The application discloses application of 5,8,11-eicosatrienoic acid in prevention and treatment of
plant fungal diseases and belongs to the field of
pesticide chemistry. The 5,8,11-eicosatrienoic acid mainly prevents and treats diseases caused by the
oomycete class capsicum
phytophthora, the compound is a long-chain
unsaturated fatty acid, has an
antifungal disease effect and can be used as a
fungicide to prevent and treat
plant diseases. The compound can effectively prevent
pathogenic bacteria from invading plants by inhibiting
mycelium growth, enhancing
cell membrane permeability and interfering with the
spore sac release process, and is further used for preventing and treating huge
plant fungal diseases. Biological tests show that the compound has a significant concentration-dependent
inhibitory effect on the
mycelium growth of the capsicum
phytophthora, and the half effective inhibitory concentration (EC50) is 60.2 µg / mL. At a concentration of 200 µg / mL, the inhibition rate is more than 83%, the 5,8,11-eicosatrienoic acid can effectively inhibit the release of the capsicum
phytophthora spore sac, and the EC50 is 156.3 µg / mL. At a concentration of 200 µg / mL, the inhibition rate is morethan 77%.