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Leptosphaeria maculans isolates with variations in AvrLm1 and AvrLm4 effector genes induce differences in defence responses but not in resistance phenotypes in cultivars carrying the Rlm7 gene
(2023-03-28)
BACKGROUND The phoma stem canker pathogen Leptosphaeria maculans is one of the most widespread and devastating pathogens of oilseed rape (Brassica napus) in the world. Pathogen colonization is stopped by an interaction of ...
Understanding R Gene-Mediated Resistance Against Leptosphaeria maculans for Effective Control of Phoma Stem Canker in Oilseed Rape
(2020-01-28)
This project aims to improve understanding of R gene-mediated resistance against Leptosphaeria maculans for effective control of phoma stem canker in oilseed rape. This was achieved through three objectives by (i) monitoring ...
Effectiveness of Rlm7 resistance against Leptosphaeria maculans (phoma stem canker) in UK winter oilseed rape cultivars
(2018-08)
The Rlm7 gene in Brassica napus is an important source of resistance for control of phoma stem canker on oilseed rape caused by the fungus Leptosphaeria maculans. This study shows the first report of L. maculans isolates ...
Identification of Avr Alleles in Leptosphaeria maculans Isolates from Different Oilseed Rape Cultivars
(University of Hertfordshire, 2014-12-22)
This report describes a survey of the regional distribution of races of Leptosphaeria maculans done by characterising isolates from phoma leaf spot samples taken from different oilseed rape cultivars at different sites in ...
The race structure of Leptosphaeria maculans (phoma stem canker) in the United Kingdom
(INRAE, 2012-10)
Phoma stem canker (Leptosphaeria maculans) is the main disease problem on winter oilseed rape (Brassica napus) in the UK, causing losses of > £100M p.a., despite use of fungicides. Two types of resistance to L. maculans ...
Fitness cost of virulence differs between the AvrLm1 and AvrLm4 loci in Leptosphaeria maculans (phoma stem canker of oilseed rape)
(2010-02)
To investigate whether the reported fitness cost of virulence at the AvrLm4 locus in Leptosphaeria maculans is common to other loci, near-isogenic (NI) isolates differing at AvrLm1 locus were produced in vitro. Fitness of ...