Crop rotation, cultivar resistance, and fungicides/biofungicides for managing clubroot (Plasmodiophora brassicae) on canola

@article{Peng2014CropRC,
  title={Crop rotation, cultivar resistance, and fungicides/biofungicides for managing clubroot (Plasmodiophora brassicae) on canola},
  author={Gary Peng and Rachid Lahlali and Sheau-Fang Hwang and Denis Pageau and Russell K. Hynes and Mary Ruth Mcdonald and Bruce D. Gossen and Stephen E. Strelkov},
  journal={Canadian Journal of Plant Pathology},
  year={2014},
  volume={36},
  pages={112 - 99}
}
Abstract Select biofungicides and fungicides, used alone or with cultivar resistance or crop rotation, were assessed for their potential in integrated management of clubroot disease. The synthetic fungicides pentachloronitrobenzene, fluazinam and cyazofamid showed activities against Plasmodiophora brassicae. The biofungicides Serenade® and Prestop® also suppressed the disease on canola via antibiosis and induced host resistance under controlled-environment conditions. Granular and seed… 

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

TLDR
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.

Influence of Soil-Borne Inoculum of Plasmodiophora brassicae Measured by qPCR on Disease Severity of Clubroot-Resistant Cultivars of Winter Oilseed Rape (Brassica napus L.)

TLDR
The recommendation is to use clubroot-resistant cultivars of OSR as part of Integrated Pest Management in situations where abundance of P. brassicae DNA exceeds 1300 gene copies g−1 soil.

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

TLDR
Genetic resistance to P. brassicae has been shown to be a practical option for the management of clubroot on canola, but resistance stewardship, coupled with crop rotation and appropriate cultural practices, will be required to maintain the performance and durability of genetic resistance.

Effect of canola (Brassica napus) cultivar rotation on Plasmodiophora brassicae pathotype composition

TLDR
It is suggested that continuous planting of CR canola favours a rapid proliferation of virulent pathotypes of P. brassicae, as indicated by the increases in pathotype 5X observed in this study.

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

TLDR
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.

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

TLDR
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.

Crop Rotation with Marigold Promotes Soil Bacterial Structure to Assist in Mitigating Clubroot Incidence in Chinese Cabbage

Clubroot caused by Plasmodiophora brassicae is an economically important soilborne disease of Chinese cabbage worldwide. Integrated biological control through crop rotation is considered a good
...

References

SHOWING 1-10 OF 117 REFERENCES

Effect of Host Resistance and Fungicide Application on Clubroot Pathotype 6 in Green Cabbage and Napa Cabbage

TLDR
The clubroot resistance available in several cultivars of green and napa cabbage was effective against P. brassicae pathotype 6 and was more effective in reducing clubroot than application of fluazinam.

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

TLDR
Genetic resistance to P. brassicae has been shown to be a practical option for the management of clubroot on canola, but resistance stewardship, coupled with crop rotation and appropriate cultural practices, will be required to maintain the performance and durability of genetic resistance.

Evidence that the biofungicide Serenade (Bacillus subtilis) suppresses clubroot on canola via antibiosis and induced host resistance.

TLDR
It is possible that antibiosis and induced resistance are involved in clubroot suppression by Serenade, and activity against the infection from both primary and secondary zoospores of P. brassicae may be required for maximum efficacy against clubroot.

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

TLDR
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).

Suppression of clubroot by Clonostachys rosea via antibiosis and induced host resistance

TLDR
It is concluded that the biofungicide Prestop suppressed clubroot on canola at least via root colonization and induced systemic resistance (ISR), and the latter may be through the modu-lation of phenylpropanoid and jasmonic acid/ethylene metabolic pathways elicited by the fungus.

Effect of Soil Application of AG3 Phosphonate on the Severity of Clubroot of Bok Choy and Cabbage Caused by Plasmodiophora brassicae.

TLDR
Field trials were carried out to test the effect of phosphonate fungicide (AG3) on the severity of clubroot of bok choy and cabbage and cabbage in commercial Ontario muck fields with a clubroot history.

Clubroot in canola and cabbage in relation to soil temperature, plant growth and host resistance

TLDR
Air and soil degree days and rainfall were used as metrics for estimating clubroot development, with only limited success, and a delayed disease phenotype in ‘B-2819’ may indicate a quantitative resistance genotype that could be exploited in research on resistance genes and breeding.

Colonization by two isolates of Plasmodiophora brassicae with differing pathogenicity on a clubroot-resistant cultivar of Chinese cabbage (Brassica rapa L. subsp. pekinensis)

A commercial clubroot-resistant F1 cultivar of Chinese cabbage (Brassica rapa L. subsp. pekinensis), Kukai 70, is resistant to an isolate of populations of Plasmodiophora brassicae from Hagi (HG)

Status and Perspectives of Clubroot Resistance Breeding in Crucifer Crops

TLDR
Future efforts for breeding P. brassicae resistance will focus on durability by broadening the genetic basis of clubroot resistance by using either natural variation or transgenic strategies.

Soil treatments and amendments for amelioration of clubroot of canola

TLDR
Treatment of the soil with Terraclor (quintozene) reduced clubroot severity and increased plant growth (canopy coverage and plant height) and seed yield in severely infested soils, and among the soil amendment treatments, wood ash at 7.5 L ha−1 increased canopy coverage and height in 2 of 4 sites years, and yield in 1 of 4 site years.
...