'PLANT PATHOGEN INFECTION INHIBITOR AND METHOD FOR INHIBITING INFECTION WITH PLANT PATHOGEN'

摘要

A plant pathogen- infection inhibitor, which can prevent plant damage by pathogenic infection by effectively using a plant pathogen-inhibiting mechanism possessed by a plant itself, particularly among certain plants including rice plant and cucumber, and a method thereof, are provided. The plant pathogen infection inhibitor comprises, as the active ingredients, a 5-aminolevulinic acid or a derivative thereof represented by R2R1NCH2COCH2CH2COR3 (1) . wherein R1 and R2 each independently represent hydrogen atom, alkyl group, acyl group, alkoxycarbonyl group, aryl group or aralkyl group; R3 represents hydroxy group, alkoxy group, acyloxy group, alkoxycarbonyloxy group, aryloxy group, aralkyloxy group or amino group), or a salt thereof and a metal, and the method for inhibiting plant pathogen infection utilizes the same.