Mycologia (2000) 92, 825-834
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Hydroxyl radical scavengers inhibit lateral-type sclerotial differentiation and growth in phytopathogenic fungi
Mycologia 92, 825-834
Abstract: The effect of certain hydroxyl radical scavengers (dimethyl sulfoxide, p-nitrosodimethylaniline, ethanol, benzoate, salicylate and thiourea) was studied on lateral sclerotial differentiation and growth of S. rolfsii and S. minor. At low growth noninhibiting scavenger concentrations there was a scavenger dose- and reaction rate-correlation with increased sclerotial differentiation delay and inhibition. Higher scavenger concentrations further inhibited sclerotial differentiation and finally arrested growth, providing antioxidant antifungal alternatives to traditional fungicides. Salicylate and p-nitrosodimethylaniline (with the highest hydroxyl radical reaction rates) were the most effective inhibitors of sclerotial differentiation and growth. These data strongly support our theory which suggests that oxygen free radicals are responsible for sclerotial differentiation in fungi.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Christos D. Georgiou
Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution
control - general
Pest and/or beneficial records:
Beneficial | Pest/Disease/Weed | Crop/Product | Country | Quarant.
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Athelia rolfsii | ||||
Sclerotinia minor |