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Virulence of Sclerotinia sclerotiorum and S. minor on Dandelion (Taraxacum officinale)

Published online by Cambridge University Press:  12 June 2017

Gordon E. Riddle ,
Lee L. Burpee  and
Gregory J. Boland
Gordon E. Riddle
Affiliation:
Dep. Environ. Biol. and the Guelph Turfgrass Inst., Univ. Guelph, Guelph, Ontario, Canada N1G 2W1
Lee L. Burpee
Affiliation:
Dep. Environ. Biol. and the Guelph Turfgrass Inst., Univ. Guelph, Guelph, Ontario, Canada N1G 2W1
Gregory J. Boland
Affiliation:
Dep. Environ. Biol. and the Guelph Turfgrass Inst., Univ. Guelph, Guelph, Ontario, Canada N1G 2W1
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Abstract

Sixty isolates of the plant pathogenic fungus Sclerotinia sclerotiorum (Lib.) de Bary and six isolates of Sclerotinia minor Jagger were evaluated in a controlled environment for virulence on leaves excised from 8-week-old dandelion plants. Significant negative correlations were obtained between the relative virulence of the isolates and the dry weights of dandelion plants inoculated in a controlled environment; and positive correlations were detected between the relative virulence of isolates and reduction in number of dandelion plants in turfgrass swards infested with inoculum of the isolates. In August 1988, an 80.7% reduction in the number of dandelion plants was detected in a turfgrass sward treated in 1987 with four applications of heat-killed seed of perennial ryegrass (100 g m−2 application–1) infested with isolate R30 of S. sclerotiorum, followed by six applications at the same rate in 1988. Populations of dandelions in untreated swards increased by 22.2% during the same period. Heat-killed seed of perennial ryegrass (100 g m−2) infested with isolate R30 applied simultaneously with dandelion seed (25 g m−2) onto a sward of Kentucky bluegrass reduced the establishment of dandelion seedlings by 85.5%. Necrosis or discoloration did not develop on Kentucky bluegrass, creeping bentgrass, annual bluegrass, or quackgrass treated with inoculum of Sclerotinia. Sclerotia of Sclerotinia spp. were found, on occasion, in crowns but not on the foliage of diseased dandelions.

Keywords

Dandelion, Taraxacum officinale Weber in Wiggers # TAROFKentucky bluegrass, Poa pratensis L. ‘Ram 1’ # POAPRcreeping bentgrass, Agrostis palustris Huds. # AGSPLannual bluegrass, Poa annua L. # POAANquackgrass, Agropyron repens (L.) Beauv. # AGREEBiological controlmycoherbicidePoa pratensisAgrostis palustrisP. annuaAgropyron repensTAROFPOAPRAGSPLPOAANAGREE

Information

Type
Special Topics
Information
Weed Science , Volume 39 , Issue 1 , March 1991 , pp. 109 - 118
Copyright
Copyright © 1991 by the Weed Science Society of America 

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References

Literature Cited

1. Abawi, G. S. and Grogan, R. G. 1979. Epidemiology of diseases caused by Sclerotinia species. Pathopathology 69:899–904.CrossRefGoogle Scholar
2. Adams, P. B. and Tate, C. J. 1976. Mycelial germination of sclerotia of Sclerotinia sclerotiorum on soil. Plant Dis. Rep. 60:515–518.Google Scholar
3. Cochrane, W. P., Singh, J., and Wakeford, B. 1981. Determination of chlorinated dibenzo-p-dioxin contaminants in 2,4-D products by gas chromatography:mass spectrometric techniques. J. Chromatogr. 217:289–299.CrossRefGoogle Scholar
4. Cullen, J. M. and Hasan, S. 1988. Pathogens for the control of weeds. Philos. Trans. R. Soc. Lond. B. 318:213–224.Google Scholar
5. Dhingra, O. D. and Sinclair, J. B. 1985. Inoculation of detached plant parts. Pages 161–162 in Basic Plant Pathology Methods. CRC Press, Inc. Boca Raton, FL.Google Scholar
6. Farr, D. F., Bills, G. F., Chamuris, G. P., and Rossman, A. Y. 1989. Page 87 in Fungi on Plants and Plant Products in the United States. APS Press, St. Paul, MN.Google Scholar
7. Freeman, M. F. and Tukey, J. W. 1950. Transformations related to the angular and square root. Ann. Math. Stats. 21:607–611.CrossRefGoogle Scholar
8. Ginns, J. H. 1986. Compendium of plant disease and decay fungi in Canada 1960–1980. Agric. Can. Publ. 1813. 413 pp.Google Scholar
9. Gleason, H. A. and Cronquist, A. 1963. Pages 209–211 in Manual of Vascular Plants of Northeastern United States and Adjacent Canada. Willard Grant Press, Boston, MA.Google Scholar
10. Hancock, J. G. 1966. Degradation of pectic substances associated with pathogenesis by Sclerotinia sclerotiorum in sunflower and tomato stems. Phytopathology 56:975–979.Google Scholar
11. Held, V. M. 1955. Physiological differences between a normal and a degenerate strain of Sclerotinia trifoliorum . Phytopathology 45:39–42.Google Scholar
12. Hoar, S. K., Blair, A., Holmes, F. A., Boysen, C. D., Robel, R. J., Hover, R., and Fraumeni, J. F. 1986. Agricultural herbicide use and risk of lymphoma and soft-tissue sarcoma. J. Am. Med. Assoc. 256:1141–1147.CrossRefGoogle ScholarPubMed
13. Hoes, J. A. and Huang, H. C. 1975. Sclerotinia sclerotiorum: viability and separation of sclerotia from soil. Phytopathology 65:1431–1432.CrossRefGoogle Scholar
14. Keller, N. P., Yoder, O. C., and Bergstrom, G. C. 1987. Pathogenic fitness of transformed Cochliobolus heterostrophus. (Abstr.) Phytopathology 77:1754.Google Scholar
15. Keller, N. P., Yoder, O. C., and Bergstrom, G. C. 1988. Evaluation of effects of foreign DNA on fitness of Cochliobolus heterostrophus. (Abstr.) Phytopathology 78:1588.Google Scholar
16. Lumsden, R. D. 1969. Sclerotinia sclerotiorum infection of bean and the production of cellulase. Phytopathology 59:653–657.Google Scholar
17. Lumsden, R. D. 1970. Phosphatidase of Sclerotinia sclerotiorum produced in culture and in infected bean. Phytopathology 60:1106–1110.CrossRefGoogle Scholar
18. Lumsden, R. D. 1976. Pectolytic enzymes of Sclerotinia sclerotiorum and their localization in infected bean. Can. J. Bot 54:2630–2641.CrossRefGoogle Scholar
19. Lumsden, R. D. 1979. Histology and physiology of pathogenesis in plant diseases caused by Sclerotinia spp. Phytopathology 69:890–896.CrossRefGoogle Scholar
20. Marciano, P., Di Lenna, P., and Magro, P. 1983. Oxalic acid, cell wall-degrading enzymes and pH in pathogenesis and their significance in the virulence of two Sclerotinia sclerotiorum isolates on sunflower. Physiol. Plant Pathol. 22:339–345.CrossRefGoogle Scholar
21. Maxwell, D. P. and Lumsden, R. D. 1970. Oxalic acid production by Sclerotinia sclerotiorum in infected bean and in culture. Phytopathology 60:1395–1398.CrossRefGoogle Scholar
22. McLean, D. M. 1951. Sclerotinia stem rot and Ramularia leaf spot of dandelion grown for seed in Skagit County, Washington, Plant Dis. Rep. 35:162–163.Google Scholar
23. Miller, R. V., Ford, E. J., and Sands, D. E. 1987. Induced auxotrophic and non-sclerotial isolates of Sclerotinia sclerotiorum (Abstr.) Phytopathology 77:1720.Google Scholar
24. Miller, R. V., Ford, E. J., and Sands, D. C. 1989. A nonsclerotial pathogenic mutant of Sclerotinia sclerotiorum . Can. J. Microbiol. 35:517–520.CrossRefGoogle Scholar
25. Miller, R. V., Ford, E. J., and Sands, D. E. 1987. Reduced host-range mutants of Sclerotinia sclerotiorum. (Abstr.) Phytopathology 77:1695.Google Scholar
26. Mortensen, J. 1986. Biological control of weeds with plant pathogens. Can. J. Plant Pathol. 8:229–231.CrossRefGoogle Scholar
27. Noyes, R. D. and Hancock, J. G. 1981. Role of oxalic acid in the Sclerotinia wilt of sunflower. Physiol. Plant Pathol. 18:123–132.CrossRefGoogle Scholar
28. Purdy, L. H. 1979. Sclerotinia sclerotiorum: History, diseases and symptomatology, host range, geographic distribution, and impact. Phytopathology 69:875–880.CrossRefGoogle Scholar
29. Riddle, G. E. 1989. Biological control of dandelions in turfgrass swards by isolates of Sclerotinia sclerotiorum and S. minor. M.S. Thesis, Dep. Environ. Biol., Univ. Guelph, Guelph, Ontario N1G 2W1. 88 pp.Google Scholar
30. Smiley, R. W. 1983. Compendium of turfgrass diseases. Am. Phytopathol. Soc., St. Paul, MN. 102 pp.Google Scholar
31. Steel, R.G.D. and Torrie, J. H. 1980. Principles and procedures in statistics. A biometrical approach. McGraw-Hill Book Co., New York. 633 pp.Google Scholar
32. Tebeest, D. O. and Templeton, G. E. 1985. Mycoherbicides. Progress in biological control of weeds. Plant Dis. 69:6–10.Google Scholar