quinol oxidation inhibitors (qois) are one of the most important classes of fungicides used in agriculture. they block electron transfer between cytochrome b and cytochrome c1, thereby impeding the production of atp via oxidative phosphorylation. qoi fungicides are generally at high risk of provoking resistance in fungal phytopathogens. resistance has been reported in more than thirty species, ...

Turfgrass managers have anecdotally reported decreased efficacy of DMI fungicides for the control Microdochium patch and pink snow mold at golf courses in British Columbia, Canada. Isolates nivale from these locations, along with isolates collected Ontario, Canada, were tested their sensitivity to fungicide propiconazole [1-([2-(2,4-dichlorophenyl)-4-propyl-1,3-dioxolan-2-yl]methyl)-1,2,4-triaz...

Strobilurin fungicides produce intensified greening and delayed senescence in plants, and have been claimed to enhance yields of field crops in the absence of disease. To help evaluate this claim, available publicly sponsored tests of fungicides on soft red winter wheat in Virginia and North Carolina (n = 42) were analyzed for the period 1994 to 2010. All tests were replicated and had a randomi...