The Plant Pathology Journal

The Korean Society of Plant Pathology (한국식물병리학회)
권호 표지
DOI QR코드

DOI QR Code

Detection of Myrothecium Leaf Spot, A New Disease of Watermelon

  • Kim, Dong-Kil (Research Institute of Life Science, Gyeongsang National University) ;
  • Bae, Dong-Won (Central Laboratory, Gyeongsang National University) ;
  • Lee, Sun-Chul (Research Institute of Life Science, Gyeongsang National University) ;
  • Han, Ki-Soo (Division of Plant Resources and Environment, Gyeongsang National University) ;
  • Kim, Hee-Kyu (Division of Plant Resources and Environment, Gyeongsang National University)
  • Published : 2003.08.01
Download PDF
⟨ Previous Next ⟩

Abstract

Leaf spots were first observed on watermelon (Citrullus vulgaris Schrad) under polyethylene film-covered green-house in November 2002. Symptoms appeared as dark-brown circles or large irregular spots on the leaves of watermelon. Occasionally, zonal growth of the lesions was observed. Under humid conditions, small black sclerotium-like bodies (sporodochia) were produced on the surface of the lesions. The sporodochia on leaf lesions were sessile, polymorphic, variable in size, 35-850 $\mu\textrm{m}$ in diameter, and 30-470 $\mu\textrm{m}$ in depth. Conidia in sporodochium were black in mass, one-celled, rod-shaped, with rounded ends, hyaline, guttulate, and measured 6-8$\times$1.6-2.2 $\mu\textrm{m}$ in size. The pathogen was identified as Myrothecium roridum Tode ex Fr. This is the first report of Myrothecium leaf spot on watermelon naturally occurring in commercial greenhouses.

Keywords

References

  1. Cunfer, B. M., Graham, J. H. and Lukezic, F. L. 1969. Studies on the biology of Myrothecium roridum and M. verrucaria pathogenic on red clover. Phytopathology 59: 1306-1309
  2. Dake, G. N. 1980. Effect of Myrothecium roridum on the germination of cotton seeds. Indian Phytopathol. 33:591-593
  3. Ellis, M. B. 1971. Myrothecium. In: Dematiaceous Hyphomycetes pp. 552-556. Commonwealth Mycological Insitute CAB, Kew, Surrey, England
  4. Fernando, T. B., Jarvis, B. and Bean, G. 1986. Effects of microelements on production of roridin E by Myrothecium roridum, a strain pathogenic to muskmelon (Cucumis melo) Trans. Br. Mycol. Soc. 86:273-277 https://doi.org/10.1016/S0007-1536(86)80156-5
  5. Fitton, M. and Holliday, P. 1970. Myrothecium roridum. CMI Descriptions of pathogenic fungi and bacteria No. 253, U.K.
  6. Gaur, S. C. and Pathak, V. N. 1977. Physiological studies on Myrothecium roridum inciting fruit rot of tomato. Indian J. Mycol. Plant Pathol. 9:109-110
  7. Kishi, K. et al. 1998. Plant diseases in Japan. Published by the Rural Education Association. 1276p. (In Japanese)
  8. Kuti, J. O., Ng, T. J. and Bean, G. A. 1987. Reaction of muskmelon cultigens to Myrothecium roridum. Hortscience 22: 635-637
  9. Kuti, J. O., Ng, T. J. and Bean, G. A. 1989. Possible involvement of a pathogen-produced trichothecene metabolite in Myrothecium leaf spot of muskmelon. Physiol. Mol. Plant Pathol. 34:41-54 https://doi.org/10.1016/0885-5765(89)90015-5
  10. Schiller, C. T., Hepperly, P. R. and Sinclair, J. B. 1978. Pathogenicity of Myrothecium roridum from Illinois soybeans. Plant Dis. Rep. 62:882-885
  11. Shim, H. K, Lee, D. K, Lee, G. S. and Yu, S. H. 1996. Fungi associated with seed and seedling diseases of peanut. RDA. J. Agri. Sci. 38:507-515. (In Korean)
  12. Stevenson, J. A. and McColloch, L. P. 1947. Myrothecium as a tomato fruit rot organism. Plant Dis. Rep. 31: 147-149
  13. Tewari, J. P. and Skoropad, W. P. 1977. Myrothecium roridum, a potential pathogen of rapeseed and mustard in Alberta. Can. Plant Dis. Surv. 57:37-41
  14. Yum, K. J. and Park, E. W. 1990. Soybean leaf spot disease caused by Myrothecium roridum Tode ex Fries. Korean. J. Plant Pathol. 6:313-317. (In Korean)
  15. Zitter, T. A., Hopkins, D. L. and Thomas, C. E. 1998. Compendium of Cucurbit Diseases. American Phytopathol. Soc. Press, 87p

Cited by

  1. Cucurbit Host Range of <i>Myrothecium roridum</i> Isolated from Watermelon vol.03, pp.03, 2012, https://doi.org/10.4236/ajps.2012.33042
  2. Characterization ofMyrothecium roridumIsolated from Imported Anthurium Plant Culture Medium vol.42, pp.1, 2014, https://doi.org/10.5941/MYCO.2014.42.1.82
  3. Biocontrol potential of Myrothcium roridum Tode ex Fr. (Hypocreales: Incertae sedis) against root-knot nematode Meloidogyne incognita (Kofoid & White) Chitwood (Tylenchida: Heteroderidae) vol.19, pp.2, 2016, https://doi.org/10.1016/j.aspen.2016.04.011
  4. Verrucarin A and roridin E produced on spinach by Myrothecium verrucaria under different temperatures and CO2 levels vol.33, pp.2, 2017, https://doi.org/10.1007/s12550-017-0273-2
  5. First Report ofMyrothecium roridumCausing Leaf and Stem Rot Disease onPeperomia quadrangularisin Korea vol.42, pp.2, 2014, https://doi.org/10.5941/MYCO.2014.42.2.203
  6. Leaf Spot and Stem Canker on Watermelon in the Southern Great Plains: Possible Factors for Its Outbreak vol.13, pp.1, 2012, https://doi.org/10.1094/PHP-2012-0130-01-BR