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Detached and attached Arabidopsis leaf assays reveal distinctive defense responses against hemibiotrophic Colletotrichum spp.
- G. Liu, R. Kennedy, +4 authors Yangdou Wei
- Biology, MedicineMolecular plant-microbe interactions : MPMI
- 17 September 2007
In intact Arabidopsis plants, both the salicylic acid- and ethylene-dependent pathways were required for resistance to C. higginsianum and were associated with induced expression of pathogenesis-related genes PR1 and PDF1 and appeared to be uncoupled from these defense pathways and more closely associated with senescence.
Molecular characterization of a serine protease Pro1 from Plasmodiophora brassicae that stimulates resting spore germination.
Serine protease gene (PRO1) was cloned from P. brassicae and its molecular characteristics were investigated, indicating that Pro1 may play a role during clubroot pathogenesis by stimulating resting spore germination through its proteolytic activity.
Crop rotation, cultivar resistance, and fungicides/biofungicides for managing clubroot (Plasmodiophora brassicae) on canola
A 2-year interval with non-hosts between canola crops, together with use of resistant cultivars, is recommended to reduce the inoculum load of P. brassicae in soil and achieve maximum yields of canola.
Influence of cultivar resistance and inoculum density on root hair infection of canola (Brassica napus) by Plasmodiophora brassicae
It appears that examination of root hair infection by microscopy in a bait crop of susceptible canola could serve as a useful tool for estimating P. brassicae inoculum levels in soil.
Potential biological control of clubroot on canola and crucifer vegetable crops
Under growth cabinet conditions, a soil-drench application of formulated biocontrol agents Bacillus subtilis and Gliocladium catenulatum reduced clubroot severity by more than 80% relative to pathogen-inoculated controls on a highly susceptible canola cultivar, similar to that of the fungicides fluazinam and cyazofamid.
Assessment of the impact of resistant and susceptible canola on Plasmodiophora brassicae inoculum potential
The cropping of a resistant cultivar reduced clubroot severity, while the presence of susceptible volunteer canola increased inoculum potential, and Quantitative PCR was a reliable tool for the quantification of root hair infection.
Evidence that the biofungicide Serenade (Bacillus subtilis) suppresses clubroot on canola via antibiosis and induced host resistance.
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.
Fine mapping of Rcr1 and analyses of its effect on transcriptome patterns during infection by Plasmodiophora brassicae
The CR gene Rcr1 and closely linked markers will be highly useful for breeding new resistant canola cultivars and may help judicious use of CR genes with complementary resistance mechanisms for durable clubroot resistance.
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.
Genetics and breeding for clubroot resistance in Canadian spring canola (Brassica napus L.)
Abstract Clubroot disease caused by Plasmodiophora brassicae Woronin is a concern to the canola (Brassica napus L.) growers in Canada. A crop management strategy that includes deployment of genetic…