Problem to be solved: to provide a functional peptide exhibiting antibacterial activity against plant pathogens such as plant pathogenic fungi, pesticides containing the functional peptides, and methods for controlling plant pathogens using the functional peptides.Amino acid sequence: a functional peptide consisting of an amino acid sequence having an amino acid sequence of 85% F H D V W R n Q Q v k k ltltskfgrv kfafg or an amino acid sequence having 85% or more identity relative to the amino acid sequence, or a sequence of amino acid sequences.No selection【課題】植物病原糸状菌等の植物病原菌に対して抗菌活性を示す機能性ペプチド、該機能性ペプチドを含む農薬、及び該機能性ペプチドを用いた植物病原菌の防除方法の提供。【解決手段】アミノ酸配列:MDFHDVWRSNIQDVRKLALETSKCVLMGPSLFGRVKFICFGからなる又は該アミノ酸配列に対して85%以上の同一性を有するアミノ酸配列からなる、若しくは該アミノ酸配列に示した連続する5以上のアミノ酸配列からなる、機能性ペプチド。【選択図】なし