Menadione sodium bisulphite: a novel plant defence activator which enhances local and systemic resistance to infection by Leptosphaeria maculans in oilseed rape

A - Papers appearing in refereed journals

Borges, A. A., Cools, H. J. and Lucas, J. A. 2003. Menadione sodium bisulphite: a novel plant defence activator which enhances local and systemic resistance to infection by Leptosphaeria maculans in oilseed rape. Plant Pathology. 52 (4), pp. 429-436.

AuthorsBorges, A. A., Cools, H. J. and Lucas, J. A.
Abstract

Pretreatment of the first true leaves of oilseed rape plants (Brassica napus cv. Bristol) with menadione sodium bisulphite (MSB) locally and systemically induced resistance, as shown by reduced lesion size and number, to infection by the fungal pathogen Leptosphaeria maculans, the causal agent of stem canker. Using a known systemic activator of salicylic acid-dependent PR-1 induction, acibenzolar-S-methyl (BTH; S-methylbenzo[1,2,3]thiadiazole-7-carbothiate) as a comparison, real-time PCR expression analysis of genes encoding a pathogenesis-related protein 1 (PR-1) and an ascorbate peroxidase (APX) demonstrated a systemic enhancement of APX expression in MSB-pretreated plants, with no effect on PR-1 expression, suggesting augmented reactive oxygen species production in MSB-pretreated plants. The results demonstrate MSB to be an effective resistance activator in oilseed rape, and potentially useful for the control of stem canker.

KeywordsAgronomy; Plant Sciences
Year of Publication2003
JournalPlant Pathology
Journal citation52 (4), pp. 429-436
Digital Object Identifier (DOI)doi:10.1046/j.1365-3059.2003.00877.x
Open accessPublished as non-open access
Funder project or code422
507
ISSN00320862
PublisherWiley

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