Full TGIF Record # 287769
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DOI:10.2134/itsrj2016.06.0497
Web URL(s):https://dl.sciencesocieties.org/publications/its/articles/13/1/133
    Last checked: 10/11/2019
    Access conditions: Item is within a limited-access website
Publication Type:
i
Refereed
Author(s):Gourlie, Ryan; Hsiang, Tom
Author Affiliation:School of Environmental Sciences, Univ. of Guelph, Guelph, Ontario, Canada
Title:Resistance to dicarboximide fungicides in a Canadian population of Microdochium nivale
Section:Diseases (plant pathology)
Other records with the "Diseases (plant pathology)" Section
Meeting Info.:New Brunswick, New Jersey: July 16-21, 2017
Source:International Turfgrass Society Research Journal. Vol. 13, 2017, p. 1-6.
Publishing Information:s.l.: International Turfgrass Society
# of Pages:6
Keywords:TIC Keywords: Dicarboximides; Fungicide efficacy; Fungicide evaluation; Fungicide resistance; Iprodione; Microdochium nivale
Geographic Terms:Victoria, British Columbia, Canada
Abstract/Contents:"Isolates of Microdochium nivale suspected of resistance to iprodione [3-(3,5-Dichlorophenyl)-N-isopropyl -2,4-dioxoimidazolidine-1-carboxamide] were collected from a golf course in Victoria, British Columbia (BC), Canada, in Fall 2015. The 9 BC isolates and 12 other reference isolates from around the world were tested with four concentrations of iprodione: 0, 1, 10, and 100 μg mL-1. The BC isolates showed a half maximal effective concentration (EC50) range of 14.2 to 40.8 μg mL-1 with a mean of 24.2 μg mL-1, while the non-BC isolates showed an EC50 range of 1.2 to 4.3 mg mL-1 with a mean of 1.9 μg mL-1. The yielded resistance factor (EC50 resistant/EC50 sensitive) of 12.7 implies that these BC isolates have been selected for reduced sensitivity to iprodione. This level of resistance may be responsible for the reduced efficacy, particularly the observed reduced interval of control, but further research is needed to assess this. A test of >100 isolates of M. nivale from a worldwide collection using a discriminatory concentration of 10 μg mL-1 of iprodione showed four isolates with similar levels of reduced sensitivity, but these were the only isolates from their respective populations."
Language:English
References:25
Note:TIC-hosted web link available 2 years after publication date.
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ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Gourlie, R., and T. Hsiang. 2017. Resistance to dicarboximide fungicides in a Canadian population of Microdochium nivale. Int. Turfgrass Soc. Res. J. 13:p. 1-6.
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DOI: 10.2134/itsrj2016.06.0497
Web URL(s):
https://dl.sciencesocieties.org/publications/its/articles/13/1/133
    Last checked: 10/11/2019
    Access conditions: Item is within a limited-access website
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