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Mode of Action
Fungicide Resistance Action Committee Information
Chemical Group: Triazole
Code Group: 3
WSSA Group:
Target Site: C14-demethylation in sterol biosynthesis
Greenbook Comments:
There are great differences in the activity spectra of the different DMI fungicides. Resistance is known in various fungal species. Several resistance mechanisms known incl. Target site mutation Y136F, ABC transporters and others. Generally wise to accept that cross resistance is present between fungicides active against the same fungus. DMI fungicides are Sterol Biosynthesis Inhibitors (SBI's) but show no cross resistance to other SBI classes. Medium risk. See FRAC SBI Guidelines for resistance management.
Other Info:
Action is protective, curative, systemic. Absorbed by roots and leaves; readily translocated to growing tissue. Inhibits synthesis of sterols (SI).
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