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Describes the purification and some properties of novel antimicrobial peptides (AMP) from Fagopyrum esculentum, which have a potent and wide antimicrobial activity against various pathogens. Methods used for purification; Concentration of peptides required for 50 percent inhibition of the growth of plant pathogenic fungi and Gram-positive and -negative bacteria.

Investigates the amino acid sequence and antimicrobial activity of chitin-binding peptides, Pp-AMP 1 and Pp-AMP 2, from Japanese bamboo shoots (Phyllostachys pubescens). Structural features of the chitin-binding peptides; High degree of homology shown by the peptides to mistletoe toxins.

Describes the purification and properties of two novel chitin-binding antimicrobial peptides from Tulipa gesneriana L. using chitin affinity chromatography. Characteristic properties of antimicrobial peptides; Antimicrobial activity of these two antimicrobial peptides against various pathogenic microorganisms; Function of antimicrobial peptides as self-defense against infection by various harmful pathogens.