Full TGIF Record # 233617
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Web URL(s):https://web.archive.org/web/20160212130552/http://www.turfgrasssociety.eu/home/articles/code/431?headline=Prevalence%20and%20Genetic%20Structure%20of%20Sclerotinia%20homoeocarpa%20on%20Commercial%20Creeping%20Bentgrass%20Seed
    Last checked: 04/15/2016
Publication Type:
Author(s):Rioux, R.; van Ryzin, B.; Schultz, J.; Kerns, J.
Title:Prevalence and genetic structure of Sclerotinia homoeocarpa on commercial creeping bentgrass seed
Meeting Info.:Kristiansand, Norway: June 24-26, 2012
Source:3rd European Turfgrass Society Conference Proceedings. Vol. 3, 2012, p. Unknown.
# of Pages:0
Publishing Information:Angers, France: European Turfgrass Society
Keywords:TIC Keywords: Agrostis stolonifera; Cultivar evaluation; Disease profile; Disease susceptibility; Genetic structure; Sclerotinia homoeocarpa; Seed production
Cultivar Names:Penncross; Shark; Crenshaw; Declaration
Abstract/Contents:"Dollar spot, caused by Sclerotinia homoeocarpa (F.T. Bennett), is one of the most common diseases of turfgrasses worldwide. In North America, dollar spot epidemics develop an in aggregated fashion with limited secondary spread and isolates collected from cool-season hosts have limited genetic diversity. The majority of seed for cool-season grasses, such as creeping bentgrass (Agrostis stolonifera L.; CRB). is produced in a relatively small region in the Western United States. These factors together indicate a common source may be responsible for most S. homoeocarpa found on cool-season turfs. The aim of the current study was to determine the prevalence and genetic structure of S. homoeocarpa isolated from commercial CRB seed. Four cultivars, 'Penncross', 'Declaration', 'Shark', and 'Crenshaw', from three sources were tested. Random 0.5 g aliquots of seed were plated either directly from the bag or following surface disinfestation with a 0.6% sodium hypochlorite solution on semi-selective media for S. homoeocarpa. Colonies resembling S. homoeocarpa were subcultured onto fresh media and identified by morphology and ITS sequence. Genetic relatedness of isolates was determined by vegetative compatibility grouping and sequence comparison of conserved genes EF1- , -tubulin, CPS, and the ITS/5.8S region. Results indicate that approximately 0.001% of commercial seed is infected with S. homoeocarpa, with or without surface sterilization. Genetic characterization to determine the relatedness of S. homoeocarpa isolated from seed is currently underway. Recognition of commercial seed as a possible source for S. homoeocarpa inoculum may facilitate improved disease control and decreased introduction of the pathogen to freshly seeded areas."
Note:Summary appears as abstract
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Rioux, R., B. van Ryzin, J. Schultz, and J. Kerns. 2012. Prevalence and genetic structure of Sclerotinia homoeocarpa on commercial creeping bentgrass seed. Eur. Turfgrass Soc. Conf. Proc. 3:p. Unknown.
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    Last checked: 04/15/2016
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