Dimethomorph

Description

Dimethomorph is a morpholine fungicide that inhibits fungal cell wall formation. It inhibits mycelial growth of the oomycete fungi P. citrophthora, P. parasitica, P. capsici, and P. infestans (EC₅₀s = 0.14, 0.38, <0.1, and 0.16-0.3 μg/ml, respectively) but is less active against the green algae species C. vulgaris or S. obliquus in vitro (EC₅₀s = 47.46 and 44.87 μg/ml, respectively). It inhibits androgen receptor (AR) activity in a reporter assay in MDA-kb2 human breast cancer cells but not in a yeast antiandrogen screen (IC₂₀s = 0.263 and 38.5 μM, respectively). It is not toxic to rats (LD₅₀ = 3,900 mg/kg) or goldfish (C. auratus; LC₅₀ = >32 μg/ml).

The Uses of Dimethomorph

Dimethomorph is a systemic fungicide which exhibits protectant, curative and antisporulant activities. It is active against fungal diseases such as leaf blight, downy mildew, damping off and foot-rot caused by Phytophthora spp. in/on grapes, potatoes and tomatoes.