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2012

1. Bull, C. T., De Boer, S. H., Denny, T. P., Firrao, G., Fischer-Le Saux, M., Saddler, G. S., Scortichini, M., Stead, D. E. and Takikawa, Y. 2012 List of New Names of Plant Pathogenic Bacteria (2008-2010). Journal of Plant Pathology 94: 21-27

2. De Boer, S.H., Li, X. and Ward, L.J. 2012 Pectobacterium spp. associated with bacterial stem rot syndrome of potato in Canada. Phytopathology 937-947

3. Nabhan, S., De Boer, S.H., Maiss, E. and Wydra, K. 2012 Taxonomic relatedness between Pectobacterium carotovorum subsp. carotovorum, Pectobacterium carotovorum subsp. odoriferum and Pectobacterium carotovorum subsp. brasiliense subsp. nov. Journal of Applied MIcrobiology 113: 904-913

   2011

4. Madani, M., Ward, L.J. and De Boer, S.H. 2011 Hsp90 gene, an additional target for discrimination between potato cyst nematodes, Globodera rostochiensis, G. pallida and the related species, G. tabacum tabacum. European Journal of Plant Pathology 130: 271-285

5. De Boer, S.H. and Boucher, A. 2011 Prospect for functional eradication of the bacterial ring rot disease of potato. Canadian Journal of Plant Pathology 33: 297-307

6. Li, X., Nie, J., Ward, L.J., Nikerson, J., and De Boer, S.H. 2011 Development and evaluation of a loop-mediated isothermal amplification assay for rapid detection and identification of Pectobacterium atrosepticum. Canadian Journal of Plant Pathology 33: 447-457

   2010

7. Madani, M, Subbotin, S.A., Ward, L.J., Li, X. and De Boer, S.H. 2010 Molecular characterization of Canadian populations of potato cyst nematodes, Globodera rostochiensis and G. pallida using ribosomal nuclear RNA and cytochrome b genes. Canadian Journal of Plant Pathology 32: 252-263

8. Gray, S., De Boer, S., Lorenzen, J., Karasev, A., Whitworth, J., Nolte, P., Singh, R., Boucher, A. and Xu. H. 2010 Potato virus Y: an evolving concern for potato crops in the United States and Canada. Plant Disiase 94: 1384-1397

9. Bull, C.T., De Boer, S.H., Denny, T.P., Firrao, G., Fischer-Le Saux, M. Saddler, G.S., Scortichini, M., Stead, D.E., and Takikawa, Y. 2010 Comprehensive list of names of plant pathogenic bacteria, 1980-2007. Journal of Plant Pathology 92: 551-592

   2009

10. Madani, M., Ward, L.J., and De Boer, S.H. 2009 Multiplex real-time PCR for identifying potato cyst nematodes, Globodera pallida and G. rostochiensis, and the tobacco cyst nematode, Globodera tabacum. Canadian Journal of Plant Pathology 30: 554-564

11. Secor, G.A., Riveria, V., Abad, J.A., Clover, G.R.G., Liefting, L.W., Li, X. and De Boer, S.H. 2009 Association of "Candidatus Liberibacter solanacearum" with zebra chip disease of potato established by graft and psyllid transmission, electron microscopy and PCR. Plant Disease 93: 574-583

12. Li, X., Nie, J., Ward, L., Madani, M., and De Boer, S. H. 2009 Comparative genomics-guided loop-mediated isothermal amplification for the characterization of Pseudomonas syringae pv. phaseolicola. Journal of Applied Microbiology 107: 717-726

13. Smith, D.S. and De Boer, S.H. 2009 Implementation of an artificial reaction control in a TaqMan method for PCR detection of Ralstonia solanacearum race 3 biovar 2. European Journal of Plant Pathology 124: 405-412

    2008

14. Smith, D.S., Maxwell, P.W. and De Boer, S.H. 2008 Evaluation of neomycin phosphotransferase II and Cry3A as targets for the serological detection of transgenic potato tubers. American Journal of Potato Research 85: 60-68

15. Smith, D., De Boer, S.H. and Gourley, J. 2008 An internal reaction control for routine detection of Clavibacter michiganensis subsp. sepedonicus using a real-time Taqman PCR-based assay. Plant Disease 92: 684-693

16. Li, X.Q., Haroon, M., Coleman, S.E., Sullivan, A., Singh, M., Ward, L., De Boer, S.H., Zhang, T., and Donnelly, D. 2008 Simplified procedure for verifying and identifying potato cultivars using multiplex PCR. Canadian Journal of Plant Science 88: 583-592

17. Ward, L.J., Gourley, J. and De Boer, S.H. 2008 Molecular detection of Clavibacter michiganensis subsp. insidiosus in alfalfa seed. Canadian Journal of Plant Pathology 92:492-497

18. Bull, C.T., De Boer, S.H., Denny, T.P., Firrao, G., Fischer-Le Saux, M., Saddler, G.S., Scortichini, M., Stead, D.E., and Takikawa, Y. 2008 Demystifying the nomenclature of bacterial plant pathogens. Journal of Plant Pathology 90: 403-417

    2005

19. Xu, H., Nie, J. and De Boer, S.H. 2005 Differentiation and molecular detection of Canadian necrotic strains of potato virus Y. Canadian Journal of Plant Pathology 27: 125-131

20. Smith, D.S., Maxell, P.W. and De Boer, S.H. 2005 Comparison of several methods for the extraction of DNA from potatoes and potato derived products. Journal of Agriculture and Food Chemistry 53: 9848-9859

21. van den Boogert, P.H.J.F., van Gent-Pelzer, M.P.E., Bonants, P., De Boer, S.H., Wander, J.G.N., Levesque, C.A., van Leeuwen, G.C.M., and Baayen, R.P. 2005 Development of PCR-based detection methods for the quarantine phytopathogen Synchytrium endobioticum, causal agent of potato wart diseases. European Journal of Plant Pathology 113: 47-57

22. De Boer, S.H., Charkowski, A.O., Zink, R.T., Martinez-Soriano, J.P., and Flores-Olivas, A. 2005 Procedure for detection and identification of Clavibacter michiganensis subsp. sepedonicus (Spiekermann and Kotthoff) Davis, Gillespie, Vidaver and Harris in potato (Solanum tuberosum L) tubers. Revista Mexicana de Fitopatologia 23: 329-334

    2004

23. Duarte, V., De Boer, S.H., Ward, L.J. and de Oliveria, A.M.R. 2004 Characterization of atypical Erwinia carotovora strains causing blackleg of potato in Brazil. Journal of Applied Microbiology 96: 535-545

24. Smith, D.S., Maxwell, P.W. and De Boer, S.H. 2004 Method for the detection of synthetic cry3A in transgenic potatoes. Journal of Agriculture and Food Chemistry 52: 809-815

25. Xu, H., DeHaan, T.L. and De Boer, S.H. 2004 Detection and confirmation of potato mop-top virus in potatoes produced in the United States and Canada. Plant Disease 88: 363-367

    2003

26. Fessehaie, A., De Boer, S.H., and Levesque, C.A. 2003 An oligonucleotide array for identification and differentiation of bacteria pathogenic on potato. Phytopathology 93: 262-269

27. De Boer, S.H. 2003 Perspective on genetic engineering of agricultural crops for disease resistance. Canadian Journal of Plant Pathology 25: 10-20

28. De Boer, S.H. 2003 Minireview: Characterization of pectolytic erwinia as highly sophisticated pathogens of potato. European Journal of Plant Pathology 109: 893-899

29. Nagarajan, M.M. and De Boer, S.H. 2003 An oligonucleotide array to detect genetically modified events in potato. Plant Molecular Biology Reporter 21: 259-270

    2002

30. De Boer, S.H. 2002 Relative incidence of Erwinia carotovora subsp. atroseptica in stolon end and peridermal tissue of potato tubers in Canada. Plant Disease 86: 960-964

31. De Boer, S.H., Xu, H. and DeHaan, T. L. 2002 Potato spindle tuber viroid not found in western Canadian provinces. Canadian Journal of Plant Pathology 24: 372-375

    2001

32. Young, J.M., Bull, C.T., De Boer, S.H., Firrao, V., Gardan, L., Saddler, G. E., Stead, D. E. and Takikawa, Y. 2001 Classification, nomenclature, and plant pathogenic bacteria - A clarification. Phytopathology 91:617-620

33. Fessehaie, A., De Boer, S. H., Quail, A. and Levesque, C. A. 2001 Molecular characterization of DNA encoding 16S-23S rRNA intergenic spacer regions and 16S rRNA of pectolytic ErwinIa spp. Canadian Journal of Microbiology 48: 387-398

    2000

34. Singh, U., Trevors, C. M., De Boer, S. H. and Janse, J. 2000 A fimbrial-specific monoclonal antibody-based ELISA test for European potato strains of Erwinia chrysanthemi and comparison to PCR. Plant Disease 84:443-448

35. De Boer, S.H. and Hall, J. W. 2000 Proficiency testing in a laboraory accreditation program for the bacterial ring rot pathogen of potato. Plant Disease 84:649-653

36. De Boer, S.H. and Hall, J. W. 2000 Reproducibility of ELISA and immunofluorescence for detecting the bacterial ring rot pathogen in multiple laboratories. EPPO Bull 30: 397-401

    1997

37. Li, X., De Boer, S. H. and Ward, L. J. 1997 Improved microscopic identification of Clavibacter michiganensis subsp. sepedonicus cells by combining in situ hybridization with immunofluorescence. Letters in Applied Microbiology 24: 431-434

38. Fraaije, B.A., Appels, M., De Boer, S. H., Van Vuurde, J.W.L. and Van den Bulk, R.W. 1997 Detection of soft rot Erwinia spp. on seed potatoes: conductimetry in comparison with dilution plating, PCR and serological assays. European Journal of Plant Pathology 103: 183-193

39. Metzler, M.C., Laine, M. J. and De Boer, S. H. 1997 The status of molecular biological research on the plant pathogenic genus Clavibacter. FEMS Microbiology Letters 150: 1-8

40. Chittaranjan, S. and De Boer, S. H. 1997 Detection of Xanthomonas campestris pv. pelargonii in geranium and greenhouse nutrient solution by serological and PCR techniques. European Journal of Plant Pathology 103: 555-563

41. Nissen, R., Lai, F.-M., Laine, M.J., Bauer, P.J., Rielley, A.A., Li, X., De Boer, S. H., Ishimaru, C. A. and Metzler, M. C. 1997 Clavibacter michiganensis subsp. sepedonicus elicits a hypersensitive response in tobacco and secrets HR-inducing proteins. Phytopathology 87: 678-684

    1996

42. Young, J.M., Saddler, G.S., Takikawa, Y., De Boer, S.H., Vauterin, L., Gardan, L., Gvozdyak, R.I., Stead, D.E. 1996 Names of plant pathogenic bacteria 1864-1995. Review of Plant Pathology 75: 721-763

43. De Boer, S.H., Boucher, A., and De Haan, T.L. 1996 Validation of thresholds for serological tests that detect Clavibacter michiganensis subsp. sepedonicus in potato tuber tissue. EPPO Bull 26: 391-398

44. De Boer, S.H. and Hall, J.W. 1996 The probability of detecting Clavibacter michiganensis subsp. sepedonicus by indexing seed potato lots with serological tests. Journal of Phytopathology 144: 459-463

    1995

45. Dinesen, I.G. and De Boer, S.H. 1995 Extraction of Clavibacter michiganensis subsp. sepedonicus from composite samples of potato tubers. American Journal of Potato Research 72: 133-142

46. Gamard, P. and De Boer, S.H. 1995 Evaluation of antagonistic bacteria for suppression of bacterial ring rot of potato. Journal of Plant Pathology 101: 519-525

47. De Boer, S.H. and Ward, L.J. 1995 PCR detection of Erwinia carotovora subsp. atroseptica associated with potato tissue. Phytopathology 85: 854-858

48. Li, X. and De Boer, S.H. 1995 Selection of Polymerase Chain Reaction primers from an RNA intergenic spacer region for specific detection of Clavibacter michiganensis subsp. sepedonicus. Phytopathology 85:837-842

49. Li, X. and De Boer, S.H. 1995 Comparison of 16S ribosomal RNA in Clavibacter michiganensis subspecies with other coryneform bacteria. Canadian Journal of Microbiology 41: 925-929

50. De Boer, S.H., Ward, L.J., Li, X., and Chittaranjan, S. 1995 Attenuation of PCR inhibition in the presence of plant compounds by addition of BLOTTO. Nucleic Acids Research 23: 2567-2568

    1994

51. Ward, L.J. and De Boer, S.H. 1994 Specific detection of Erwinia carotovora subsp. atroseptica with a digoxigenin-labelled DNA probe. Phytopathology: 84: 180-186

52. De Boer, S.H. 1994 The role of plant pathology research in the Canadian potato industry. Canadian Journal of Plant Pathology 16: 150-155

53. De Boer, S.H., Stead, D.E., Alivizatos, A.S., Janse, J.D., Van Vaerenbergh, J., De Haan, T.L., and Mawhinney, J. 1994 Evaluation of serological tests for detection of Clavibacter michiganensis subsp. sepedonicus in composite potato stem and tuber samples. Plant Disease 78: 725-729

54. Levesque, C.A., Vrain, T.C. and De Boer, S.H. 1994 Development of species-specific probe for Pythium ultimum using amplified ribosomal DNA. Phytopathology 84: 474-478

    1992

55. De Boer, S.H., Janse, J.D., Stead, D.E., Van Vaerenbergh, J. and McKenzie, A.R. 1992. Detection of Clavibacter michiganensis subsp. sepedonicus in potato stems and tubers grown from seed pieces with various levels of inoculum. Potato Research 35: 207-216

56. De Boer, S.H., Van Vaerenbergh, J., Stead, D.E., Janse, J.D. and McKenzie, A.R. 1992 A comparative study among five laboratories on detection of Clavibacter michiganensis subsp. sepedonicus in potato stems and tubers. Potato Research 35: 217-226

    1991

57. De Boer, S.H. 1991 Current status and future prospects of bacterial ring rot testing. American Journal of Potato Research 68: 107-113

    1990

58. De Boer, S.H. and McCann, M. 1990 Detection of Corynebacterium sepedonicum in potato cultivars with different propensities to express ring rot symptoms. American Journal of Potato Research 67: 685-694

59. Ward, L.J. and De Boer, S.H. 1990 A DNA probe specific for serologically diverse strains of Erwinia carotovora. Phytopathology 80: 665-669

    1989

60. Ward, L.J. and De Boer, S.H. 1989 Characterization of a monoclonal antibody against active pectate lyase from Erwinia carotovora. Canadian Journal of Microbiology 35: 651-655

61. De Boer, S.H., De Haan, T.-L., and Mawhinney, J. 1989 Predictive value of laboratory tests for bacterial ring rot of potato. Canadian Journal of Plant Pathology 11: 317-321

62. De Boer, S.H. and McCann, M. 1989 Determination of population densities of Corynebacterium sepedonicum in potato stems during the growing season. Phytopathology 79: 946-951

    1988

63. De Boer, S.H. and Hall, J.W. 1988 An automated microscope system for estimating the population of Corynebacterium sepedonicum cells labelled with monoclonal antibodies in immunofluorescence. Canadian Journal of Plant Pathology 10: 215-220

64. De Boer, S.H., Wieczorek, A. and Kummer, A. 1988 An ELISA test for bacterial ring rot of potato with a new monoclonal antibody. Plant Disease 72: 874-878

    1987

65. De Boer, S.H. and McNaughton, M. E. 1987 Monoclonal antibodies to the lipopolysaccharide of Erwinia carotovora subsp. atroseptica serogroup I. Phytopathology 77: 828-832

66. Ward, L. and De Boer, S.H. 1987 A rapid procedure for purifying pectate lyase from Erwinia carotovora based on substrate affinity. Applied Environmental Microbiology 53: 1189-1191

67. De Boer, S.H. 1987 Use of monoclonal antibodies to identify and detect plant pathogenic bacteria. Canadian Journal of Plant Pathology 9: 182-187

68. De Boer, S.H., Verdonck, L., Vruggink, H., Harju, P., Bang, H.O., and De Ley, J. 1987 Serological variation among potato blackleg causing Erwinia carotovora subsp. atroseptica strains. Journal of Applied Bacteriology 63: 487-495

69. De Boer, S.H. 1987 The relationship between bacterial ring rot and North American seed potato export markets. American Journal of Potato Research 64: 683-694

    1986

70. Maher, E.A., De Boer, S.H., and Kelman, A. 1986 Serogroups of Erwinia carotovora involved in systemic infection of potato plants and infestation of progeny tubers. American Journal of Potato Research 63: 1-11

71. De Boer, S.H. and Sasser, M. 1986 Differentiation of Erwinia carotovora subsp. carotovora and E. carotovora subsp. atroseptica on the basis of cellular fatty acid composition. Canadian Journal of Microbiology 32: 796-800

72. De Boer, S.H. and McNaughton, M.E. 1986 Evaluation of immunofluorescence with monoclonal antibodies for detecting latent bacterial ring rot infections. American Journal of Potato Research 63: 533-543

    1985

73. De Boer, S.H. Bradshaw-Rouse, J.J., Sequeira, L., and NcNaughton, M.E. 1985 Sugar composition and serological specificity of Erwinia carotovora lipopolysaccharides. Canadian Journal of Microbiology 31: 583-586

    1984

74. De Boer, S.H. and Slack, S.A. 1984 Current status and prospects of detecting and controlling bacterial ring rot of potatoes in North America. Plant Disease 68: 841-844

75. De Boer, S.H. 1984 Enumeration of two competing Erwinia carotovora populations in potato tubers by membrane filter-immunofluorescence procedure. Journal of Applied Microbiology 57: 517-522

76. De Boer, S.H. and Wieczorek, A. 1984 Production of monoclonal antibodies to Corynebacterium sepedonicum. Phytopathology 74: 1431-1434

    1983

77. De Boer, S.H. 1983 Evaluation of an agar immunodiffusion procedure for confirming bacterial ring rot diagnoses. American Journal of Potato Research 60: 661-669

78. De Boer, S.H. 1983 Frequency and distribution of Erwinia carotovora serogroups associated with potato in the Pemberton Valley of British Columbia. Canadian Journal of Plant Pathology 25: 279-284

    1982

79. Crowley, C.F. and De Boer, S. H. 1982 Non-pathogenic bacteria associated with potato stems cross-react with Corynebacterium sepedonicum antisera in immunofluorescence. American Journal of Potato Research 59: 1-8

80. De Boer, S.H. 1982 Cross-reaction of Corynebacterium sepedonicum antisera with C. insidiosum, C. michiganense, and an unidentified coryneform bacterium. Phytopathology 72: 1474-1478

    1980

81. De Boer, S.H. 1980 Serological relationships among flagella of Erwinia carotovora var. atroseptica and some E. carotovora var. carotovora serogroups. Canadian Journal of Microbiology 26: 567-571

82. Crowley, C.F. and De Boer, S.H. 1980 Sensitivity of some Erwinia carotovora serogroups to macromolecular bacteriocins. Canadian Journal of Microbiology 26: 1023-1028

83. De Boer, S.H. and Copeman, R.J. 1980 Bacterial ring rot testing with the indirect fluorescent antibody staining procedure. American Journal of Potato Research 57: 457-465

84. De Boer, S.H. 1980 Leaf spot of cherry laurel caused by Pseudomonas syringae. Canadian Journal of Plant Pathology 2: 235-238

    1979

85. De Boer, S.H. Allen, E. and Kelman, A. 1979 Survival of Erwinia carotovora in Wisconsin soils. American Journal of Potato Research 56: 243-252

86. De Boer, S.H., Copeman, R.J. and Vruggink, H. 1979 Serogroups of Erwinia carotovora potato strains determined with diffusible somatic antigens. Phytopathology 69: 316-319

    1978

87. Vruggink, H. and De Boer, S.H. 1978 Detection of Erwinia carotovora var. atroseptica in potato tubers with immunofluorescence following induction of decay. Potato Research 21: 225-229

88. De Boer, S.H., Cuppels, D.A. and Kelman, A. 1978 Pectolytic Erwinia spp. in the root zone of potato plants in relation to infestation of daughter tubers. Phytopathology 68: 1784-1790

    1975

89. De Boer, S.H. and Kelman, A. 1975 Evaluation of procedures for detection of pectolytic Erwinia spp. on potato tubers. American Journal of Potato Research 52: 117-123

90. De Boer, S.H. and Kelman, A. 1975 Influence of oxygen concentration and storage factors on susceptibility of potato tubers to bacteria soft rot (Erwinia carotovora). Potato Research 21: 65-80

    1974

91. De Boer, S.H. and Copeman, R.J. 1974 Endophytic bacterial flora in Solanum tuberosum and its significance in bacterial ring rot diagnosis. Canadian Journal of Plant Science 54: 115-122