Systemic resistance induced by rhizosphere bacteria

• Published in: Annual review of phytopathology Vol. 36; no. 1; pp. 453 - 483
• Main Authors: Loon, L.C. van (Utrecht University, Utrecht, The Netherlands.), Bakker, P.A.H.M, Pieterse, C.M.J
• Format: Journal Article
• Language: English
• Published: Palo Alto, CA Annual Reviews 01.01.1998; Annual Reviews, Inc
• Subjects: ACIDE JASMONIQUE; ACIDE SALICYLIQUE; ACIDO JASMONICO; ACIDO SALICILICO; AGENT PATHOGENE; BACTERIA; BACTERIOSE; BACTERIOSES; BACTERIOSIS; Biological and medical sciences; BIOLOGICAL CONTROL; BIOLOGICAL DIFFERENCES; CONTROL BIOLOGICO; CONTROL DE ENFERMEDADES; CONTROLE DE MALADIES; DIFERENCIAS BIOLOGICAS; DIFFERENCE BIOLOGIQUE; DISEASE CONTROL; DISEASE RESISTANCE; ENFERMEDADES DE LAS PLANTAS; ENFERMEDADES FUNGOSAS; ETHYLENE; ETILENO; FLORA DEL SUELO; FLORE DU SOL; Fundamental and applied biological sciences. Psychology; FUNGAL DISEASES; Generalities. Disease free stocks; host plants; HOSTS; HOTE; HUESPEDES; INDUCED RESISTANCE; interspecific variation; JASMONIC ACID; LIPOPOLISACARIDOS; LIPOPOLYSACCHARIDE; LIPOPOLYSACCHARIDES; LITERATURE REVIEWS; LUTTE BIOLOGIQUE; MALADIE DES PLANTES; MALADIE FONGIQUE; ORGANISMOS PATOGENOS; PATHOGENICITY; PATHOGENS; PATOGENICIDAD; Phytopathology. Animal pests. Plant and forest protection; PLANT DISEASES; plant diseases and disorders; plant pathogenic bacteria; plant pathogenic fungi; PLANT VIRUSES; POUVOIR PATHOGENE; RECEPTORS; RESISTANCE AUX MALADIES; RESISTANCE INDUITE; RESISTENCIA A LA ENFERMEDAD; RESISTENCIA INDUCIDA; RHIZOSPHERE; RIZOSFERA; salicylic acid; SALICYLIC ACIDS; SIDEROFOROS; SIDEROPHORE; SIDEROPHORES; soil bacteria; SOIL FLORA; SPECIES DIFFERENCES; STRAIN DIFFERENCES; VIRUS DE LAS PLANTAS; VIRUS DES VEGETAUX; Terpenoid; Salicylic acid; Biological control; Ethylene; Host agent relation; Review; Induced resistance; Rhizosphere; Signal transduction; Disease resistance; Sensitivity resistance; Siderophore; Efficiency; Plant growth substance; Bacteria; Phytohormone; Comparative study
• ISSN: 0066-4286; 1545-2107
• DOI: 10.1146/annurev.phyto.36.1.453

▪ Abstract  Nonpathogenic rhizobacteria can induce a systemic resistance in plants that is phenotypically similar to pathogen-induced systemic acquired resistance (SAR). Rhizobacteria-mediated induced systemic resistance (ISR) has been demonstrated against fungi, bacteria, and viruses in Arabidopsis, bean, carnation, cucumber, radish, tobacco, and tomato under conditions in which the inducing bacteria and the challenging pathogen remained spatially separated. Bacterial strains differ in their ability to induce resistance in different plant species, and plants show variation in the expression of ISR upon induction by specific bacterial strains. Bacterial determinants of ISR include lipopolysaccharides, siderophores, and salicylic acid (SA). Whereas some of the rhizobacteria induce resistance through the SA-dependent SAR pathway, others do not and require jasmonic acid and ethylene perception by the plant for ISR to develop. No consistent host plant alterations are associated with the induced state, but upon challenge inoculation, resistance responses are accelerated and enhanced. ISR is effective under field conditions and offers a natural mechanism for biological control of plant disease.