Golf Course Management

JUL 2018

Golf Course Management magazine is dedicated to advancing the golf course superintendent profession and helping GCSAA members achieve career success.

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72 GOLF COURSE MANAGEMENT 07.18 fungi that cause dollar spot after more than 80 years marks a significant milestone for these economically important pathogens. Moreover, the discovery of four distinctly different fungal species highlights the tre - mendous biological diversity present within this new genus. Although it is not yet known how this diversity relates to disease develop - ment or control, with the classification of dollar spot fungi finally resolved, researchers can now concentrate on specific dollar spot species to better understand the parameters that influence disease, as well as on the de - velopment of best management practices tai- lored to each pathogen. Funding is work was supported by USDA-ARS project 8042-22000-279-00D and the Cen - ter for Turfgrass Science, Rutgers University. is research was supported in part by the ap - pointment of C. Salgado-Salazar to the Ag- ricultural Research Service (ARS) Research Participation Program administered by the Oak Ridge Institute for Science and Educa - tion (ORISE) through an interagency agree- ment between the U.S. Department of En- ergy and the USDA. ORISE is managed by Oak Ridge Associated Universities (ORAU) under DOE contract number DE-AC05- 06OR23100. Acknowledgments e full manuscript of the publication de- scribing the new genus and species is available in the journal Fungal Biology at https://doi. org/10.1016/j.funbio.2018.04.004. Literature cited 1. Bennett, F.T. 1937. Dollarspot disease of turf and its causal organism, Sclerotinia homoeocarpa n. sp. Annals of Applied Biology 24:236-257. 2. Jackson, N. 1973. Apothecial production in Sclero - tinia homoeocarpa F.T. Bennett. Journal of the Sports Turf Research Institute 49:58-63. 3. Monteith, J. 1927. Can you identify brown patch? The National Greenkeeper 6:7-11. 4. Salgado-Salazar, C., L.A. Beirn, A. Ismaiel, M.J. Boehm, I. Carbone, A.I. Putman, L.P. Tredway, B.B. Clarke and J. Crouch. 2018. Clarireedia : A new fungal genus comprising four pathogenic species responsible for dollar spot disease of turfgrass. Fungal Biology - bio.2018.04.004. 5. Whetzel, H.H. 1946. The cypericolous and juncico- lous species of Sclerotinia. Farlowia 2:385-437. Lisa A. Beirn ( is a research and development scientist in the northeastern U.S. for Syngenta Lawn and Garden; Catalina Salgado-Salazar is a postdoctoral researcher at USDA-ARS Mycology and Nematology Laboratory in Beltsville, Md.; Lane P. Tredway is the southeastern U.S. technical manager for Syngenta Lawn and Garden in Triangle Park, N.C.; Bruce B. Clarke is director of the Center for Turfgrass Science and an Exten - sion specialist in turfgrass pathology in the Department of Plant Biology at Rutgers, The State University of New Jersey, New Brunswick, N.J.; and Jo Anne Crouch is a research molecular biologist with USDA-ARS Mycology and Nematology Laboratory in Beltsville, Md. The RESEARCH SAYS • Dollar spot disease was discovered on turfgrass in 1927, and its causal agent, a fungus, was named Sclerotinia homoeocarpa in 1937. • Over time, scientists concluded that dollar spot was not caused by a member of the Sclerotinia genus, but the name was not changed until breakthroughs in DNA-based technology proved that the causal agents of dollar spot were distinct species representing a new genus. • Four new species of the new genus Clarireedia were identified and named in a publication released in 2018.

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