Management of clubroot (Plasmodiophora brassicae) on canola (Brassica napus) in western Canada

  title={Management of clubroot (Plasmodiophora brassicae) on canola (Brassica napus) in western Canada},
  author={S. F. Hwang and Ronald J. Howard and Stephen E. Strelkov and Bruce D. Gossen and Gary Peng},
  journal={Canadian Journal of Plant Pathology},
  pages={49 - 65}
Abstract Clubroot, caused by Plasmodiophora brassicae, has emerged as a serious disease threatening the canola production industry in western Canada. This review summarizes results from studies, conducted since 2007, on the development of effective strategies for the management of clubroot in canola. Several options have been proposed for the control of this disease in infested fields, including liming the soil to increase soil pH, crop rotation with non-hosts and bait crops, manipulating the… 

Evaluation of Host Resistance, Hydrated Lime, and Weed Control to Manage Clubroot in Canola

Plasmodiophora brassicae Wor. is a soilborne parasite causing clubroot of canola (Brassica napus L.), a serious disease managed mostly by planting clubroot-resistant (CR) cultivars. Recently, new

Effect of clubroot (Plasmodiophora brassicae) on yield of canola (Brassica napus)

Abstract Clubroot, caused by Plasmodiophora brassicae, is a major disease of canola (Brassica napus). This study evaluated the effect of clubroot development on the yield of this crop under field and

Control Strategies of Clubroot Disease Caused by Plasmodiophora brassicae

The clubroot disease caused by the soil-borne pathogen Plasmodiophora brassicae is one of the most important diseases of cruciferous crops worldwide. As with many plant pathogens, the spread is

Belowground Defence Strategies Against Clubroot (Plasmodiophora brassicae)

The major focus will, however, be on biocontrol of clubroot by either endophytic organisms or by plant strengtheners or plant growth regulators; and some mechanisms behind it, independent of which host plant was employed, will be discussed.

Clubroot Caused by Plasmodiophora brassicae Wor.: a Review of Emerging Serious Disease of Oilseed Rape in the Czech Republic

The pathogen is probably widely spread in the whole country, its incidence depends on suitable weather conditions and the amounts of inoculum and its distribution are not sufficient yet, but this is just the initial stage of colonisation.

Virulence and pathotype classification of Plasmodiophora brassicae populations collected from clubroot resistant canola (Brassica napus) in Canada

A total of 17 pathotypes were detected using the CCD Set, compared with five pathotypes using the system of Williams and Somé et al., suggesting that the C CD Set has a greater differentiating capacity.

Effect of host and non‐host crops on Plasmodiophora brassicae resting spore concentrations and clubroot of canola

The rotations that included non-host crops of barley, pea or oat reduced clubroot severity and resting spore concentrations, and increased yield, compared with continuous cropping of either resistant or susceptible canola.

Effect of Plasmodiophora brassicae resting spore concentration and crop rotation on growth of clubroot-resistant crops

It was found that a portion of the resting spore population is long-lived, but most (>99%) spores survive for only 1–2 years, and higher concentrations of resting spores resulted in reduced plant growth and delayed development in resistant canola and napa cabbage.

Response of Brassica napus to Plasmodiophora brassicae Involves Salicylic Acid-Mediated Immunity: An RNA-Seq-Based Study

This study showed the importance of SA in triggering immune responses and suggested some key resistance and susceptibility factors that can be used in future studies for resistance breeding through gene-editing approaches.

Virulence and inoculum density‐dependent interactions between clubroot resistant canola (Brassica napus) and Plasmodiophora brassicae

This study shows the potential to develop a unique disease profile for emergent clubroot pathotypes and shows a useful range of spore densities at which to study new P. brassicae strains.



Integrated Control of Clubroot

Clubroot caused by Plasmodiophora brassicae affects the Brassicaceae family of plants, including many important vegetable and broadacre crops, and a multifaceted or integrated approach is being used to manage clubroot.


Clubroot of crucifers (Plasmodiophora brassicae Woronin) is endemic in most organic soils in Ontario, Canada and chemical control of clubroot is inconsistent.

Assessment of bait crops to reduce inoculum of clubroot (Plasmodiophora brassicae) of canola

Assessment of bait crops to reduce inoculum of clubroot of canola found resting spore populations were often slightly reduced following two cycles of cruciferous crops relative to non-cruciferous host crops and non-host crops (barley, wheat).

Identification of clubroot of crucifers on canola (Brassica napus) in Alberta

Clubroot, caused by Plasmodiophora brassicae, was detected for the first time on canola in Alberta and can only be managed with extended intervals between host crops because other management strategies may be too expensive to implement or are of limited effectiveness.

Clubroot of cruciferous crops – new perspectives on an old disease

An unprecedented research effort is underway in western Canada to develop a better understanding of the biology and management of clubroot, especially in the canola production systems on the Prairies.

The Occurrence and Economic Impact of Plasmodiophora brassicae and Clubroot Disease

  • G. Dixon
  • Biology
    Journal of Plant Growth Regulation
  • 2009
The significance of Plasmodiophora brassicae Woronin and clubroot disease which it incites in members of the family Brassicaceae is reviewed as the focus for this special edition of the Journal of

Reaction to Plasmodiophora brassicae Pathotype 6 in Lines of Brassica Vegetables, Wisconsin Fast Plants, and Canola

The lines of Shanghai pak choy and Chinese flowering cabbage were highly susceptible to clubroot, but each of the clubroot- resistant cultivars of napa cabbage, 'Deneko', 'Bilko', and 'Yuki', was highly resistant to pathotype 6, which can be exploited in future studies of clubroot reaction in canola.

Plasmodiophora brassicae: a review of an emerging pathogen of the Canadian canola (Brassica napus) crop.

This review focuses on recent studies into the pathogenic diversity of P. brassicae populations, mechanisms of pathogenesis and resistance, and the development of diagnostic tests for pathogen detection and quantification.

Virulence and spread of Plasmodiophora brassicae [clubroot] in Alberta, Canada

Virulence levels overall were highest for the P. brassicae populations from central Alberta, which may help to explain the rapid increase in clubroot observed in this province.

Occurrence of Plasmodiophora brassicae in Finnish turnip rape and oilseed rape fields

According to the survey, cultivation frequency of cruciferous plants is the most important factor affecting clubroot occurrence and severity, and high temperature and moisture during the early growth period seem to favour disease development and can cause significant yield losses.