Characterization of two coexisting pathogen populations of Leptosphaeria spp., the cause of stem canker of brassicas

Joanna Kaczmarek, Małgorzata Jędryczka

Abstract


Stem canker of brassicas, also known as blackleg is the most damaging disease of many Brassicaceae. The disease is caused by Leptosphaeria maculans (Desm.) Ces et de Not. and L. biglobosa sp. nov., Shoemaker & Brun, which coexist in plants and resulting in disease symptoms and decreased yield, quantity and quality of cultivated vegetables and oilseed rape. The paper presents taxonomic relationships between these coexisting pathogen species, describes particular stages of their life cycles, summarizes the differences between the species, and reviews methods for their identification.

Keywords


ascospore; stem canker; Brassica napus; Leptosphaeria maculans; Leptosphaeria biglobosa; oilseed rape; pseudothecium

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DOI: https://doi.org/10.5586/aa.2011.012

Journal ISSN:
  • 2300-357X (online)
  • 0065-0951 (print; ceased since 2016)
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Publisher
Polish Botanical Society