NOVEL METHODS OF PROTECTING PLANTS FROM PATHOGENS

摘要

This invention provides novel methods for improving plant quality and yield in the presence of pathogens. The method increases the levels of pathogenesis- related proteins, such as PR1, phenylalanine ammonia lyase, or plant cell wa ll proteins such as hydroxyproline-rich glycoproteins, in a plant by contacting the plant with a plant systemic inducer and a reactive oxygen species wherei n the amount of the reactive oxygen species is sufficient to increase the amou nt of the pathogenesis-related protein above the level induced by the plant systemic inducer in the absence of the reactive oxygen species. A preferred reactive oxygen species is peracetic acid; a preferred plant systemic induce r is salicylic acid.