Results 31 to 40 of about 304 (140)

Warm and Wet Autumns Favour Yield Losses of Oilseed Rape Caused by Phoma Stem Canker

Agronomy, 2021
Winter oilseed rape (Brassica napus L.) is the main source of domestic oil in central and northern Europe, bringing profits to farmers, but the plants are often damaged by stem canker, caused by two fungal species belonging to the genus Leptosphaeria ...
Andrzej Brachaczek, Joanna Kaczmarek, Malgorzata Jedryczka   +2 more
doaj   +1 more source

Phytotoxins, Elicitors and Other Secondary Metabolites from Phytopathogenic “Blackleg” Fungi: Structure, Phytotoxicity and Biosynthesis

Natural Product Communications, 2009
The metabolites produced by the fungal species Leptosphaeria maculans and L. biglobosa under different culture conditions, together with their phytotoxic activities are reviewed.
M. Soledade C. Pedras, Yang Yu
doaj   +1 more source

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

Acta Agrobotanica, 2012
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.
Joanna Kaczmarek, Małgorzata Jędryczka
doaj   +1 more source

Patterns of ascospore release in relation to phoma stem canker epidemiology in England (Leptosphaeria maculans) and Poland (Leptosphaeria biglobosa)

European Journal of Plant Pathology, 2005
Experiments over five growing seasons at Rothamsted (1998/99–2002/03), four seasons at Boxworth (1998/99, 1999/2000, 2001/02, 2002/03) in England (Leptosphaeria maculans) and three seasons (1998/99–2000/01) at Poznan in Poland (Leptosphaeria biglobosa) suggest that differences in the development of phoma stem canker epidemics between England and Poland
Huang, Y-J., Fitt, B. D. L., Jedryczka, M., Dakowska, S., West, J. S., Gladders, P., Steed, J. M., Li, Z-Q.   +7 more
openaire   +3 more sources

Pseudothecial maturation and ascospore release of Leptosphaeria maculans and L. biglobosa in south-east Poland

Acta Agrobotanica, 2012
Stem canker of brassicas is a severe disease of oilseed rape in Australia, Canada and Europe, including Poland. The disease is caused by Leptosphaeria maculans and L. biglobosa - two pathogens belonging to the class Dothideomycetes. The species differ in
Adam Dawidziuk, Idalia Kasprzyk, Joanna Kaczmarek, Małgorzata Jędryczka   +3 more
doaj   +1 more source

Determining frequencies of fungicide resistance in Leptosphaeria maculans that render demethylation inhibitor fungicides ineffective in the field

Pest Management Science, EarlyView.
As little as 1–10% of the population is needed to be resistant for demethylation inhibitor fungicides to be rendered ineffective. Following a single round of selection, the frequency increases by more than 15% with limited fitness penalty detected when no selection is present.
Alec J McCallum, Alexander Idnurm, Stephen J Marcroft, Andrew H Ware, Elizabeth M Sheedy, Angela P Van de Wouw   +5 more
wiley   +1 more source

Loop-mediated isothermal amplification as a good tool to study changing Leptosphaeria populations in oilseed rape plants and air samples

Acta Agrobotanica, 2014
LAMP is an innovative, simple, rapid, specific and cost-effective nucleic acid amplification method. Due to the use of a special enzyme – GspSSD polymerase, the reaction takes a short time and can be performed at isothermal conditions.
Małgorzata Jędryczka, Adam Burzyński, Andrzej Brachaczek, Wojciech Langwiński, Peiling Song, Joanna Kaczmarek   +5 more
doaj   +1 more source

Disease control in oilseed rape: Current insights and perspectives for next‐generation integrated pest management

Pest Management Science, EarlyView.
Winter oilseed rape in Europe suffers frequent pathogen losses. This review outlines key integrated pest management (IPM) strategies, rotation, residue and tillage management, optimized sowing, resistance, and targeted fungicides supported by forecasting.
Jon S West, Małgorzata Jędryczka, Nazanin Zamani‐Noor   +2 more
wiley   +1 more source

Experimental dissection of phenotypic variation for quantitative disease resistance in canola (Brassica napus) – Leptosphaeria maculans interactions

Pest Management Science, EarlyView.
This graphical abstract illustrates how quantitative resistance to Leptosphaeria maculans in canola is experimentally estimated through multi‐environment replicated trials measuring crown canker severity. Genotype, environment and pathogen sources feed into phenotyping, followed by variance partitioning using mixed models and beta regression to ...
Luke G Barrett, Mohamed CM Zakeel, Angela P Van der Wouw, Rebecca Maher, Kurt D Lindbeck, Susan J Sprague   +5 more
wiley   +1 more source

Decreased DMI sensitivity of Plenodomus biglobosus (phoma of oilseed rape) associated with CYP51 substitution G476S

Pest Management Science, EarlyView.
Here, we report for the first time a target site mutation in the CYP51 gene of the oilseed rape phoma stem canker fungus Plenodomus biglobosus (Leptosphaeria biglobosa) that is associated with decreased sensitivity to sterol demethylation inhibitor fungicides.
Kevin M King, Liza M González‐Rodríguez, Joanna Kaczmarek, Małgorzata Jędryczka, Jonathan S West   +4 more
wiley   +1 more source