Back
 AJPS  Vol.3 No.3 , March 2012
Cucurbit Host Range of Myrothecium roridum Isolated from Watermelon
Abstract: In 2010, a foliar and stem-lesion disease that produced moderate to severe defoliation of watermelon was observed in the southern Great Plains. The disease was ultimately determined to be caused by Myrothecium roridum. The objective of this study was to compare the susceptibility of the vegetation and fruit of a broad range of commercially important cucurbits to three isolates obtained from these foliar lesions on watermelon. In greenhouse foliar inoculation experiments, cantaloupe, honeydew, cucumber, squash, and watermelon were susceptible to the fungus with cantaloupe and honeydew being the most susceptible and watermelon the most resistant. Furthermore, greenhouse inoculations supported earlier field observations as differential resistance was exhibited among the watermelon cultivars as well as the cucurbit types. All tested cucurbit fruit exhibited interior lesions when inoculated sub-epidermally with M. roridum isolates. However, natural infection of watermelon and pumpkin fruit has never been reported.
Cite this paper: W. W. Fish, B. D. Bruton and T. W. Popham, "Cucurbit Host Range of Myrothecium roridum Isolated from Watermelon," American Journal of Plant Sciences, Vol. 3 No. 3, 2012, pp. 353-359. doi: 10.4236/ajps.2012.33042.
References

[1]   B. D. Bruton, “Crater Rot,” In: T. A. Zitter, D. L. Hopkins and C. E. Thomas, Eds., Compendium of Cucurbit Diseases, The American Phytopathological Society, St. Paul, 1996, pp. 49-50.

[2]   A. R. Chase, “Influence of Host Plant and Isolate Source on Myrothecium Leaf Spot of Foliage Plants,” Plant Disease, Vol. 67, No. 6, 1983, pp. 668-671. doi:10.1094/PD-67-668

[3]   K. M. Ponappa, “On the Pathogenicity of Myrothecium roridum-Eichhornia crassipes Isolate,” Hyacinth Control Journal, Vol. 8, No. 1, 1970, pp. 18-20.

[4]   B. G. Bharath, S. Likesh, B. Yashovarma, H. S. Prakash, and H. S. Shetty, “Seed-Borne Nature of Myrothecium roridum in Watermelon Seeds,” Research Journal of Botany, Vol. 1, No. 1, 2006, pp. 44-45. doi:10.3923/rjb.2006.44.45

[5]   T. H. Nguyen, S. B. Mathur and P. Neergaard, “Seed-Borne Species of Myrothecium and Their Pathogenic Potential,” Transactions of the British Mycology Society, Vol. 61, No. 2, 1973, pp. 347-354. doi:10.1016/S0007-1536(73)80156-1

[6]   N. Sultana and A. Ghaffar, “Pathogenesis and Control of Myrothecium spp., the Cause of Leaf Spot on Bitter Gourd (Momordica charantia Linn.),” Pakistan Journal of Botany, Vol. 41, No. 1, 2009, pp. 429-433.

[7]   A. S. A. Wahid and A. S. Shakir, “Seed-Borne Mycoflora of Sponge Gourd in Punjab,” Pakistan Journal of Agricultural Research, Vol. 12, No. 2, 1991, pp. 151-152.

[8]   W. O. Okunowo, G. O. Gbenie, A. A. Osuntoki and A. A. Adekunie, “Media Studies on Myrothecium roridum Tode: A Potential Biocontrol Agent for Water Hyacinth,” Journal of Yeast and Fungal Research, Vol. 1, No. 4, 2010, pp. 55-61.

[9]   M. Fitton and P. Holliday, “Myrothecium roridum,” In: Commonwealth Mycological Institute. Descriptions of Pathogenic Fungi and Bacteria, No. 253, Commonwealth Agricultural Bureau, Kew, 1970, pp. 1-2.

[10]   D. M. McLean and B. Sleeth, “Myrothecium Rind Rot of Cantaloupe,” Plant Disease Reporter, Vol. 45, No. 9, 1961, pp. 728-729.

[11]   J. Worapong, J. Sun and G. Newcombe, “First Report of Myrothecium roridum from a Gymnosperm,” North American Fungi, Vol. 4, No. 6. 2009, pp.1-6. doi:10.2509/naf2009.004.006

[12]   C. S. Cabral, G. P. Henz, A. J. A. Moreira III and A. Reis II, “New Cucurbitaceous Hosts of Myrothecium roridum in Amazonas State, Brazil,” Tropical Plant Pathology, Vol. 34, No. 6, 2009, pp. 1-6.

[13]   D. K. Kim, D. W. Bae, S. C. Lee, K. S. Han, H. K. Kim, “Detection of Myrothecium Leaf Spot, a New Disease of Watermelon,” Plant Pathology Journal, Vol. 19, No. 4, 2003. pp. 200-202. doi:10.5423/PPJ.2003.19.4.200

[14]   K. W. Seebold Jr., D. B. Langston Jr., R. C, Kemerait Jr. and J. E. Hudgins, “First Report of a Leaf Spot and Stem Canker Caused by Myrothecium roridum on Watermelon in the United States,” Plant Disease, Vol. 89, No.3, 2005, p. 342. doi:10.1094/PD-89-0342A

[15]   B. D. Bruton and W. W. Fish, “Myrothecium roridum Leaf Spot and Stem Canker on Watermelon in the Southern Great Plains: Possible Factors for Its Outbreak,” Plant Health Progress, 2012. doi:10.1094/PHP-2012-0130-01-BR

[16]   G. A. Bean, T. Fernando, B. B. Jarvis and B. Bruton, “The Isolation and Identification of Trichothecene Metabolites from a Plant Pathogenic Strain of Myrothecium roridum,” Journal of Natural Products, Vol. 47, No. 4, 1984, pp. 727-729. doi:10.1021/np50034a031

[17]   J. O. Kuti, T. J. Ng and G. A. Bean, “Possible Involvement of a Pathogen-Produced Trichothecene Metabolite in Myrothecium Leaf Spot of Musk melon,” Physiological and Molecular Plant Pathology, Vol. 34, No. 1, 1989, pp. 41-54. doi:10.1016/0885-5765(89)90015-5

[18]   P. Healey, T. J. Ng and F. A. Hammerschlag, “Response of Leaf Spot-Sensitive and Tolerant Muskmelon (Cucumis melo L.) Cells to the Phytotoxin Roridin E,” Plant Science, Vol. 97, No. 1, 1994, pp. 15-21. doi:10.1016/0168-9452(94)90102-3

[19]   J. X. Jhang, B. D. Bruton and C. L. Biles, “Polygalacturonase Isozmes Produced by Phomopsis cucurbitae in Relation to Postharvest Decay of Cantaloupe Fruit,” Phytopathology, Vol. 87, No. 10, 1997, pp. 1020-1025. doi:10.1094/PHYTO.1997.87.10.1020

[20]   M. B. Ellis, “Myrothecium,” In: Dematiaceous Hyphomycetes, Commonwealth Mycological Institute, Kew, 1971, pp. 552-556.

[21]   J. A. Mangandi, T. E. Seijo and N. A. Peres, “First Report of Myrothecium roridum Causing Myrothecium Leaf Spot on Salvia spp. in the United States,” Plant Disease, Vol. 91, No. 6, 2007, p.772. doi:10.1094/PDIS-91-6-0772B

[22]   M. T. Mmbaga, Y. Li and M.-S. Kim, “First Report of Myrothecium roridum Causing Leaf Spot on Garden Hydrangea in the United States,” Plant Disease, Vol. 94, No. 1, 2010, p. 266.

[23]   Y. J. Zhao, B. J. Li, Y. X. Shi and X. W. Xie, “First Report of Myrothecioum Leaf Spot of Common Bean in China Caused by Myrothecium roridum,” Plant Disease, Vol. 94, No. 1, 2010, p.127. doi:10.1094/PDIS-94-1-0127-B

[24]   A. R. Chase and R. T. Poole, “Development of Myrothecium Leaf Spot of Dieffenbachia maculate ‘Perfection’ at Various Temperatures,” Plant Disease, Vol. 68, No. 6, 1984, pp. 488-490. doi:10.1094/PD-69-488

[25]   W. W. Carter, “Incidence and Control of Myrothecium roridum on Cantaloupe in Relation to Time of Fungicide Application,” Plant Disease, Vol. 64, No. 9, 1980, pp. 872-874. doi:10.194/PD-64-872

[26]   B. D. Bruton, “Myrothecium roridum: A Potentially Devastating Pathogen of Muskmelon in South Texas,” Phytopathology, Vol. 72, No. 1, 1982, p. 355.

 
 
Top