Abstracts of papers presented at the 4th International Verticillium Symposium, University of Guelph, Guelph, Ontario 17-21 August 1986

Abstract

Characteristics of an inoculated avocado rootstock resistant to verticillium wilt. V. Barchilon, Y. Pinkas, and A. Sztejnberg. Department of Plant Pathology, Agricultural Research Organization, The Volcani Center, Bet-Dagan50- 250, Israel and (A.Z.) Department of Plant Pathology and Microbiology, Faculty of Agriculture, The Hebrew University, Rehovot 76100, Israel.

The response of xylem parenchyma cells in tomato stems to vascular infection by Fusarium oxysporum f. sp. lycopersici. C.H. Beckman. University of Rhode Island. Kingston, Rhode Island 02881, USA.

Synergistic interaction of solarization and methamsodium in controlling microsclerotia of Verticillium dahliae. Y. Ben-Yephet, J.M. Melero, and J.E. Devay, Plant Pathology, Volcani Center, ARO, Bet-Dagan, Israel; Dept. Proteccion Vegetal, D.G.I.E.A., Apdo. 249, 14071, Cordoba, Spain; and Department of Plant Pathology, University of California, Davis, California 95616, USA.

Distribution and pathogenicity of Verticillium dahliae isolates infecting cotton in Andalucia, southern Spain. M.A. Bianco-Lopez, J.M. Melero-Vara, J. Bejarano- Alcazar, and J.M. Jimenez-Diaz. Catedra de Patologia Vegetal, E.T.S.I.A., Univ. Cordoba, Apdo. 3048, 14080, Cordoba, Espana, and (J.M.M.-V., J.B.-A.) Departamento de Proteccion Vegetal, D.G.I.E.A., Junta de Andalucia, Apdo. 240, 14080, Cordoba, Espana.

Occurrence, inoculation technique, varietal response, and chemical control of verticillium wilt of potatoes. M.J. Celetti, and H.W. (Bud) Platt. P.E.I. Potato Marketing Board, and Research Station, Agriculture Canada, P.O. Box 1210, Charlottetown, Prince Edward Island CIA 7M8, Canada.

Severe outbreaks of verticillium wilt on chicory (Cichorium intybus L.) and broccoli rab (Brassica rapa L.), and pathogenic variations among isolates of the fungus. F. Ciccarese, S. Frisullo, and M. Cirulli. Dipartimento Patologia végétale— University of Bari, Italy; and (S. F.) Istituto tossine e micotossine daparassiti vegetali, C.N.R., Bari, Italy.

Verticillium wilt of artichoke: aetiological studies and chemical control. M. Cirulli, F. Ciccarese, and S. Frisullo. Dipartimento di Patologia végétale — University of Bari, Italy; and (S.F.) Istituto tossine e micotossine da parassiti vegetali, C.N.R., Bari, Italy.

Verticillium wilt resistance in noncultivated tuber bearing solanums. D. Corsini, J. Pavek, and J.R. Davis. USDA-ARS, University of Idaho, Research and Extension Center, Aberdeen, ID 83210, USA.

Interactions between potato genotypes and rhizosphere organisms and the potential for the biological control of verticillium. J.R. Davis, H.R. Azad, S.L. Hafez, L.H. Sorensen, J.J. Pavek, and D.L. Corsini. University of Idaho, Aberdeen, ID 83210, USA; (H.R.-A.) Moscow, ID 83843, USA, and (S.L.F.) Parma, ID 83660, USA.

Effect of niethionine-riboflavin mixtures on ethylene production and on the viability of propagules of Verticillium dahliae in field soils and liquid culture media. J.E. Devay, D.D. Tzeng, and Esther Kapulnik Department of Plant Pathology, University of California, Davis, CA 95616, USA, and Department of Plant Pathology, National Chung-Hsing University, Taichung, Taiwan, Republic of China.

Verticillium wilt control and enhanced potato production following cropping to a green pea-sudangrass rotation. G.D. Easton and M.E. Nagle. Washington State University, Department of Plant Pathology, Irrigated Agriculture Research and Extension Center, Prosser, WA 99350, USA.

Accumulation of phytoalexins in susceptible and resistant near-isogenic lines of tomato inoculated with Verticillium albo-atrum or Fusarium oxysporum f. sp. lycopersici. D.M. Elgersmaand J.I. Liem. Willie Commelin Scholten Phytopathological Laboratory, Javalaan 20, 3742 CP Baarn, The Netherlands.

Use of Talaromyces flavus for the control of Verticillium dahliae. D.R. Fravel, K.K. Kim, and J.R. Davis. Soilborne Diseases Laboratory, Plant Protection Institute, Agricultural Research Service, U.S. Department of Agriculture, Beltsville, MD 20705, USA, and University of Idaho, Aberdeen, ID 83210, USA.

Isolation and partial purification of toxins produced by Verticillium dahliae. H.N. Gour. Department of Plant Physiology, S.K.N. College of Agriculture, Sukhadia University, Jobner (Jaipur), Rajasthan 303329, India.

VerticiUium dahliae as a biocontrol agent of velvetleaf Abutilon theophrasti. RJ. Green Jr., and G.L. Wiley. Department of Botany and Plant Pathology, Purdue University, W. Lafayette, IN 47907, USA.

Intraclonal variability of VerticiUium dahliae pathogenicity. B. Hadisutrisno, and C. Boisson. CNEARC/ ORSTOM, BP 5098, 34033 Montpellier Cedex — France.

Use of tissue culture to produce novel sources of resistance to VerticiUium albo-atrum attacking hop. J Heale, and S. Connel. King's College, London, UK.

Effect of temperature on survival of VerticiUium alboatrum on insect bodies or in insect fèces. H.C. Huang, A.M. Harper, and G.C. Kozub. Research Station, Agriculture Canada, Lethbridge, Alberta TU 4B1, Canada.

Colonization and infection by two isolates of VerticiUium dahliae on some crop species. J. Krikun and C.C. Bernier. Department of Plant Science, University of Manitoba, Winnipeg, Manitoba R3T2N2, Canada.

Interaction of Verticillium dahliae and Erwinia spp. pathogens of potato. G. Kritzman, A. Nachnias, and Y. Ben Yephet. Agricultural Research Organization, Bet Dagan, Israel 50 250 and M.C.M. Perombelon, Scottish Crop Research Institute, Mylnefield, Invergowrie, Dundee, Scotland.

Detection of verticillium antigens by dot-ELlSA on nitrocellulose membranes. G. Lazarovits, M. Bar-Joseph, and A. Nachmias. Research Centre, Agriculture Canada, University Sub P. O., London, Ontario, Canada N6A 5B7, and (M.B.-J. and A.N.) Dept. Plant Pathology, ARO, Volcani Centre, Bet Dagan, Israel.

Involvement of enzymes from bacterial sources in verticillium pathogenesis on potato. T. Leah and A. Nachmias. ARO, Agricultural Research Organization, Gilat Regional Experiment Station, Israel.

Verticillium wilt of alfalfa: interactions between the fungus and alfalfa callus lines. J.A. Lucas and A.O. Latunde-Dada. Department of Botany, University of Nottingham, Nottingham NG7 2RD, UK.

Epidemiological studies of verticillium wilt of cotton in relation to soil fungicide applications. J.M. Melero and J.E. Devay. Dept. Proteccion Vegetal. I.N.I.A. Apdo. 240, 14071 Cordoba, Spain, and Department of Plant Pathology, University of California, Davis, CA 95616, USA.

Relative water content and apparent sap flow velocity in verticillium-infected and uninfected peanut. H.A Melouk and D.L. Ketring. USDA-ARS, Plant Science and Water Conservation Laboratory, Box 1029, Stillwater, OK 74076, USA.

Verticillium dahliae and cultural practices studies. H. Moshir-Abadi and M. Daniali.Seed and Plant Improvement Institute — MARD ABAD Road Karaj, Iran.

Suppression of verticillium wilt of tomato by difluromethylornithine, a "suicide" inhibitor of polyamine biosynthesis. H. Mussell, J. Osmeloski, S.H. Wettlaufer, and L. Weinstein. Boyce Thompson, Institute for Plant Research, Cornell University, Ithaca, NY 14853, USA.

Verticillium dahliae race 2 — involvement of phytotoxin in the pathogenicity. A. Nachmias, V. Buchner, Y. Burstein, L. Tsror, and N.T. Keen. Dept. of Plant Pathology, University of California, Riverside, CA, USA; (V.B. and Y.B.) Depl. of Organic Chemistry, The Weizmann Inst. of Science, Rehovot, Israel; and (L. T.) Agricultural Research Organization, Gilat Exp. Station, Negev, Israel.

Selection of potato germplasm tolerant to verticillium wilt using a phytotoxin produced by Verticillium dahliae. A. Nachmias and J. Orenstein. Gilat Regional Experiment Station, Negev, Israel.

Cytological indications of resistance, susceptibility, and tolerance in alfalfa to inoculation with Verticillium alboatrum. A.G. Newcombe and E.J. Robb. Departments of Botany and Molecular Biology and Genetics, University of Guelph, Guelph, Ontario NIG 2 WI, Canada.

Metabolism of IAA and its precursors by Verticillium albo-atrum and Verticillium-intected tomatoes. G.F. Pegg. Department of Horticulture, University of Reading, Ear ley Gate, Reading, RG62AU, UK.

Rishitin induction in susceptible and resistant tomato isolines by spores, mycelial cell wall, and culture filtrate elicitors of Verticillium albo-atrum. G.F. Pegg. Department of Horticulture, University of Reading, Earley Gate, Reading, RG6 2A U, UK.

Macro- and microscopic responses of alfalfa to Verticillium albo-atrum. B.W. Pennypacker, K.T. Leath, and R.R. Hill, Jr. Penn State University and USDA-ARS, University Park, PA 16802, USA.

Induction of phenylalanine ammonia-lyase activity in Verticillium-infested tomato plants. D. Powell, J. Robb, and B. Ellis. Departments of Molecular Biology and Genetics and (B. E.) Chemistry and Biochemistry, University of Guelph, Guelph, Ontario NIG 2W1, Canada.

Colonization and symptoms in verticillium wilt of pepper. C. Regnani and A. Matta. Istituto di Patologia Végétale dell'Universita di Torini, Italy.

Chronological development of the vascular coating response in Verticillium-infested tomato plants. J. Robb and D. Powell. Department of Molecular Biology and Genetics, University of Guelph, Guelph, Ontario NIG 2WL.

Evidence for competitive antagonism in strains of pathogenic verticillia. R.R. Romanko and J. Jaeger. University of Idaho, SWIREC, Caldwell, ID 83605, USA.

The interaction of root lesion nematodes with Verticillium dahliae in potato early dying disease. R.C. Rowe and R.M. Riedel. Department of Plant Pathology, The Ohio State University, Ohio Agricultural Research and Development Center, Woosler 44691 and Columbus 43210, USA.

Genetic groups and geographical origins of Verticillium dahliae on Helianthus annum and H. tuberosus. W.E. Sackston, C. Laberge, and B. Vimard. Macdonald College of McGill University, Ste. Anne de Bellevue, Quebec H9X 1C0, Canada.

Soil solarization for the control of verticillium wilt in live orchard trees. E. Shabi, Y Pinkas, and J. Katan. Department of Plant Pathology, Agricultural Research Organization, The Volcani Center, P. O. Box 6, Bet Dagan 20250, Israel, and (J.K.) Department of Plant Pathology and Microbiology, The Hebrew University, Faculty of Agriculture, Rehovot 76100, Israel.

The influence of irrigation on the incidence and severity of verticillium wilt of Norway Maple. C. Shufelt and R.G. Linderman. Oregon State University, and USDA-ARS Horticultural Crops Research Lab, Corvallis, OR, USA.

The pesticide heptachlor and its influence on verticillium wilt of hops, Humulus lupulus. C.B. Skotland and R.R Romanko. Washington State University, Irrigated Agriculture Research Extension Center, Prosser, WA, USA, and University of Idaho, Southwest Idaho Research and Extension Center, Caldwell, ID, USA.

Occurrence of Verticillium dahliae in leaves of verticillium wilted olive-trees. E.C. Tjamos and B. Despina. Benaki Phytopathological Institute, 145 61 Kiphissia, Athens, Greece.

Long-term effect of soil solarization on verticillium wilt of artichokes in Greece. E.C. Tjamos and E.J. Paplomatos. Benaki Phytopathological Institute, 145 61 Kiphissia, Athens, Greece.

Recovery of verticillium wilted olive-trees after individual application of soil solarization. E.C. Tjamos, E.J. Paplomatas, and D.A. Biris. Benaki Phytopathological Institute, 145 61 Kiphissia, Athens, Greece; and (D.A.B.) Plant Protection Institute, 381 10 Volos, Greece.