Les moyens de défense des plantes contre les microorganismes parasites

Abstract

I’lants adopt a variety of biochemical processes to ward ofl fungal and bacterial attacks: I’re-infcctional factors, static contributors present in the plants: antifungal phenolic compounds, proteins that inhibit fungal-secretcd cell wall degrading enzymes, constitutive glucanohvdrolases involved in fungal wall lysis, - - fungistatic lectins. Active mechanisms, which develop in response to a microbial invasion; they are relevant to; general resistance, effective against different microorganisms: iignification, accumulation of hydroxyprolinc-rich glycoproteins, synthesis of phytoalexins… specific resistance, makes the plant resistant to one or some of the races of a pathogen: hypersensitive reaction; - induced resistance, by exposure to other microorganisms immunization. © 1979 Taylor & Francis Group, LLC.