A comparison of clubroot development and management on canola and Brassica vegetables

References

• Adhikari , K.K.C. 2010 . Effect of temperature, biofungicides and fungicides on clubroot of selected Brassica crops , Guelph , ON : M.Sc. Thesis, University of Guelph .
   Google Scholar
• Adhikari , K.K.C. , McDonald , M.R. and Gossen , B.D. 2012 . Reaction to Plasmodiophora brassicae pathotype 6 in lines of Brassica vegetables, Wisconsin Fast Plants, and canola . HortScience , 47 : 374 – 377 .
   Web of Science ®Google Scholar
• Ahmed , H.U. , Hwang , S.F. , Strelkov , S.E. , Gossen , B.D. , Peng , G. , Howard , R. and Turnbull , G.D. 2011 . Assessment of bait crops to reduce inoculum of clubroot (Plasmodiophora brassicae) of canola . Can. J. Plant Sci. , 91 : 545 – 551 .
   Web of Science ®Google Scholar
• Arie , T. , Koayashi , Y. , Okada , G. , Kono , Y. and Yamaguchi , I. 1998 . Control of soilborne clubroot disease of cruciferous plants by epoxydon from Phoma glomerata . Plant Pathol. , 47 : 743 – 748 .
   Web of Science ®Google Scholar
• BéLec , C. , Tremblay , N. and Coulombe , J. 2004 . Liming and calcium cyanamide for clubroot control in cauliflower . Acta Hortic. , 635 : 41 – 46 .
   Google Scholar
• Buczacki , S.T. 1983 . Plasmodiophora – an interrelationship between biological and practical problems. In S.T. Buczacki (Ed.) Zoosporic Plant Pathogens: A Modern Perspective , 161 – 191 . London : Academic Press. (London) Ltd .
   Google Scholar
• Buczacki , S.T. , Toxopeus , H. , Mattusch , P. , Johnston , T.D. , Dixon , G.R. and Hobolth , L.A. 1975 . Study of physiologic specialization in Plasmodiophora brassicae: proposals for attempted rationalization through an international approach . Trans. Br. Mycol. Soc. , 65 : 295 – 303 .
   Web of Science ®Google Scholar
• Cao , T. , Manolii , V.P. , Hwang , S.F. , Howard , R.J. and Strelkov , S.E. 2009 . Virulence and spread of Plasmodiophora brassicae [clubroot] in Alberta, Canada . Can. J. Plant Pathol. , 31 : 321 – 329 .
   Web of Science ®Google Scholar
• Cheah , L.H. , Veerakone , S. and Kent , G. 2000 . Biological control of clubroot on cauliflower with Trichoderma and Streptomyces spp . N. Z. Plant Prot. , 53 : 18 – 21 .
   Google Scholar
• Colhoun , J. 1953 . A study of the epidemiology of clubroot disease of Brassicae . Ann. Appl. Biol. , 40 : 262 – 283 .
   Web of Science ®Google Scholar
• Conners , I.L. , Shoemaker , R.A. and Greelman , D.W. 1956 . Thirty-sixth annual report of the Canadian plant disease survey . Can. Plant Dis. Surv. , 36 : 52 – 53 .
   Google Scholar
• Cornforth , I.S. 1971 . Calcium cyanamide in agriculture . Soils Fertilizers , 34 : 463 – 470 .
   Google Scholar
• Crute , I.R. 1986 . The relationship between Plasmodiophora brassicae and its hosts: the application of concepts relating to variation in inter-organismal associations . Adv. Plant Pathol. , 5 : 1 – 51 .
   Google Scholar
• Crute , I.R. , Gray , A.R. , Crisp , P. and Buczacki , S.T. 1980 . Variation in Plasmodiophora brassicae and resistance to clubroot disease in Brassicas and allied crops – a critical review . Plant Breed. Abstr. , 50 : 91 – 104 .
   Google Scholar
• Dekhuijzen , H.M. 1979 . Electron microscopic studies on the root hairs and cortex of a susceptible and a resistant variety of Brassica campestris infected with Plasmodiophora brassicae . Neth. J. Plant Pathol. , 85 : 1 – 17 .
   Web of Science ®Google Scholar
• Deora , A. , Gossen , B.D. , Walley , F. and McDonald , M.R. 2011 . Boron reduces development of clubroot in canola . Can. J. Plant Pathol. , 33 : 475 – 484 .
   Web of Science ®Google Scholar
• Deora , A. , Gossen , B.D. and McDonald , M.R. 2012 . Infection and development of Plasmodiophora brassicae in resistant and susceptible canola cultivars . Can. J. Plant Pathol. , 34 : 239 – 247 .
   Web of Science ®Google Scholar
• Deora , A. , Gossen , B.D. and McDonald , M.R. 2013a . Expression of resistance to Plasmodiophora brassicae in four resistant canola cultivars. Can. J. Plant Pathol , 35 [Abstr.] (In press).
   Google Scholar
• Deora , A. , Gossen , B.D. and McDonald , M.R. 2013b . Changes in canola root anatomy following infection by Plasmodiophora brassicae. Can. J. Plant Pathol , 35 [Abstr.] (In press).
   Google Scholar
• Diederichsen , E. , Frauen , M. , Linders , E. , Hatakeyama , K. and Hirai , M. 2009 . Status and perspectives of clubroot resistance breeding in crucifer crops . J. Plant Growth Regul. , 28 : 265 – 281 .
   Web of Science ®Google Scholar
• Dixon , G.R. 2006 . The biology of Plasmodiophora brassicae Wor. – a review of recent advances . Acta Hortic. , 706 : 271 – 282 .
   Google Scholar
• Dixon , G.R. 2009 . The occurrence and economic impact of Plasmodiophora brassicae and clubroot disease . J. Plant Growth Regul. , 28 : 194 – 202 .
   Web of Science ®Google Scholar
• Dixon , G.R. 2012a . Climate change – impact on crop growth and food production, and plant pathogens . Can. J. Plant Pathol. , 34 : 362 – 379 .
   Web of Science ®Google Scholar
• Dixon , G.R. 2012b . Calcium cyanamide – a synoptic review of an environmentally benign fertiliser which enhances soil health . Acta Hortic. , 938 : 212 – 217 .
   Google Scholar
• Dobson , R.L. , Robak , J. and Gabrielson , R.L. 1983 . Pathotypes of Plasmodiophora brassicae in Washington, Oregon, and California . Plant Dis. , 67 : 269 – 271 .
   Web of Science ®Google Scholar
• Dokken-Bouchard , F.L. , Anderson , K. , Bassendowski , K.A. , Bouchard , A. , Brown , B. Cranston , R. 2012 . Survey of canola diseases in Saskatchewan in 2011 . Can. Plant Dis. Surv. , 92 : 125 – 129 .
   Google Scholar
• Donald , C. and Porter , I. 2009 . Integrated control of clubroot . J. Plant Growth Regul. , 28 : 289 – 303 .
   Web of Science ®Google Scholar
• Donald , E.C. , Lawrence , J.M. and Porter , I.J. 2004 . Influence of particle size and application method on the efficacy of calcium cyanamide for control of clubroot of vegetable brassicas . Crop Prot. , 23 : 297 – 303 .
   Web of Science ®Google Scholar
• Donald , E.C. , Porter , L.J. , Faggian , R. and Lancaster , R.A. 2006 . An integrated approach to the control of clubroot in vegetable Brassica crops . Acta Hortic. , 706 : 283 – 300 .
   Google Scholar
• Donald , E.C. , Jaudzems , G. and Porter , I.J. 2008 . Pathology of cortical invasion by Plasmodiophora brassicae in clubroot resistant and susceptible Brassicae oleracea . Plant Pathol. , 57 : 201 – 209 .
   Web of Science ®Google Scholar
• Doyle , O.P.E. and Clancy , K.J. 1987 . Effects of eight fungicides on clubroot of brassicas, disease severity and plant yield . Ann. Appl. Biol. , 110 ( Suppl ) : 50 – 51 .
   Google Scholar
• Feng , J. , Xiao , Q. , Hwang , S.F. , Strelkov , S.E. and Gossen , B.D. 2012 . Infection of canola by secondary zoospores of Plasmodiophora brassicae produced on a nonhost . Eur. J. Plant Pathol. , 132 : 309 – 315 .
   Web of Science ®Google Scholar
• Finlayson , D.G. and Campbell , C.J. 1971 . Fungicides for preventing clubroot of cauliflower in loam and peat soils . Can. Plant Dis. Surv. , 51 : 122 – 126 .
   Google Scholar
• Friberg , H. , Lagerlöf , J. and Rämert , B. 2005 . Germination of Plasmodiophora brassicae resting spores stimulated by a non-host plant . Eur. J. Plant Pathol. , 113 : 275 – 281 .
   Web of Science ®Google Scholar
• Friberg , H. , Lagerlöf , J. and Rämert , B. 2006 . Usefulness of nonhost plants in managing . Plasmodiophora brassicae. Plant Pathol. , 55 : 690 – 695 .
   Web of Science ®Google Scholar
• Fuchs , H. and Sacristán , M.D. 1996 . Identification of a gene in Arabidopsis thaliana controlling resistance to clubroot (Plasmodiophora brassicae) and characterization of the resistance response . Mol. Plant Microbe Inter. , 9 : 91 – 97 .
   Web of Science ®Google Scholar
• Gludovacz , T.V. , Gossen , B.D. and McDonald , M.R. 2013 . Evidence for tolerance to Plasmodiophora brassicae in a cabbage cultivar . Can. J. Plant Pathol. , 35 [Abstr.] (in press)
   Web of Science ®Google Scholar
• Gossen , B.D. , Adhikari , K.K.C. and McDonald , M.R. 2012a . Effects of temperature on infection and subsequent development of clubroot under controlled conditions . Plant Pathol. , 61 : 593 – 599 .
   Web of Science ®Google Scholar
• Gossen , B.D. , Adhikari , K.K.C. and McDonald , M.R. 2012b . Effect of seeding date on development of clubroot in vegetable Brassica crops . Can. J. Plant Pathol. , 34 : 516 – 523 .
   Web of Science ®Google Scholar
• Gossen , B.D. , Kasinathan , H. , Strelkov , S.E. , Manolii , V. , Hwang , S.F. , Peng , G. , Cao , T. and McDonald , M.R. (2013) . Risk potential of clubroot on the Canadian prairies, based on soil type and pH . Can. J. Plant Pathol. , 35 [Abstr.] (in press)
   Web of Science ®Google Scholar
• Hashiba , T. , Morita , S. , Narisawa , K. and Usuki , K. 2003 . Mechanisms of symbiosis and disease suppression of root endophytic fungus . Jpn. Soc. Biosci. Biotechnol. Agrochem. , 77 : 130 – 133 .
   Web of Science ®Google Scholar
• Health Canada (2009). Consultation document on quintozene: Proposed re-evaluation decision PRVD 2009-02. [Online] http://www.hc-sc.gc.ca/cps-spc/pest/part/consultations/_prvd2009-02/quintozene-eng.php#prvd [2 June 2011] (http://www.hc-sc.gc.ca/cps-spc/pest/part/consultations/_prvd2009-02/quintozene-eng.php#prvd [2 June 2011])
   Google Scholar
• Hildebrand , P.D. and McRae , K.B. 1998 . Control of clubroot caused by Plasmodiophora brassicae with nonionic surfactants . Can. J. Plant Pathol. , 20 : 1 – 11 .
   Web of Science ®Google Scholar
• Howard , R.J. , Strelkov , S.E. and Harding , M.W. 2010 . Clubroot of cruciferous crops – new perspectives on an old disease . Can. J. Plant Pathol. , 32 : 43 – 57 .
   Web of Science ®Google Scholar
• Hwang , S.F. , Strelkov , S.E. , Turnbull , G.D. , Manolii , V. , Howard , R.J. and Hartman , M. 2008 . Soil treatments and amendments for management of clubroot on canola in Alberta . Can. J. Plant Pathol. , 90 : 410 [Abstr.]
   Google Scholar
• Hwang , S.F. , Ahmed , H.U. , Strelkov , S.E. , Gossen , B.D. , Turnbull , G.D. , Peng , G. and Howard , R.J. 2011a . Seedling age and inoculum density affect clubroot severity and seed yield in canola . Can. J. Plant Sci. , 91 : 183 – 190 .
   Web of Science ®Google Scholar
• Hwang , S.F. , Ahmed , H.U. , Zhou , Q. , Strelkov , S.E. , Gossen , B.D. , Peng , G. and Turnbull , G.D. 2011b . Influence of cultivar resistance and inoculum density on root hair infection of canola (Brassica napus) by Plasmodiophora brassicae . Plant Pathol. , 60 : 820 – 829 .
   Web of Science ®Google Scholar
• Hwang , S.F. , Strelkov , S.E. , Gossen , B.D. , Turnbull , G.D. , Ahmed , H.U. , Manolii , V. and Howard , R.J. 2011c . Soil treatments and amendments for amelioration of clubroot of canola . Can. J. Plant Sci. , 91 : 999 – 1010 .
   Web of Science ®Google Scholar
• Hwang , S.F. , Ahmed , H.U. , Zhou , Q. , Rashid , S.E. , Strelkov , S.E. , Gossen , B.D. , Peng , G. and Turnbull , G.D. 2012a . Effect of susceptible and resistant canola plants on Plasmodiophora brassicae resting spore populations in the soil . Plant Pathol. , 61 : 945 – 952 .
   Web of Science ®Google Scholar
• Hwang , S.F. , Cao , T. , Xiao , Q. , Ahmed , H. , Manolii , V.P. , Turnbull , G. , Gossen , B.D. , Peng , G. and Strelkov , S.E. 2012b . Efficacy of fungicide, seeding date and seedling age on clubroot severity, seedling emergence and yield of canola . Can. J. Plant Sci. , 92 : 1175 – 1186 .
   Web of Science ®Google Scholar
• Ikegami , H. 1985 . Decrease of clubroot fungus by cultivation of different crops in heavily infested soil . Res. Bull. Fac. Agric., Gifu Univ. , 50 : 19 – 32 .
   Google Scholar
• Joo , G.J. , Kim , Y.M. , Kim , J.W. , Kim , W.C. , Rhee , I.K. , Choi , Y.H. and Kim , J.H. 2004 . Biocontrol of cabbage clubroot by the organic fertilizer using Streptomyces sp. AC-3 . Kor. J. Microbiol. Biotechnol. , 32 : 172 – 178 .
   Google Scholar
• Karling , J.S. 1968 . The Plasmodiophorales , 2nd , New York : Hafner Publishing Company .
   Google Scholar
• Kasinathan , H. 2012 . Influence of pH, temperature, and biofungicides on clubroot of canola , Guelph , ON : M.Sc. Thesis, University of Guelph .
   Google Scholar
• Kasinathan , H. , Gossen , B.D. and McDonald , M.R. 2011 . The influence of temperature and pH on clubroot (Plasmodiophora brassicae) symptom development in canola under controlled environment conditions . Can. J. Plant Pathol. , 33 : 260 [Abstr.]
   Google Scholar
• Kim , S. , Shin , C. , Moon , S. , Yi , Y. , Choi , G.J. , Cho , K.Y. , Song , J. and Lim , Y. 2004 . Isolation and characterization of Streptomyces sp. KACC 91027 against Plasmodiophora brassicae . J. Microbiol. Biotechnol. , 14 : 220 – 223 .
   Web of Science ®Google Scholar
• Kobelt , P. , Siemens , J. and Sacristán , M.D. 2000 . Histological characterisation of the incompatible interaction between Arabidopsis thaliana and the obligate biotrophic pathogen Plasmodiophora brassicae . Mycol. Res. , 104 : 220 – 225 .
   Google Scholar
• Kowata-Dresch , L.S. and May-De Mio , L.L. 2012 . Clubroot management of highly infested soils . Crop Prot. , 35 : 47 – 52 .
   Web of Science ®Google Scholar
• Kroll , T.K. , Lacy , G.H. and Moore , L.D. 1983 . A quantitative description of the colonization of susceptible and resistant radish plants by Plasmodiophora brassicae . J. Phytopathol. , 108 : 97 – 105 .
   Web of Science ®Google Scholar
• Lahlali , R. , Peng , G. , McGregor , L. , Gossen , B.D. , Hwang , S.F. and Mcdonald , M.R. 2011 . Mechanisms of the biofungicide Serenade® (Bacillus subtilis QST713) in suppressing clubroot . Biocontrol Sci. Technol. , 21 : 1351 – 1362 .
   Web of Science ®Google Scholar
• Lahlali, R., Peng, G., McRregor, L., YU, F.Q., Hynes, H.K., Hwang, S.F., McDonald, M.R., Gossen, B.D., & Boyetchko, S.M. (2012). Evidence that Bacillus subtilis suppresses clubroot on canola via antibiosis and induced host resistance. Phytopathology. doi http://apsjournals.apsnet.org/doi/abs/10.1094 /PHYTO-06-12-0123-R (in press) (http://apsjournals.apsnet.org/doi/abs/10.1094 /PHYTO-06-12-0123-R (in press))
   Google Scholar
• Lancaster, R. (2000). Managing clubroot in vegetable brassica crops. Farm Note, Note: 110. [Online] http://www.agric.wa.gov.au/objtwr/imported_assets/content/hort/veg/pw/fn2006_clubroot.pdf (http://www.agric.wa.gov.au/objtwr/imported_assets/content/hort/veg/pw/fn2006_clubroot.pdf)
   Google Scholar
• Leboldus , J.M. , Manolii , V.P. , Turkington , T.K. and Strelkov , S.E. 2012 . Adaptation to Brassica host genotypes by a single-spore isolate and population of Plasmodiophora brassicae [clubroot] . Plant Dis. , 96 : 833 – 838 .
   PubMed Web of Science ®Google Scholar
• Ludwig-MÜller , J. , Bennett , R.N. , Kiddle , G. , Ihmig , S. , Ruppel , M. and Hilgenberg , W. 1999 . The host range of Plasmodiophora brassicae and its relationship to endogenous glucosinolate content . New Phytol. , 141 : 443 – 458 .
   Web of Science ®Google Scholar
• Macfarlane , I. 1952 . Factors affecting the survival of Plasmodiophora brassicae Wor. in the soil and its assessment by a host test . Ann. Appl. Biol. , 39 : 239 – 256 .
   Web of Science ®Google Scholar
• McDonald , M.R. and Westerveld , S.M. 2008 . Temperature prior to harvest influences the incidence and severity of clubroot on two Asian Brassica vegetables . HortScience , 43 : 1509 – 1513 .
   Web of Science ®Google Scholar
• McDonald , M. R. , Kornatowska , B. and McKeown , A.W. 2004 . Management of clubroot of Asian Brassica crops grown on organic soils . Acta Hortic. , 635 : 25 – 30 .
   Google Scholar
• Mitani , S. , Sugimoto , K. , Hayashi , H. , Takii , Y. , Ohshima , T. and Matsuo , N. 2003 . Effects of cyazofamid against Plasmodiophora brassicae Woronin on Chinese cabbage . Pest Man. Sci. , 59 : 287 – 293 .
   PubMed Web of Science ®Google Scholar
• Monteith , J. 1924 . Relation of soil moisture and soil temperature to infection by Plasmodiophora brassicae . J. Agric. Res. , 28 : 549 – 562 .
   Google Scholar
• Morgner , M. 1995 . Mikroskopische Untersuchungen der Reaktionen empfindlicher und resistenter Genotypen verschiedener Brassica-Arten gegenüber Plasmodiophora brassicae (Wor.) , Ph.D. dissertation, Institut für Angewandte Genetik, Freie Universität Berlin .
   Google Scholar
• Morgner , M. and Sacristán , M.D. 1995 . Quantitative determination of colonization of Plasmodiophora brassicae (Wor.) in Brassica napus and Brassica oleracea . Cruciferae Newslet. , 17 : 80 – 81 .
   Google Scholar
• Murakami , H. , Tsushima , S. , Kuroyanagi , Y. and Shishido , Y. 2002 . Reduction in resting spore density of Plasmodiophora brassicae and clubroot severity by liming . Soil Sci. Plant Nutr. , 48 : 685 – 691 .
   Web of Science ®Google Scholar
• Myers , D.F. and Campbell , R.N. 1985 . Lime and the control of clubroot of crucifers: effects of pH, calcium, magnesium, and their interactions . Phytopathology , 75 : 670 – 673 .
   Web of Science ®Google Scholar
• Narisawa , K. , Tokumasu , S. and Hashiba , T. 1998 . Suppression of clubroot formation in Chinese cabbage by the root endophytic fungus, Heteroconium chaetospira . Plant Pathol. , 47 : 206 – 210 .
   Web of Science ®Google Scholar
• Niwa , R. , Nomura , Y. , Osaki , M. and Ezawa , T. 2008 . Suppression of clubroot disease under neutral pH caused by inhibition of spore germination of Plasmodiophora brassicae in the rhizosphere . Plant Pathol. , 57 : 445 – 452 .
   Web of Science ®Google Scholar
• O'Brien , D.G. and Dennis , R.W.G. 1936 . Further information relating to control of raan in swedes . Scot. J. Agric. , 19 : 1 – 18 .
   Google Scholar
• Oxley , S. 2007 . “ Clubroot disease of oilseed rape and other brassica crops ” . In Technical Note , Edinburgh , , UK : TN 620. Scottish Agriculture College . ISSN 01427695
   Google Scholar
• Pageau , D. , Lajeunesse , J. and Lafond , J. 2006 . Impact de l'hernie des crucifères [Plasmodiophora brassicae] sur la productivité et la qualité du canola . Can. J. Plant Pathol. , 28 : 137 – 143 .
   Web of Science ®Google Scholar
• Peng , G. , Lahlali , R. , Hwang , S.F. , Hynes , R.K. , McDonald , M.R. , Pageau , D. , Gossen , B.D. , Strelkov , S.E. and McGregor , L. 2011a . Control of clubroot on canola using the biofungicide Serenade plus cultivar resistance . Proceedings of 13^th International Rapeseed Congress , June 5–9, 2011, Prague, Czech Republic (pp. 1134–1137)
   Google Scholar
• Peng , G. , McGregor , L. , Lahlali , R. , Gossen , B.D. , Hwang , S.F. , Adhikari , K.K. , Strelkov , S.E. and McDonald , M.R. 2011b . Potential biological control of clubroot on canola and crucifer vegetable crops . Plant Pathol. , 60 : 566 – 574 .
   Web of Science ®Google Scholar
• Peng , G. , Lahlali , R. , Pageau , D. , Hwang , S.F. , Hynes , R.K. Anderson , K. 2013 . Assessment of crop rotation and host resistance in combination with Bacillus subtilis biofungicides for clubroot management on canola . Can. J. Plant Pathol. , [Abstr.] (in press)
   Web of Science ®Google Scholar
• Piao , Z. , Ramchiary , N. and Lim , Y.P. 2009 . Genetics of clubroot resistance in Brassica species . J. Plant Growth Regul. , 28 : 252 – 264 .
   Web of Science ®Google Scholar
• Rennie , D.C. , Manoli , V.P. , Cao , T. , Hwang , S.F. , Howard , R.J. and Strelkov , S.E. 2011 . Direct evidence of surface infestation of seeds and tubers by Plasmodiophora brassicae and quantification of spore loads . Plant Pathol. , 60 : 811 – 819 .
   Web of Science ®Google Scholar
• Rieder , G. 1981 . Calcium cyanamide – fertiliser or pesticide? . World Crops , 33 : 17 – 20 .
   Google Scholar
• Reyes , A.A. , Davidson , T.R. and Marks , C.F. 1974 . Races, pathogenicity and chemical control of Plasmodiophora brassicae in Ontario . Phytopathology , 64 : 173 – 177 .
   Web of Science ®Google Scholar
• Rod , J. 1992 . The effect of seed treatment on clubroot (Plasmodiophora brassicae Wor.) incidence . Ochr. Rostl. , 28 : 1 – 7 .
   Google Scholar
• Rowe , R.C. 1983 . Evaluation of radish cultivars for resistance to clubroot (Plasmodiophora brassicae) race 6 from the midwestern United States . Plant Dis , 64 : 462 – 464 .
   Google Scholar
• Saude , C. , McKeown , A. , Gossen , B.D. and McDonald , M.R. 2012 . Effect of host resistance and fungicide application on clubroot pathotype 6 in green cabbage and napa cabbage . HortTechnology , 22 : 311 – 319 .
   Web of Science ®Google Scholar
• Sharma , K. , Gossen , B.D. and McDonald , M.R. 2011a . Effect of temperature on primary infection by Plasmodiophora brassicae and initiation of clubroot symptoms . Plant Pathol. , 60 : 830 – 838 .
   Web of Science ®Google Scholar
• Sharma , K. , Gossen , B.D. and McDonald , M.R. 2011b . Effect of temperature on cortical infection by Plasmodiophora brassicae and clubroot severity . Phytopathology , 101 : 1424 – 1432 .
   PubMed Web of Science ®Google Scholar
• Sharma , K. , Gossen , B.D. , Greenshields , D. , Selvaraj , G. , Strelkov , S.E. and McDonald , M.R. 2013 . Reaction of lines of the Rapid Cycling Brassica Collection and Arabidopsis thaliana to selected pathotypes of Plasmodiophora brassicae . Plant Dis , (In press) doi: dx.doi.org/10.1094/PDIS-08-12-0752-RE
   Google Scholar
• Statistics Canada. (2010). Field crop reporting series. [Online] http://www40.statcan.ca/l01/cst01/PRIM11A-eng.htm. Catalogue number: 22-003-X (http://www40.statcan.ca/l01/cst01/PRIM11A-eng.htm. Catalogue number: 22-003-X)
   Google Scholar
• Statistics Canada (2012). Fruit and vegetable production. [Online] http://www.statcan.gc.ca/pub/22-003-x/22-003-x2011002-eng.pdf. Catalogue number: 22-003-X (http://www.statcan.gc.ca/pub/22-003-x/22-003-x2011002-eng.pdf. Catalogue number: 22-003-X)
   Google Scholar
• Strelkov , S.E. , Tewari , J.P. and Smith-Degenhardt , E. 2006 . Characterization of Plasmodiophora brassicae populations from Alberta, Canada . Can. J. Plant Pathol. , 28 : 467 – 474 .
   Web of Science ®Google Scholar
• Strelkov , S.E. , Manolii , V.P. , Cao , T. , Xue , S. and Hwang , S.F. 2007 . Pathotype classification of Plasmodiophora brassicae and its occurrence in Brassica napus in Alberta, Canada . J. Phytopath. , 155 : 706 – 712 .
   Web of Science ®Google Scholar
• Strelkov , S.E. , Hwang , S.F. , Howard , R.J. , Hartman , M. and Turkington , T.K. 2011a . Progress towards the sustainable management of clubroot [Plasmodiophora brassicae] of canola on the Canadian prairies . Prairie Soils Crops J. , 4 : 114 – 121 .
   Google Scholar
• Strelkov , S.E. , Hwang , S.F. , Howard , R.J. and Peng , G. 2011b . Clubroot in the Canadian canola (Brassica napus) crop: challenges and successes in dealing with an emerging disease . Proceedings of 13^th International Rapeseed Congress , June 05–09, 2011 : 1126 – 1127 . Prague, Czech Republic
   Google Scholar
• Strelkov , S.E. , Manolii , V.P. , Liu , J. , Jurke , C. , Rennie , D.C. , Orchard , D. , Hwang , S.F. and Laflamme , P. 2012 . The occurrence of clubroot on canola in Alberta in 2011 . Can. Plant Dis. Surv. , 92 : 122 – 124 .
   Google Scholar
• Suzuki , K. , Sugimoto , K. , Hayashi , H. and Komyoji , T. 1995 . Biological mode of action of fluazinam, a new fungicide, for Chinese cabbage clubroot . Ann. Phytopathol. Soc. Jpn. , 61 : 395 – 398 .
   Google Scholar
• Takahashi , K. 1994 . Biological agents affecting the viability of resting spores of Plasmodiophora brassicae Wor. in soil without host roots . Ann. Phytopathol. Soc. Jpn. , 60 : 667 – 674 .
   Google Scholar
• Tanaka , S. , Mido , H. and Ito , S. 2006 . Colonization by two isolates of Plasmodiophora brassicae with differing pathogenicity on a clubroot-resistant cultivar of Chinese cabbage (Brassica rapa L. subsp. pekinensis) . J. Gen. Plant Pathol. , 72 : 205 – 209 .
   Google Scholar
• Tewari , J.P. , Strelkov , S.E. , Orchard , D. , Hartman , M. , Lange , R.M. and Turkington , T.K. 2005 . Identification of clubroot of crucifers on canola (Brassica napus) in Alberta . Plant Dis. , 67 : 758 – 762 .
   Google Scholar
• Thuma , B.A. , Rowe , R.C. and Madden , L.V. 1983 . Relationships of soil temperature and moisture to clubroot (Plasmodiophora brassicae) severity on radish in organic soil . Plant Dis. , 67 : 758 – 762 .
   Web of Science ®Google Scholar
• Tremblay , N. , BéLec , C. , Coulombe , J. and Godin , C. 2005 . Evaluation of calcium cyanamide and liming for control of clubroot disease in cauliflower . Crop Prot. , 24 : 798 – 803 .
   Web of Science ®Google Scholar
• Toxopeus , H. , Dixon , G.R. and Mattusch , P. 1986 . Physiological specialization in Plasmodiophora brassicae: an analysis by international experimentation . Trans. Br. Mycol. Soc. , 87 : 279 – 287 .
   Web of Science ®Google Scholar
• Usuki , F. and Narisawa , K. 2007 . A mutualistic symbiosis between a dark septate endophytic fungus, Heteroconium chaetospira, and a non-mycorrhizal plant, Chinese cabbage . Mycologia , 99 : 175 – 184 .
   PubMed Web of Science ®Google Scholar
• Wallenhammar , A.C. 1996 . Prevalence of Plasmodiophora brassicae in spring oilseed rape growing areas in central Sweden and factors influencing soil infestation levels . Plant Pathol. , 45 : 710 – 719 .
   Web of Science ®Google Scholar
• Warne , L.G.G. 1943 . A case of club-root of swedes due to a seed-borne infection . Nature , 152 : 509
   Google Scholar
• Webb , P.C.R. 1949 . Zoosporangia, believed to be those of Plasmodiophora brassicae, in the root hairs of non-cruciferous plants . Nature , 163 : 168 [Abstr.]
   Web of Science ®Google Scholar
• Webster , M.A. and Dixon , G.R. 1991a . Calcium, pH and inoculum concentration influencing colonization by Plasmodiophora brassicae . Mycol. Res. , 95 : 64 – 73 .
   Web of Science ®Google Scholar
• Webster , M.A. and Dixon , G.R. 1991b . Boron, pH and inoculum concentration influencing colonization by Plasmodiophora brassicae . Mycol. Res. , 95 : 74 – 79 .
   Web of Science ®Google Scholar
• White , J.G. and Buczacki , S.T. 1977 . The control of clubroot by soil partial sterilization: a review . Ann. Appl. Biol. , 85 : 287 – 300 .
   Web of Science ®Google Scholar
• Williams , P.H. 1966 . A system for the determination of races of Plasmodiophora brassicae that infect cabbage and rutabaga . Phytopathology , 56 : 624 – 626 .
   Web of Science ®Google Scholar
• Williams , P.H. and Hill , C.B. 1986 . Rapid-cycling populations of Brassica . Science, New Series , 232 : 1385 – 1389 .
   PubMed Web of Science ®Google Scholar
• Williamson , C.J. and Patricia , E.D. 1989 . The effect of calcium cyanamide on the reaction of swede cultivars to populations of Plasmodiophora brassicae . Plant Pathol. , 38 : 230 – 238 .
   Web of Science ®Google Scholar
• Woronin , M.S. 1878 . Plasmodiophora brassicae, the cause of cabbage hernia. Translated by C. Chupp (1934). Phytopathological Classic No. 4 , St. Paul , MN : American Phytopathological Society .
   Google Scholar
• Yu , X.-K. , Wu , Y.-X. , Mao , Z.-C. and He , Y.-Q. 2012 . “ Water-mediated dissemination and chemical control of cabbage clubroot disease ” . In J. Huazhong Agric. Univ. (in press)
   Google Scholar