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The Identification of Two New Races of Pyrenophora tritici-repentis from the Host Center of Diversity Confirms a One-to-One Relationship in Tan Spot of Wheat.
TLDR
The identification of races 7 and 8 complete the theoretical maximum number of races that can be differentiated by three loci in the host (2(3) = 8), assuming a one-to-one relationship and appears that the wheat/P.
Characterization of a Host-Specific Protein Toxin (Ptr ToxB) from Pyrenophora tritici-repentis
TLDR
A chlorosis-inducing, host-specific toxin, termed Ptr ToxB (formerly Ptr chlorosis toxin), was purified from the culture filtrates of a race 5 isolate of P. tritici-repentis and was shown to be proteinaceous in nature.
Characterization of Plasmodiophora brassicae populations from Alberta, Canada
TLDR
To characterize the virulence of the pathogen in the province, field populations from a number of locations in the Edmonton region were tested on the two most widely used sets of differential hosts, those of P.H. Williams and the European Clubroot Differential (ECD) series.
Clubroot of cruciferous crops – new perspectives on an old disease
TLDR
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.
Plasmodiophora brassicae: a review of an emerging pathogen of the Canadian canola (Brassica napus) crop.
TLDR
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.
The compact genome of the plant pathogen Plasmodiophora brassicae is adapted to intracellular interactions with host Brassica spp
TLDR
The P. brassicae genome sequence reveals a compact genome, a dependency of the pathogen on its host for some essential nutrients and a potential role in the regulation of host plant cytokinin and auxin, and a significant reduction in intergenic space.
Pathotype Classification of Plasmodiophora brassicae and its Occurrence in Brassica napus in Alberta, Canada
TLDR
A field survey for clubroot of crucifers, caused by Plasmodiophora brassicae, was conducted in the regions surrounding Edmonton, Alberta, Canada, in 2005 and indicated no significant differences in the virulence of the 10 populations tested, suggesting that they are relatively homogenous.
Host–parasite interactions in tan spot [Pyrenophora tritici-repentis] of wheat
TLDR
It is proposed that the gene-for-gene model can be extended, as previously predicted by others, to pathosystems involving multiple host-specific toxins, and the relationship between toxin production and the evolution of new races is discussed.
Comparative virulence of chlorosis-inducing races of Pyrenophora tritici-repentis
TLDR
The existence of a sixth race of P. tritici-repentis is reported and the chlorosis symptoms produced by various isolates of this pathogen representing different races are compared, suggesting that this isolate be classified in a new race, designated race 6.
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