi/Ascomycota/Dothideomycetes/Pleosporales/Leptosphaeriaceae/Leptosphaeria maculans/Leptosphaeria maculansbrassica canker, black leg and dry rot (causative organism), brassica blackleg diseasepycnidiumPhoma coelomycetous anamorph Foodplant / spot causer /Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Brassica napus subsp. napobrassica/Brassica napus subsp. napobrassicarutabagalive, purplish, wilted, non-droppingleaf
infects and damages live, cankered root (exposed part) Brassica napus ssp rapifera Swede Brassicales: Brassicaceae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
 /Fungi/Ascomycota/Dothideomycetes/Pleosporales/Leptosphaeriaceae/Leptosphaeria maculans/Leptosphaeria maculansbrassica canker, black leg and dry rot (causative organism), brassica blackleg disease Foodplant / pathogen /Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Brassica napus subsp. rapifera/Brassica napus subsp. rapiferaswedelive, cankeredroot (exposed part)
infects and damages live, cankered stem (lower) Brassica oleracea Cabbages Etc. Brassicales: Brassicaceae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
 /Fungi/Ascomycota/Dothideomycetes/Pleosporales/Leptosphaeriaceae/Leptosphaeria maculans/Leptosphaeria maculansbrassica canker, black leg and dry rot (causative organism), brassica blackleg disease Foodplant / pathogen /Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Brassica oleracea/Brassica oleraceacabbages etc.live, cankeredstem (lower)
Phoma coelomycetous anamorph pycnidium of Phoma coelomycetous anamorph causes spots on live stem of seedling Brassica oleracea Cabbages Etc. Brassicales: Brassicaceae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
Leptosphaeria maculans, Punithalingam, E. & Holliday, P., 1972
 /Fungi/Ascomycota/Dothideomycetes/Pleosporales/Leptosphaeriaceae/Leptosphaeria maculans/Leptosphaeria maculansbrassica canker, black leg and dry rot (causative organism), brassica blackleg diseasepycnidiumPhoma coelomycetous anamorph Foodplant / spot causer /Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Brassica oleracea/Brassica oleraceacabbages etc.livestemseedling
Phoma coelomycetous anamorph pycnidium of Phoma coelomycetous anamorph causes spots on live, purplish, wilted, non-dropping leaf Brassica oleracea Cabbages Etc. Brassicales: Brassicaceae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
Leptosphaeria maculans, Punithalingam, E. & Holliday, P., 1972
 /Fungi/Ascomycota/Dothideomycetes/Pleosporales/Leptosphaeriaceae/Leptosphaeria maculans/Leptosphaeria maculansbrassica canker, black leg and dry rot (causative organism), brassica blackleg diseasepycnidiumPhoma coelomycetous anamorph Foodplant / spot causer /Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Brassica oleracea/Brassica oleraceacabbages etc.live, purplish, wilted, non-droppingleaf
Phoma coelomycetous anamorph pycnidium of Phoma coelomycetous anamorph causes spots on live leaf of seedling Brassica oleracea Cabbages Etc. Brassicales: Brassicaceae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
Leptosphaeria maculans, Punithalingam, E. & Holliday, P., 1972
 /Fungi/Ascomycota/Dothideomycetes/Pleosporales/Leptosphaeriaceae/Leptosphaeria maculans/Leptosphaeria maculansbrassica canker, black leg and dry rot (causative organism), brassica blackleg diseasepycnidiumPhoma coelomycetous anamorph Foodplant / spot causer /Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Brassica oleracea/Brassica oleraceacabbages etc.liveleafseedling
Phoma coelomycetous anamorph pycnidium of Phoma coelomycetous anamorph causes spots on live cotyledon of seedling Brassica oleracea Cabbages Etc. Brassicales: Brassicaceae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
Leptosphaeria maculans, Punithalingam, E. & Holliday, P., 1972
 /Fungi/Ascomycota/Dothideomycetes/Pleosporales/Leptosphaeriaceae/Leptosphaeria maculans/Leptosphaeria maculansbrassica canker, black leg and dry rot (causative organism), brassica blackleg diseasepycnidiumPhoma coelomycetous anamorph Foodplant / spot causer /Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Brassica oleracea/Brassica oleraceacabbages etc.livecotyledonseedling
Phoma coelomycetous anamorph pycnidium of Phoma coelomycetous anamorph causes spots on live, purplish, wilted, non-dropping leaf Brassica oleracea Cabbages Etc. Brassicales: Brassicaceae Leptosphaeria maculans, Punithalingam, E. & Holliday, P., 1972
 /Fungi/Ascomycota/Dothideomycetes/Pleosporales/Leptosphaeriaceae/Leptosphaeria maculans/Leptosphaeria maculansbrassica canker, black leg and dry rot (causative organism), brassica blackleg diseasepycnidiumPhoma coelomycetous anamorph Foodplant / spot causer /Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Brassica oleracea/Brassica oleraceacabbages etc.live, purplish, wilted, non-droppingleaf
infects and damages live, cankered root (exposed part) Brassica rapa Turnip Brassicales: Brassicaceae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
 /Fungi/Ascomycota/Dothideomycetes/Pleosporales/Leptosphaeriaceae/Leptosphaeria maculans/Leptosphaeria maculansbrassica canker, black leg and dry rot (causative organism), brassica blackleg disease Foodplant / pathogen /Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Brassica rapa/Brassica rapaturniplive, cankeredroot (exposed part)
Phoma coelomycetous anamorph pycnidium of Phoma coelomycetous anamorph causes spots on live stem of seedling Brassica rapa Turnip Brassicales: Brassicaceae Leptosphaeria maculans, Punithalingam, E. & Holliday, P., 1972
 /Fungi/Ascomycota/Dothideomycetes/Pleosporales/Leptosphaeriaceae/Leptosphaeria maculans/Leptosphaeria maculansbrassica canker, black leg and dry rot (causative organism), brassica blackleg diseasepycnidiumPhoma coelomycetous anamorph Foodplant / spot causer /Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Brassica rapa/Brassica rapaturniplivestemseedling
Phoma coelomycetous anamorph pycnidium of Phoma coelomycetous anamorph causes spots on live leaf of seedling Brassica rapa Turnip Brassicales: Brassicaceae Leptosphaeria maculans, Punithalingam, E. & Holliday, P., 1972
 /Fungi/Ascomycota/Dothideomycetes/Pleosporales/Leptosphaeriaceae/Leptosphaeria maculans/Leptosphaeria maculansbrassica canker, black leg and dry rot (causative organism), brassica blackleg diseasepycnidiumPhoma coelomycetous anamorph Foodplant / spot causer /Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Brassica rapa/Brassica rapaturnipliveleafseedling
Phoma coelomycetous anamorph pycnidium of Phoma coelomycetous anamorph causes spots on live cotyledon of seedling Brassica rapa Turnip Brassicales: Brassicaceae Leptosphaeria maculans, Punithalingam, E. & Holliday, P., 1972
 /Fungi/Ascomycota/Dothideomycetes/Pleosporales/Leptosphaeriaceae/Leptosphaeria maculans/Leptosphaeria maculansbrassica canker, black leg and dry rot (causative organism), brassica blackleg diseasepycnidiumPhoma coelomycetous anamorph Foodplant / spot causer /Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Brassica rapa/Brassica rapaturniplivecotyledonseedling
infects and damages live Hesperis matronalis Dame’s Violet, Dame’s-violet Brassicales: Brassicaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
 /Fungi/Ascomycota/Dothideomycetes/Pleosporales/Leptosphaeriaceae/Leptosphaeria maculans/Leptosphaeria maculansbrassica canker, black leg and dry rot (causative organism), brassica blackleg disease Foodplant / pathogen /Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Hesperis matronalis/Hesperis matronalisdame's violet, dame's-violetlive
infects and damages live Raphanus raphanistrum Wild Radish Brassicales: Brassicaceae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
 /Fungi/Ascomycota/Dothideomycetes/Pleosporales/Leptosphaeriaceae/Leptosphaeria maculans/Leptosphaeria maculansbrassica canker, black leg and dry rot (causative organism), brassica blackleg disease Foodplant / pathogen /Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Raphanus raphanistrum/Raphanus raphanistrumwild radishlive
Phoma coelomycetous anamorph pycnidium of Phoma coelomycetous anamorph infects and damages live, lesioned leaf Raphanus raphanistrum ssp maritimus Sea Radish Brassicales: Brassicaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
 /Fungi/Ascomycota/Dothideomycetes/Pleosporales/Leptosphaeriaceae/Leptosphaeria maculans/Leptosphaeria maculansbrassica canker, black leg and dry rot (causative organism), brassica blackleg diseasepycnidiumPhoma coelomycetous anamorph Foodplant / pathogen /Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Raphanus raphanistrum subsp. maritimus/Raphanus raphanistrum subsp. maritimussea radishlive, lesionedleaf
Phoma coelomycetous anamorph pycnidium of Phoma coelomycetous anamorph infects and damages live, lesioned stem Raphanus raphanistrum ssp maritimus Sea Radish Brassicales: Brassicaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
 /Fungi/Ascomycota/Dothideomycetes/Pleosporales/Leptosphaeriaceae/Leptosphaeria maculans/Leptosphaeria maculansbrassica canker, black leg and dry rot (causative organism), brassica blackleg diseasepycnidiumPhoma coelomycetous anamorph Foodplant / pathogen /Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Raphanus raphanistrum subsp. maritimus/Raphanus raphanistrum subsp. maritimussea radishlive, lesionedstem
pseudothecium (immersed) immersed pseudothecium is saprobic on dead, often blackened stem Raphanus raphanistrum ssp maritimus Sea Radish Brassicales: Brassicaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
 /Fungi/Ascomycota/Dothideomycetes/Pleosporales/Leptosphaeriaceae/Leptosphaeria maculans/Leptosphaeria maculansbrassica canker, black leg and dry rot (causative organism), brassica blackleg diseaseimmersedpseudothecium Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Raphanus raphanistrum subsp. maritimus/Raphanus raphanistrum subsp. maritimussea radishdead, often blackenedstem (5-10)
infects and damages live Sinapis arvensis Charlock Brassicales: Brassicaceae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
 /Fungi/Ascomycota/Dothideomycetes/Pleosporales/Leptosphaeriaceae/Leptosphaeria maculans/Leptosphaeria maculansbrassica canker, black leg and dry rot (causative organism), brassica blackleg disease Foodplant / pathogen /Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Sinapis arvensis/Sinapis arvensischarlocklive

Author & YearTitleSource
Buczacki, S. & Harris, K., 1998Pests, Diseases & Disorders of Garden PlantsCollins Photoguide, 2nd edition edition, Collins
Ellis, M.B. & J.P., 1997Microfungi on Land Plants: An Identification Handbook2nd (New Enlarged) edition, 868pp, The Richmond Publishing Co. Ltd
Punithalingam, E. & Holliday, P., 1972Leptosphaeria maculansI.M.I. Descriptions of Pathogenic Fungi and Bacteria CMI Descriptions of Pathenogenic Fungi and Bacteria Sheet 331.

Leptosphaeria maculans (Brassica Canker, Black Leg and Dry Rot - causative organism, Brassica Blackleg Disease) may also be included in 'feeds on' relations listed under the following higher taxa:

Leptosphaeria maculans (Brassica Canker, Black Leg and Dry Rot - causative organism, Brassica Blackleg Disease) may be included in 'fed on by' relations listed under the following higher taxa:

Taxonomic hierarchy:
SpeciesLeptosphaeria maculans (Brassica Canker, Black Leg and Dry Rot - causative organism, Brassica Blackleg Disease)
GenusLeptosphaeria (a genus of ascomycetes)
FamilyLEPTOSPHAERIACEAE (a family of ascomycetes)
OrderPLEOSPORALES (an order of ascomycetes and lichens)
SubclassDOTHIDEOMYCETIDAE (a subclass of fungi)
ClassDOTHIDEOMYCETES (a class of ascomycetes)
SubphylumPEZIZOMYCOTINA (a subphylum of ascomycetes)
PhylumASCOMYCOTA (spore shooters, ascomycete)
KingdomFUNGI (true fungi)
DomainEukaryota (eukaryotes)
LifeBIOTA (living things)
NBNNBN (data.nbn.org.uk) has a distribution map for Leptosphaeria maculans (Brassica Canker, Black Leg and Dry Rot - causative organism, Brassica Blackleg Disease)

Identification Works

Handling & MagnificationAuthorYearTitleSource
Punithalingam, E. & Holliday, P. 1972 Leptosphaeria maculans I.M.I. Descriptions of Pathogenic Fungi and Bacteria CMI Descriptions of Pathenogenic Fungi and Bacteria Sheet 331.

Leptosphaeria maculans (Brassica Canker, Black Leg and Dry Rot - causative organism, Brassica Blackleg Disease) may also be included in identification literature listed under the following higher taxa:

Literature listed under the following higher taxa may be relevant to Leptosphaeria maculans (Brassica Canker, Black Leg and Dry Rot - causative organism, Brassica Blackleg Disease):

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