光フェントン反応で生成するOHラジカルによるイチゴうどんこ病の防除効果

抄録

The effects of hydroxyl radicals (OH radicals) generated in a solution of hydrogen peroxide, oxalic acid and iron (III) under natural sunlight (“photo-Fenton reaction”) was tested against strawberry powdery mildew [Sphaerotheca aphanis (Wallroth) Braun var. aphanis]. Applications of the OH-radical-generating solution to whole plants before inoculation with a conidial suspension protected plants against the disease. The solution also had a suppressive effect for plants already diseased. Conidial germination was suppressed within 20 min of exposure of the solution in sunlight. These results suggested that OH radicals generated by the photo-Fenton reaction ultimately protected against new disease and suppressed further disease development.