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Submission

Leptosphaeria maculans on Brassica spp.

  • Credits / Owner: Nicole Calliou, SGS
  • Submission date: 2024-06-13 19:51:20
  • Submission ID: #11
<em>Leptosphaeria maculans</em> on <em>Brassica spp.</em>
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Leptosphaeria maculans on Brassica spp.

Image credits: Nicole Calliou, SGS

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Symptoms of Blackleg / Leptosphaeria maculans on Brassica spp.

Pathogen

Scientific name

Leptosphaeria maculans

Genus

Leptosphaeria

EPPO code

LEPTMA

Common name

Blackleg

Synonyms

Phoma lingam

Crop

Brassica spp.

More about Leptosphaeria maculans

Submission

Description

Loose growing silver white mycelium and pycnidia primordia of Leptosphaeria on seed and substrate. Pycnidia are relatively large, about 250 um, with papilla, sometimes developed as a neck and often has purple (amethyst) exudate.


Sterilant: None
Sterilant time: N/A
Growth time: 7 days
Lighting: 3:1 (fluorescent:nUV), within 60cm of light. Alternating light/dark in 12 hr intervals
Agar: Blotter paper moistened with water
Agar brand: N/A
Sample origin: Canada