Annual Meeting, Ottawa, Ontario, 2004

Abstract

Suppression of damping-off of cucumber seedlings, caused by Pythium spp., with AG3 phosphonate formulations under growth room, microplot, and field conditions. P.A. Abbasi, K.L. Conn, and G. Lazarovits. Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, 1391 Sandford Street, London, ON N5V 4T3, Canada. Suppression of plant defenses by the tomato pathogen Pseudomonas syringae pv. tomato. R.B. Abramovitch and G.B. Martin. Boyce Thompson Institute for Plant Research and Department of Plant Pathology, Cornell University, Ithaca, NY 14853, USA. Suppression of eukaryotic programmed cell death by the Pseudomonas syringae pv. tomato type III effector AvrPtoB. R.B. Abramovitch and G.B. Martin. Boyce Thompson Institute for Plant Research and Department of Plant Pathology, Cornell University, Ithaca, NY 14853, USA. Response of a field population of Ascochyta rabiei to various dosages of chlorothalonil and mancozeb. H.U. Ahmed, K.F. Chang, S.F. Hwang, and R.J. Howard. Field Crop Development Centre, Alberta Agriculture, Food and Rural Development (AAFRD), 6000 C&E Trail, Lacombe, AB T4L 1W1, Canada; (S.F.H.) Alberta Research Council, Bag 4000, Vegreville, AB T9C 1T4, Canada; and (R.J.H.) Crop Diversification Centre South, AAFRD, Brooks, AB T1R 1E6, Canada. Forest biosecurity: Canada's response to alien invasive species. E.A. Allen and L.M. Humble. Pacific Forestry Centre, Canadian Forest Service, Natural Resources Canada, 506 West Burnside Road, Victoria, BC V8Z 1M5, Canada. Genotypes of Phytophthora infestans isolates from potato in New Brunswick and their response to fungicides. K. Al-Mughrabi and P. Audy. Potato Development Centre, New Brunswick Department of Agriculture, Fisheries and Aquaculture, 39 Barker Lane, Wicklow, NB E7L 3S4, Canada; and (P.A.) Potato Research Centre, Agriculture and Agri-Food Canada, 850 Lincoln Road, P.O. Box 20280, Fredericton, NB E3B 4Z7, Canada. A rapid assay to detect fungal species associated with soybean root rot in Eastern Canada. T. Barasubiye, K. Seifert, A. Tenuta, S. Rioux, T. Anderson, and C.A. Lévesque. Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-Food Canada (AAFC), 960 Carling Avenue, Ottawa, ON K1A 0C6, Canada; (A.T.) Ontario Ministry of Agriculture and Food, P.O. Box 400, Main Street, Ridgetown, ON NOP 2C0, Canada; (S.R.) Centre de recherche sur les grains, 2700 Einstein Street, Sainte-Foy, QC G1P 3W8, Canada; and (T.A.) Greenhouse and Processing Crops Research Centre, AAFC, 2585 County Road 20, Harrow, ON N0R 1G0, Canada. Biological control potential of bacterial strains against Sclerotinia sclerotiorum. M. Behrouzin, S.M. Boyetchko, and G. Séguin-Swartz. Saskatoon Research Centre, Agriculture and Agri-Food Canada, 107 Science Place, Saskatoon, SK S7N 0X2, Canada. Biological activity of resveratrol on Sclerotinia sclerotiorum, the cause of stem rot of canola. M. Behrouzin, G. Séguin-Swartz, and S.M. Boyetchko. Saskatoon Research Centre, Agriculture and Agri-Food Canada, 107 Science Place, Saskatoon, SK S7N 0X2, Canada. Controlling diseases without fungicides: a new chemical warfare. R.R. Bélanger. Département de phytologie, Centre de recherche en horticulture, Université Laval, Québec, QC G1K 7P4, Canada. Molecular characterization of two novel strains of Blueberry scorch virus from British Columbia. M.G. Bernardy, C.R. Dubeau, A. Braun, C.E. Harlton, A. Bunckle, L.A. Wegener, D.T. Lowery, and C.J. French. Pacific Agri-Food Research Centre, Agriculture and Agri-Food Canada, 4200 Highway 97, Summerland, BC V0H 1Z0, Canada; and (L.A.W.) Centre for Environmental Biology, Department of Biological Sciences, Simon Fraser University, Burnaby, BC V5A 1S6, Canada. Partial molecular characterization of a wide range of Canadian isolates of Plum pox virus. M.G. Bernardy and C.E. Harlton. Pacific Agri-Food Research Centre, Agriculture and Agri-Food Canada, 4200 Highway 97, Summerland, BC V0H 1Z0, Canada. Real-time polymerase chain reaction detection and single nucleotide polymorphisms genotyping of Phytophthora ramorum, the causal agent of sudden oak death. G.J. Bilodeau, C.A. Lévesque, A.W.A.M. de Cock, S. Brière, J. McDonald, G. Kristjansson, and R.C. Hamelin. Natural Resources Canada, P.O. Box 3800, 1055 du P.E.P.S. Street, Sainte-Foy, QC G1V 4C7, Canada; (C.A.L.) Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-food Canada, 960 Carling Avenue, Ottawa, ON K1A 0C6, Canada; (A.W.A.M.d.C.) Centraalbureau voor Schimmelcultures, P.O. Box 85167, NL-3508 AD Utrecht, Netherlands; and (S.B., J.M., G.K.) Canadian Food Inspection Agency, 3851 Fallowfield Road, Ottawa, ON K2H 8P9, Canada. Diversity of fungi present in lodgepole pine tree killed by the mountain pine beetle. C. Breuil and J.J. Kim. Forest Products Biotechnology, Department of Wood Science, Faculty of Forestry, University of British Columbia, 2424 Main Mall, Vancouver, BC V6T 1Z4, Canada. Diphenylamine has no effect on the control of blue mold [Penicillium expansum] of apple with fludioxonil. N. Brubacher and D. Errampalli. Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, 4902 Victoria Avenue North, Vineland Station, ON L0R 2E0, Canada. Integrated management of botrytis leaf blight of onion. O. Carisse, M. Tremblay, and D. Rolland. Horticultural Research and Development Centre, Agriculture and Agri-Food Canada, 430 Gouin Boulevard, Saint-Jean-sur-Richelieu, QC J3B 3E6, Canada. Evaluation of chickpea for resistance to ascochyta blight using detached-leaf and spray inoculation methods. K.F. Chang, H.U. Ahmed, S.F. Hwang, and R.J. Howard. Field Crop Development Centre, Alberta Agriculture, Food and Rural Development (AAFRD), Lacombe, AB T4L 1W1, Canada; (S.F.H.) Alberta Research Council, Bag 4000, Vegreville, AB T9C 1T4, Canada; and (R.J.H.) Crop Diversification Centre South, AAFRD, Brooks, AB T1R 1E6, Canada. Tolerance to a nonhost isolate of Verticillium dahliae in tomato. P. Chen, B. Lee, and J. Robb. Department of Molecular Biology and Genetics, University of Guelph, Guelph, ON N1G 2W1, Canada. Differentiating pathogenicity groups 2 and 3 of Leptosphaeria maculans, using sequence-related amplified polymorphic markers. Y. Chen, W.G.D. Fernando, and J.X. Zhang. Department of Plant Science, 222 Agriculture Building, University of Manitoba, Winnipeg, MB R3T 2N2, Canada. Tolerance to barley yellow dwarf closely related to root system efficiency. A. Comeau and R. Paquet. Soils and Crops Research Development Centre, Agriculture and Agri- Food Canada, 2560 Hochelaga Boulevard, Sainte-Foy, QC G1V 2J3, Canada. Impact of lime (CaCO3) soil amendment on populations of pathogenic Streptomyces scabies, and on the incidence of potato scab in the presence or absence of a potato crop. K.L. Conn and G. Lazarovits. Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, 1391 Sandford Street, London, ON N5V 4T3, Canada. Characterization of three subtilase genes from a sapstaining fungus reveals the importance of extracellular proteases for growth on wood. S. DiGuistini, B. Hoffman, and C. Breuil. Forest Products Biotechnology, Department of Wood Science, Faculty of Forestry, University of British Columbia, 2424 Main Mall, Vancouver, BC V6T 1Z4, Canada; and (B.H.) British Columbia Cancer Agency, 600 West 10th Avenue, Vancouver, BC V5Z 4E6, Canada. Potential of ammonium lignosulphonate as a medium to introduce bacteria and fungi into soil for the control of Cylindrocladium floridanum. M.T. Dumas, G. Halicki- Hayden, and J.A. McLaughlin. Great Lakes Forestry Centre, 1219 Queen Street East, Sault Sainte Marie, ON P6A 2E5, Canada; and (G.H.-H., J.A.M.) Ontario Forest Research Institute, 1235 Queen Street East, Sault Sainte Marie, ON P6A 2E5, Canada. cDNA array analysis of gene expression in the phytopathogen Sclerotinia sclerotiorum. P.M. Edler and K.F. Dobinson. Department of Biology, University of Western Ontario, 1151 Richmond Street, London, ON N6A 5B8, Canada; and (K.F.D.) Southern Crop Protection and Food Research Centre, Agriculture and Agri-food Canada, 1391 Sandford Street, London, ON N5V 4T3, Canada. Spatiotemporal tracking by polymerase chain reaction of late blight and associated diseases in stored potato tubers. A. El Hadrami, O. Wally, X. Wang, L. Adam, L. Lamari, and F. Daayf. Department of Plant Science, 222 Agriculture Building, University of Manitoba, Winnipeg, MB R3T 2N2, Canada. Susceptible coexistence: coevolution of native plant pathogens and their native hosts. J.F. Elmhirst. Elmhirst Diagnostics and Research, 5727 Riverside Street, Abbotsford, BC V4X 1T6, Canada. A competitive ethylene antagonist, 1-methylcyclopropene, has variable effect on postharvest blue mold [Penicillium expansum] and gray mold [Botrytis cinerea] of apples. D. Errampalli, J. DeEll, and D.P. Murr. Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, 4902 Victoria Avenue North, Vineland Station, ON L0R 2E0, Canada; (J.D.) Ontario Ministry of Agriculture and Food, Blue Line Road Highway 3, Simcoe, ON N3Y 4N5, Canada; and (D.P.M.) University of Guelph, Bovey Building, Guelph, ON N1G 2W1, Canada. Genetic transformation of Fusarium graminearum, the causal agent of fusarium head blight of wheat. J. Feng, G.R. Hughes, and Y.D. Wei. Department of Plant Sciences, 51 Campus Drive, University of Saskatchewan, Saskatoon, SK S7N 5A8, Canada; and (Y.D.W.) Department of Biology, 112 Science Place, University of Saskatchewan, Saskatoon, SK S7N 5E2, Canada. Finding the perfect potato: using functional genomics to improve resistance to disease and tuber quality traits. B. Flinn and S. Regan. University of New Brunswick, Canadian Potato Genome Project, Fredericton, NB E3B 5A6, Canada; and (S.R.) Carleton University, Canadian Potato Genome Project, Ottawa, ON K1S 5B6, Canada. Effect of leaf-spot diseases on preharvest sprouting in spring wheat. S. Fox and J. Gilbert. Cereal Research Centre, Agriculture and Agri-Food Canada, 195 Dafoe Road, Winnipeg, MB R3T 2M9, Canada. Expression of defense-related genes in the incompatible reaction between wheat and Tilletia tritici. D.A. Gaudet, Z.-X. Lu, B. Puchalski, M. Frick, B. Genswein, and A. Laroche. Lethbridge Research Centre, Agriculture and Agri- Food Canada, P.O. Box 3000, Lethbridge, AB T1J 4B1, Canada. Amplified fragment length polymorphisms verification of the emergence of a new pathotype of Bipolaris sorokiniana in Manitoba. H. Ghazvini, D.J. Somers, and A. Tekauz. Cereal Research Centre, Agriculture and Agri- Food Canada, 195 Dafoe Road, Winnipeg, MB R3T 2M9, Canada. Genetic diversity of Inonotus tomentosus in natural and managed forests in subboreal spruce forests of Central British Columbia. S. Gibson and K. Lewis. Ecosystem Science and Management, 3333 University Way, University of Northern British Columbia, Prince George, BC V2N 4Z9, Canada. First report of resistance to strobilurin fungicides in Didymella rabiei. B.D. Gossen and K.L. Anderson. Saskatoon Research Centre, Agriculture and Agri-Food Canada, 107 Science Place, Saskatoon, SK S7N 0X2, Canada. Isolation and characterization of phages infecting Streptomyces scabies and their potential as biocontrol agents. C. Goyer, L. Hatt, and H. Lebel-Talbot. Potato Research Centre, Agriculture and Agri-Food Canada, 850 Lincoln Road, Fredericton, NB E3B 4Z7, Canada. Evaluation of antagonistic microorganisms as biocontrol agents of root rot [Pythium ultimum] of greenhouse tomatoes in rock wool. V. Gravel, C. Martinez, H. Antoun, and R.J. Tweddell. Centre de Recherche en Horticulture, Université Laval, Québec, QC G1K 7P4, Canada; and (H.A.) Département des sols et génie agroalimentaire, Université Laval, Québec, QC G1K 7P4, Canada. A recent investigation of fusarium head blight disease and its effect on wheat grain quality and yield in Manitoba. X.W. Guo, W.G.D. Fernando, T. Nowicki, and C. Jarvis. Department of Plant Science, 222 Agriculture Building, University of Manitoba, MB R3T 2N2, Canada; (T.N.) Grain Research Laboratory, Canadian Grain Commission, 1404-303 Main Street, Winnipeg, MB R3C 3G8, Canada; and (C.J.) Department of Soil Science, University of Manitoba, Winnipeg, MB R3T 2N2, Canada. Congruency of three molecular data sets supports the association of Leptographium wingfieldii with the European pine shoot beetle, Tomicus piniperda, in Southern Ontario. G. Hausner, M. Iranpour, C.N. Davis, E.A. Gibb, J. Reid, P.C. Loewen, and A.A. Hopkin. Department of Microbiology, University of Manitoba, Winnipeg, MB R3T 2N2, Canada; and (C.N.D., A.A.H.) Great Lakes Forestry Centre, Canadian Forest Service, Natural Resources Canada, 1219 Queen Street, Sault Saint Marie, ON P6A 2E5, Canada. Prevalence of potato scab and its economic impact in Canada during 2002. J. Hill and G. Lazarovits. Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, 1391 Sandford Street, London, ON N5V 4T3, Canada. Effect of granular mycorrhizae seed treatments on the mycorrhizal colonization of onion roots and the development of onion white rot [Sclerotium cepivorum]. M.H.Y. Hovius, M.R. McDonald, and K. Vander Kooi. Muck Crops Research Station, Department of Plant Agriculture, University of Guelph, 1125 Woodchoppers Lane, Kettleby, ON L0G 1J0, Canada; and (M.R.M.) Department of Plant Agriculture, University of Guelph, Guelph, ON N1G 2W1, Canada. Assessing the residual effects of foliar-applied fungicides against three tuber diseases in stored potatoes. R.J. Howard, A.G.G. McFadden, S.L.I. Lisowski, D.L. Slomp, B.A. Thompson, and A.C. White. Crop Diversification Centre South, Alberta Agriculture, Food and Rural Development, Brooks, AB T1R 1E6, Canada; and (A.G.G.M.) Dow AgroSciences Canada Inc., 46 Park Avenue, Guelph, ON N1H 4S5, Canada. Finding uniquely fungal genes through comparative genomics. T. Hsiang. Department of Environmental Biology, University of Guelph, Guelph, ON N1G 2W1, Canada. Pathogenesis of Sclerotinia sclerotiorum in soybean transgenic lines expressing different levels of oxalate oxidase activity. S. Hubbard, A. Davidson, and D. Simmonds. Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-Food Canada, 960 Carling Avenue, Ottawa, ON K1A 0C6, Canada. Identification of hypersensitive response resistance in wild species of Pisum to powdery mildew [Erysiphe pisi]. S.F. Hwang, H. Su, K.F. Chang, R.L. Conner, and G.D. Turnbull. Alberta Research Council, Bag 4000, Vegreville, AB T9C 1T4, Canada; (K.F.C.) Field Crop Development Centre, Alberta Agriculture, Food and Rural Development, Lacombe, AB T4L 1W1, Canada; and (R.L.C.) Morden Research Station, Agriculture and Agri-Food Canada, Morden, MB R6M 1Y5, Canada. Trichothecene mycotoxins affect Fusarium seedling blight and root rot in spring wheat. S.F. Hwang, H. Wang, and F. Eudes. Alberta Research Council, Bag 4000, Vegreville, AB T9C 1T4, Canada; and (F.E.) Lethbridge Research Centre, Agriculture and Agri-Food Canada, P.O. Box 3000, Lethbridge, AB T1J 4B1, Canada. Comparison of three methods for assessing reaction to Mycosphaerella pinodes in lines of Pisum sativum. S.F. Hwang, R. Zhang, K.F Chang, B.D. Gossen, and G.D. Turnbull. Alberta Research Council, Bag 4000, Vegreville, AB T9C 1T4, Canada; (K.F.C.) Field Crop Development Centre, Alberta Agriculture, Food and Rural Development, Lacombe, AB T4L 1W1, Canada; and (B.D.G.) Saskatoon Research Centre, Agriculture and Agri-food Canada, 107 Science Place, Saskatoon, SK S7N 0X2, Canada. Effect of Trichoderma harzianum on the production of perithecia of Gibberella zeae on wheat residue. S. Inch and J. Gilbert. Cereal Research Centre, Agriculture and Agri-Food Canada, 195 Dafoe Road, Winnipeg, MB R3T 2M9, Canada. Cronartium ×flexili nothosp. nov., a white pine blister rust hybrid between Cronartium comandrae and Cronartium ribicola on limber pine in Alberta. D.L. Joly, D.W. Langor, J.D. Weber, and R.C. Hamelin. Natural Resources Canada, Canadian Forest Service, Laurentian Forestry Centre, 1055 du P.E.P.S. Street, Sainte-Foy, QC GIV 4C7, Canada, and (D.W.L., J.D.W.) Northern Forestry Centre, Canadian Forest Service, Natural Resources Canada, 5320, 122th Street, Edmonton, AB T6H 3S5, Canada. Beyond resistance genes: dissecting pathways of resistance to disease, using genomics and proteomics. M.C. Jordan, S. Cloutier, D. Somers, D. Procunier, C. Rampitsch, and T. Xing. Cereal Research Centre, Agriculture and Agri- Food Canada, 195 Dafoe Road, Winnipeg, MB R3T 2M9, Canada; and (T.X.) Department of Biology, Carleton University, 1125 Colonel By Drive, Ottawa, ON K1S 5B6, Canada. VDH1, a novel Verticillium dahliae hydrophobin gene, is needed for wild-type microsclerotial development. A. Klimes and K.F. Dobinson. Department of Biology, University of Western Ontario, London, ON N6A 5C1, Canada; and (K.F.D.) Southern Crop Protection and Food Research Centre, Agriculture and Agri-food Canada, 1391 Sandford Street, London, ON N5V 4T3, Canada. The forensic pathology of Canadian hard red spring wheats: a case study for tan spot. L. Lamari and B.D. McCallum. Department of Plant Science, University of Manitoba, 222 Agriculture Building, Winnipeg, MB R3T 2N2, Canada; and (B.D.M.) Cereal Research Centre, Agriculture and Agri-Food Canada, 195 Dafoe Road, Winnipeg, MB R3T 2M9, Canada. Changes in sensitivity of Sclerotinia homoeocarpa to the demethylation inhibitor fungicide propiconazole. A. Liao and T. Hsiang. Department of Environmental Biology, University of Guelph, Guelph, ON N1G 2W1, Canada. Transformed tomato root exudates are less attractive to zoospores of Phytophthora nicotianae after colonization by the arbuscular mycorrhizal fungus Glomus intraradices. L. Lioussanne, M. Jolicoeur, and M. St-Arnaud. Institut de recherche en biologie végétale, Jardin botanique de Montréal, Université de Montréal, 4101 East Sherbrooke Street, QC H1X 2B2, Canada; and (M.J.) Unité de recherche Bio-P2, Département de génie chimique, école polytechnique de Montréal, P.O. Box 6079, Centre-ville Branch, Montréal, QC H3C 3A7, Canada. Management strategies for barley seeds infected with Bipolaris sorokiniana. G.D. Martens and A. Tekauz. Cereal Research Centre, Agriculture and Agri-Food Canada, 195 Dafoe Road, Winnipeg, MB R3T 2M9, Canada. Evaluation of different fungicides for the control of carrot cavity spot. C. Martinez, C.A. Lévesque, R.R. Bélanger, and R.J. Tweddell. Centre de Recherche en Horticulture, Université Laval, Québec, QC G1K 7P4, Canada; and (C.A.L.) Eastern Cereal and Oilseed Centre, Agriculture and Agri-Food Canada, 960 Carling Avenue, Ottawa, ON K1A 0C6, Canada. Stripe-rust reaction of 28 Canadian wheat cultivars. B.D. McCallum, X. Chen, S. Shorter, R.S. Sadasivaiah, and J.P. Tewari. Cereal Research Centre, Agriculture and Agri- Food Canada (AAFC), 195 Dafoe Road, Winnipeg, MB R3T 2M9, Canada; (X.C.) Agricultural Research Service, United States Department of Agriculture, 361 Johnson Hall, Washington State University, P.O. Box 646430, Pullman, WA 99164-6430, USA; (S.S.) New Zealand Institute for Crop and Food Research Institute, Private Bag 4704, Christchurch, New Zealand; (R.S.S.) Lethbridge Research Centre, AAFC, P.O. Box 3000, Lethbridge, AB T1J 4B1, Canada; and (J.P.T.) Department of Agricultural, Food, and Nutritional Science, 410 H Agriculture/Forestry Centre, University of Alberta, Edmonton, AB T6G 2P5, Canada. Advances in conventional approaches to disease management. M.R. McDonald. Department of Plant Agriculture, Crop Science Building, University of Guelph, Guelph, ON N1G 2W1, Canada. Effect of canopy trimming, fungicide application on carrot growth, leaf blights, and development of apothecia of Sclerotinia sclerotiorum. M.R. McDonald, K. Vander Kooi, M.H.Y. Hovius, C. Kora, and G.J. Boland. Department of Plant Agriculture and (G.J.B.) Department of Environmental Biology, University of Guelph, Guelph, ON N1G 2W1, Canada. Synergistic effect of combined application of Pseudomonas chlororaphis strain PA-23 and Bacillus subtilis strain CBE4 against rhizome rot of turmeric (Curcuma longa). S. Nakkeeran, K. Kavitha, S. Mathiyazhagan, W.G.D. Fernando, G. Chandrasekar, and P. Renukadevi. Department of Plant Pathology, Tamil Nadu Agricultural University, Coimbatore 641003, India; and (W.G.D.F.) Department of Plant Science, 222 Agriculture Building, University of Manitoba, Winnipeg, MB R3T 2N2, Canada. Molecular uniformity and pathological diversity of the Potato virus YN:O group. X. Nie and R.P. Singh. Potato Research Centre, Agriculture and Agri-Food Canada, P.O. Box 20280, 850 Lincoln Road, Fredericton, NB E3B 4Z7, Canada. Aster yellows phytoplasmas in canola plants and seed. C.Y. Olivier, G. Murza, G. Séguin-Swartz, and O.O. Olfert. Saskatoon Research Centre, Agriculture and Agri-Food Canada, 107 Science Place, Saskatoon, SK S7N 0X2, Canada. Detecting loss and predicting risk: applications for remote sensing and geographic positioning systems in plant pathology. P.V. Oudemans. PE Marucci Centre for Blueberry and Cranberry Research, Rutgers University, 125a Lake Oswego Road, Chatsworth, NJ 08019, USA. Role of phenolic compounds in epidemics of root rot [Pythium aphanidermatum] of hydroponic pepper (Capsicum annuum). T.N. Owen-Going, C.W. Beninger, B. Christie, J.C. Sutton, and J.C. Hall. Department of Environmental Biology, University of Guelph, Guelph, ON N1G 2W1, Canada. Survival of lodgepole pine trees following stem infection by western gall rust. J.M. Pankuch and P.V. Blenis. Department of Renewable Resources, University of Alberta, 751 General Services Building, Edmonton, AB T6G 2H1, Canada. Speciation in two pine rusts. F. Paradis, D.L. Joly, J.A.Walla, and R.C. Hamelin. Laurentian Forestry Centre, Canadian Forest Service, Natural Resources Canada, 1055 du P.E.P.S. Street, P.O. Box 3800, Sainte-Foy, QC G1V 4C7, Canada; and (J.A.W.) Department of Plant Pathology, North Dakota State University, 306 Walster Hall, Fargo, ND 58105-5012, USA. Spatial distribution of Rhizoctonia solani and Rhizoctonia oryzae at three different scales in directseeded wheat. T.C. Paulitz and R.E. Rossi. Root Disease and Biological Control Research Unit, Agricultural Research Service, United States Department of Agriculture, Pullman, WA 99164-6430, USA; and (R.E.R.) Centre for Precision Agriculture Systems, Box 646420, Washington State University, Pullman, WA 99164-6420, USA. Potential enhancement of pathogen virulence, using lowrate herbicides with Pyricularia setariae. G. Peng and K.N. Byer. Saskatoon Research Centre, Agriculture and Agri-Food Canada, 107 Science Place, Saskatoon, SK S7N 0X2, Canada. Grain glutens as soil amendments for weed and disease control in organically grown potatoes. R.D. Peters, J.A. Ivany, W.J. Arsenault, and D. Aiken. Crops and Livestock Research Centre, Agriculture and Agri-Food Canada, 440 University Avenue, Charlottetown, PE C1A 4N6, Canada. First report of Pythium sylvaticum causing potato tuber rot. R.D. Peters, H.W. (Bud) Platt, and C.A. Lévesque. Crops and Livestock Research Centre, Agriculture and Agri-Food Canada (AAFC), 440 University Avenue, Charlottetown, PE C1A 4N6, Canada; and (C.A.L.) Eastern Cereal and Oilseed Research Centre, AAFC, Central Experimental Farm, K.W. Neatby Building, 960 Carling Avenue, Ottawa, ON K1A 0C6, Canada. Control of pink rot and leak of potatoes with in-furrow and foliar treatments of mefenoxam (Ridomil Gold®). H.W. (Bud) Platt, R.D. Peters, R. Coffin, Y. Leclerc, I. Macdonald, K. MacIsaac, and T. Kloepfer-Dawes. Crops and Livestock Research Centre, Agriculture and Agri-Food Canada, 440 University Avenue, Charlottetown, PE C1A 4N6, Canada; (R.C.) Cavendish Farms, Summerside, PE C1N 5J5, Canada; (Y.L.) McCain Foods Limited, Florenceville, NB E7L 1B2, Canada; and (T.K.-D.) Syngenta Crop Protection Canada, Inc., Plattsville, ON N0J 1S0, Canada. Phenotypic and genotypic investigation of resistance to fusarium head blight in a ‘Wuhan’/‘Maringa’ spring wheat doubled-haploid population. M.P. Pradhan, J. Gilbert, and S. Haber. Cereal Research Centre, Agriculture and Agri-Food Canada, 195 Dafoe Road, Winnipeg, MB R3T 2M9, Canada. Infection of American ginseng leaves by Alternaria panax. H.A. Quayyum and J.A. Traquair. Efficacy and Sustainability Assessment Division, Pest Management Regulatory Agency, 2720 Riverside Drive, Ottawa, ON K1A 0K9, Canada; and (J.A.T.) Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, 1391 Sandford Street, London, ON N5V 4T3, Canada. Detection, by polymerase chain reaction, of antibiotics produced by bacterial biocontrol agents of the blackleg pathogen Leptosphaeria maculans of canola. R. Ramarathnam and W.G.D. Fernando. Department of Plant Science, 222 Agriculture Building, University of Manitoba, Winnipeg, MB R3T 2N2, Canada. Update on yield losses and control of pasmo in flax. K.Y. Rashid. Cereal Research Centre, Agriculture and Agri-Food Canada, Morden Research Station, Unit 100–101, Route 100, Morden, MB R6M 1Y5, Canada. Resistance genes to Leptosphaeria maculans in Brassica spp. S.R. Rimmer. Saskatoon Research Centre, Agriculture and Agri-Food Canada, 107 Science Place, Saskatoon, SK S7N 0X2, Canada. Pathogen interactions of various Verticillium spp. within potato plants and their effect on host development. N. Robinson, H.W. (Bud) Platt, L. Hale, and V. MacLean. Crops and Livestock Research Centre, Agriculture and Agri-Food Canada, 440 University Avenue, Charlottetown, PE C1A 4N6, Canada; and (L.H.) Department of Biology, University of Prince Edward Island, 550 University Avenue, Charlottetown, PE C1A 4P3, Canada. Biological control of Fusarium spp. in forest nurseries of Central Siberia. V.S. Sadykova, T.I. Gromovykh, A.N. Likhachev, and Y.A. Litovka. Siberian State Technological University, pr. Mira, 82, Krasnoyarsk, 660049, Russia; and (A.N.L.) Biological Department, Moscow State University, nm. M.V. Lomonosova, Leninskie gory, Moscow, 119992, Russia. Global gene profiling of Fusarium graminearum. A. Saparno, L. Harris, J. Hattori, B. Blackwell, A. DeMoors, S. Kelso, L. Robert, H. Rocheleau, J. Schernthaner, D. Sprott, N. Tinker, R. Watson, and T. Ouellet. Bioproducts and Bioprocessing, Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-Food Canada, 960 Carling Avenue, Ottawa, ON K1A 0C6, Canada. Enhancing the relevance of fungal taxonomy for plant pathologists: phylogenetics, molecular diagnostics, and long-term memory. K.A. Seifert. Biodiversity Theme (Mycology and Botany), Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-Food Canada, 960 Carling Avenue, Ottawa, ON K1A 0C6, Canada. Effect of poultry manure and sawdust on survival of sclerotia of Macrophomina phaseolina in soil. A.H. Shaikh. Department of Botany, Federal Urdu University of Arts, Sciences, and Technology, Gulshan-e-Iqbal Campus, Karachi 75300, Pakistan. Genetic analysis of differential response of Pyrenophora tritici-repentis, race 5, on durum and common wheat. P.K. Singh and G.R. Hughes. Department of Plant Sciences, 51 Campus Drive, University of Saskatchewan, Saskatoon, SK S7N 5A8, Canada. Resistance breeding to nonnative pathogens in forest trees: classical breeding approach. R.A. Sniezko. Dorena Genetic Resource Centre, Forest Service, United States Department of Agriculture, 34963 Shoreview Road, Cottage Grove, OR 97424, USA. Preliminary characterization of Plasmodiophora brassicae populations from Alberta, Canada. S.E. Strelkov and J.P. Tewari. Department of Agricultural, Food and Nutritional Science, University of Alberta, 410 H Agriculture/Forestry Centre, Edmonton, AB T6G 2P5, Canada. Assessment of yield loss caused by mycosphaerella blight [Mycosphaerella pinodes] on field peas. H. Su, S.F. Hwang, K.F. Chang, R.L. Conner, and G.D. Turnbull. Alberta Research Council, Bag 4000, Vegreville, AB T9C 1T4, Canada; (K.F.C.) Field Crop Development Centre, Alberta Agriculture, Food and Rural Development, Lacombe, AB T4L 1W1, Canada; and (R.L.C.) Cereal Research Centre, Agriculture and Agri-Food Canada, Morden Research Station, Unit 100–101, Route 100, Morden, MB R6M 1Y5, Canada. Standardizing and quantifying hybridization results in a Pythium macroarray made of specific oligonucleotides. J.T. Tambong, T. Barasubiye, N. Desaulniers, and C.A. Lévesque. Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-Food Canada, 960 Carling Avenue, Ottawa, ON K1A 0C6, Canada. Host specialization of the pathogen causing root rot of cocoyam. J.T. Tambong, M. Perneel, M. Höfte, and C.A. Lévesque. Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-Food Canada, 960 Carling Avenue, Ottawa, ON K1A 0C6, Canada; and (M.P., M.H.) Laboratory of Phytopathology, Ghent University, Coupure Links 653 Gent, B-9000, Belgium. Influence of seeding rates and fungicides on emergence, survival, flowering time, fusarium head blight, and deoxynivalenol in winter wheat. L. Tamburic-Ilincic and A.W. Schaafsma. Ridgetown College, University of Guelph, Main Street East, Ridgetown, ON N0P 2C0, Canada. A DNA sequence capture method for the detection of Plasmodiophora brassicae in the soil. J-S. Tremblay, L. Laverdière, N. Daigle, D. Leclerc, and R. Hogue. Institut de recherche et de développement en agroenvironnement, 2700 Einstein Street, Sainte-Foy, QC G1P 3W8, Canada; (L.L.) Horti-Protection Inc., 11 des Peupliers Street, Breakeyville, QC G0S 1E1, Canada; and (D.L.) Centre de recherche en infectiologie, Québec, QC G1V 4G2, Canada. Forecasting the potential distribution and severity of fusarium head blight in the prairie region of Canada, using CLIMEX™ modelling and historical and future weather conditions. T.K. Turkington, O.O. Olfert, R.M. Weiss, R.M. Clear, K. Xi, and J.P. Tewari. Lacombe Research Centre, Agriculture and Agri-Food Canada (AAFC), 6000 C&E Trail, Lacombe, AB T4L 1W1, Canada; (O.O.O., R.M.W.) Saskatoon Research Centre, AAFC, 107 Science Place, Saskatoon, SK S7N 0X2, Canada; (R.M.C.) Grain Research Laboratory, Canadian Grain Commission, 1404- 303 Main Street, Winnipeg, MB R3C 3G8, Canada; (K.X.) Field Crop Development Centre, Alberta Agriculture, Food and Rural Development, 6000 C&E Trail, Lacombe, AB T4L 1W1, Canada; and (J.P.T.) Department of Agricultural, Food, and Nutritional Science, 410 H Agriculture/Forestry Centre, University of Alberta, Edmonton, AB T6G 2P5, Canada. Biological control of potato verticillium wilt. A.K. Uppal and F. Daayf. Department of Plant Science, 222 Agriculture Building, University of Manitoba, Winnipeg, MB R3T 2N2, Canada. Preventive and curative biological treatments for control of stem canker [Botrytis cinerea] on greenhouse tomato. R.S. Utkhede and S. Mathur. Pacific Agri-Food Research Centre, Agriculture and Agri-Food Canada, P.O. Box 1000, Agassiz, BC V0M 1A0, Canada. Pathogenic and genetic variability of Ascochtya rabiei populations on chickpea in Saskatchewan. S. Vail and S. Banniza. Crop Development Centre, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK S7N 5E2, Canada. Disease discriminatory volatile metabolites from onion bulbs inoculated with postharvest pathogens. A. Vikram and A.C. Kushalappa. Plant Science Department, McGill University, 21111 Lakeshore Road, Sainte-Anne-de- Bellevue, QC H9X 3V9, Canada. Biocontrol fungal taxa in black spruce rhizosphere revealed by phenotypic taxonomy and internal transcribed spacer phylogeny. V. Vujanovic and M. St-Arnaud. Institut de recherche en biologie végétale, 4101 East Sherbrooke Street, Montréal, QC H1X 2B2, Canada. Enumeration of plant pathogenic Streptomyces on potato tubers in storage. A. Wang and G. Lazarovits. Department of Biology, University of Western Ontario, London, ON N6A 5B7, Canada; and (G.L.) Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, London, 1391 Sanford Street, ON N5V 4T3, Canada. Role of seed tubers in the spread of pathogenic Streptomyces in soil and development of potato scab. A. Wang and G. Lazarovits. Department of Biology, University of Western Ontario, London, ON N6A 5B7, Canada; and (G.L.) Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, London, 1391 Sanford Street, ON N5V 4T3, Canada. In vitro study of host-plant specificity of Rhizoctonia solani in Alberta. H. Wang, S.F. Hwang, K.F. Chang, G.D. Turnbull, and R.J. Howard. Alberta Research Council, Bag 4000, Vegreville, AB T9C 1T4, Canada; (K.F.C.) Field Crop Development Centre, Alberta Agriculture, Food and Rural Development (AAFRD), Lacombe, AB T4L 1W8, Canada; and (R.J.H.) Crop Diversification Centre South, AAFRD, Brooks, AB T1R 1E6, Canada. Markers to and chromosome location of the resistance gene Bt12 to common bunt in common wheat (Triticum aestivum). S. Wang, R.E. Knox, R.M. DePauw, and J.M. Clarke. Semiarid Prairie Agricultural Research Centre, Agriculture and Agri-Food Canada, 1 Airport Road, P.O. Box 1030, Swift Current, SK S9H 3X2, Canada. Differential expression of PR proteins in potato leaves infected with US-1 and US-8 genotypes of Phytophthora infestans. X. Wang, A. El Hadrami, and F. Daayf. Department of Plant Science, 222 Agriculture Building, University of Manitoba, Winnipeg, MB R3T 2N2, Canada. Effect of nitrogen application rate on alternaria and cercospora leaf blight of carrots. S.M. Westerveld, A.W. McKeown, and M.R. McDonald. Department of Plant Agriculture, Crop Science Building, University of Guelph, Guelph, ON N1G 2W1, Canada; and (A.W.M.) Simcoe Campus, Department of Plant Agriculture, University of Guelph, P.O. Box 587, Simcoe, ON N3Y 4N5, Canada. Forest pathogens versus biodiversity: friend or foe? R.S. Winder and S.F. Shamoun. Pacific Forestry Centre, Canadian Forest Service, Natural Resources Canada, 506 West Burnside Road, Victoria, BC V8Z 1M5, Canada. Interaction of scald and net blotch of barley in relation to seeding dates. K. Xi, C. Bos, J. Helm, T. Duggan, and P. Juskiw. Field Crop Development Centre, Alberta Agriculture, Food and Rural Development, 6000 C&E Trail, Lacombe, AB T4L 1W1, Canada. Evaluation of components of resistance to powdery mildew in field pea. A.G. Xue, B.S. Dyck, and T.D. Warkentin. Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-Food Canada (AAFC), 960 Carling Avenue, Ottawa, ON K1A 0C6, Canada; (B.S.D.) Cereal Research Centre, AAFC, 195 Dafoe Road, Winnipeg, MB R3T 2M9, Canada; and (T.D.W.) Crop Development Centre, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK S7N 5A8, Canada. Effect of harvesting time on incidence of seed-borne Fusarium spp. in spring wheat in eastern Ontario. A.G. Xue, J. Frégeau-Reid, J. Rowsell, C. Babcock, G.J. Hoekstra, E. Sparry, Y. Chen, and F. Sabo. Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-Food Canada, 960 Carling Avenue, Ottawa, ON K1A 0C6, Canada; (J.R.) New Liskeard Agricultural Research Station, Box 6007, 340 Armstrong Street, New Liskeard, ON P0J 1P0, Canada; (G.J.H.) 506 Clothier Street West, R.R. 5, Kemptville, ON K0G 1J0, Canada; and (E.S.) C&M Seeds, Palmerston, ON N0G 2P0, Canada. Pathogenicity of Fusarium spp. causing head blight in barley. A.G. Xue, K.M. Ho, C. Babcock, Y. Chen, F. Sabo, and M. Kuc. Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-Food Canada, 960 Carling Avenue, Ottawa, ON K1A 0C6, Canada. Effects of harvesting times on incidence of Fusarium spp. in kernels of silage corn in Ontario. A.G. Xue, B.L. Ma, R.M. Clear, D.T. Chi, F. Sabo, and Y. Chen. Eastern Cereal and Oilseed Research Centre, Agriculture and Agri- Food Canada, 960 Carling Avenue, Ottawa, ON K1A 0C6, Canada; and (R.M.C.) Grain Research Laboratory, Canadian Grain Commission, 1404-303 Main Street, Winnipeg, MB R3C 3G8, Canada. Effect of exposure to sodium metabisulfite on bacterial ultrastructure. E.-S. Yaganza, D. Rioux, M. Simard, J. Arul, and R.J. Tweddell. Centre de recherche en horticulture, Pavillon de l'Envirotron, Université Laval, Québec, QC G1K 7P4, Canada; and (D.R., M.S.) Laurentian Forestry Centre, Canadian Forest Service, Natural Resources Canada, 1055 du P.E.P.S. Street, P.O. Box 3800, Québec, QC G1V 4C7, Canada. Ultrastructural alterations of Erwinia carotovora subsp. atroseptica resulting from exposure to aluminium chloride. E.-S. Yaganza, D. Rioux, M. Simard, J. Arul, and R.J. Tweddell. Centre de recherche en horticulture, Pavillon de l'Envirotron, Université Laval, Québec, QC G1K 7P4, Canada; and (D.R., M.S.) Laurentian Forestry Centre, Canadian Forest Service, Natural Resources Canada, 1055 du P.E.P.S. Street, P.O. Box 3800, Québec, QC G1V 4C7, Canada. Inheritance of resistance to stem rust in four accessions of Avena strigosa. T. Zegeye, T. Fetch, and L. Lamari. Department of Plant Science, 222 Agriculture Building, University of Manitoba, Winnipeg, MB R3T 2N2, Canada; and (T.F.) Cereal Research Centre, Agriculture and Agri-Food Canada, 195 Dafoe Road, Winnipeg, MB R3T 2M9, Canada. Detection of Apiosporina morbosa in Prunus virginiana by nested polymerase chain reaction. J.X. Zhang, W.G.D. Fernando, and W.R. Remphrey. Department of Plant Science, 222 Agriculture Building, University of Manitoba, Winnipeg, MB R3T 2N2, Canada. Presence of biosynthetic genes for phenazine-1-carboxylic acid, 2,4-diacetylphloroglucinol, and pyrrolnitrin in Pseudomonas chlororaphis strain PA-23. Y. Zhang and W.G.D. Fernando. Department of Plant Science, 222 Agriculture Building, University of Manitoba, Winnipeg, MB R3T 2N2, Canada.