Full TGIF Record # 91982
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Web URL(s):http://usgatero.msu.edu/v02/n20.pdf
    Last checked: 11/2003
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Author(s):Tisserat, N. A.; Iriarte, F. B.; Wetzel, H. C. III; Fry, J. D.; Martin, D. L.
Author Affiliation:Tisserat: Department of Plant Pathology, Kansas State University, Kansas; Iriarte: Postdoctoral Scientist, University of Florida, Florida; Wetzel: Biological Research and Development Scientist, Syngenta Crop Portection Inc., Florida; Fry: Department of Horticulture, Forestry and Recreational Resources, Kansas State University, Kansas; and Martin: Department of Horticulture and Landscape Architecture, Oklahoma State University, Oklahoma
Title:Identification, distribution, and aggressiveness of spring dead spot pathogens of bermudagrass
Source:USGA Turfgrass and Environmental Research Online. Vol. 2, No. 20, October 15 2003, p. [1-10].
# of Pages:10
Publishing Information:Far Hills, NJ: United States Golf Association, Green Section
Related Web URL:http://archive.lib.msu.edu/tic/gcman/article/2004apr117.pdf
    Last checked: 10/16/2008
    Requires: Adobe Acrobat
Keywords:TIC Keywords: Disease identification; Spring dead spot; Disease profile; Pathogens; Cynodon dactylon; Cynodon transvaalensis; Hybrid bermudagrasses; Ophiosphaerella herpotricha; Ophiosphaerella korrae; DNA; Amplification fragment length polymorphisms; Disease resistance; Disease distribution
Abstract/Contents:"Spring dead spot is a destructive disease of common bermudagrass (Cynodon dactylon) and bermudagrass hybrids (C. dactylon X C. transvalensis) throughout the northern range of its adaptation in the United States. For the past few years, researchers at Kansas State University and Oklahoma State University have investigated this serious turfgrass disease. Their findings include: Spring dead spot (SDS) of bermudagrass is caused by three closely related fungi: Ophiosphaerella herpotricha, O. korrae, and O. narmari. These fungi are difficult to distinguish by morphological characteristics in culture, but can be identified by selective DNA amplification using species-specific primers in a polymerase chain reaction technique. All three SDS pathogens are present in the United States, although there are regional differences in their distribution. O. herpotricha is the most common cause of SDS in Kansas and Oklahoma, whereas O. korrae appears to be the most prevalent pathogen in the southern United States. O. narmari is not common in the eastern or central United States, but may be more widely distributed in California. Preliminary data suggest that there are differences in aggressiveness among SDS pathogens to bermudagrass with O. herpotricha the most aggressive and O. narmari the least. However, further tests in other regions and including additional cultivars are needed to confirm these results. Although no bermudagrass cultivars are immune to SDS, the breeding program at Oklahoma State University has identified several selections, including the seeded varieties `Yukon' and `Riviera' and the vegetative types `Midlawn' and `Patriot' that have increased resistance to the disease. Researchers at Kansas State University and Oklahoma State University are currently developing greenhouse and laboratory-based assays to rapidly screen large numbers of bermudagrass selections for SDS resistance."
See Also:Other Reports from this USGA research project: 1998-31-139
Note:Partial reprint appears in Golf Course Management, 72(4) April 2004, p. 117-120
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Summary as abstract
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Tisserat, N. A., F. B. Iriarte, H. C. III Wetzel, J. D. Fry, and D. L. Martin. 2003. Identification, distribution, and aggressiveness of spring dead spot pathogens of bermudagrass. USGA Turfgrass Environ. Res. Online. 2(20):p. [1-10].
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    Last checked: 11/2003
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MSU catalog number: SB 433 .A1 A65 [online]
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