Open AccessInduced Systemic Resistance by Fluorescent Pseudomonas spp.
Author(s) -
Peter A. H. M. Bakker,
Corné M. J. Pieterse,
L.C. van Loon
Publication year - 2007
Publication title -
phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.264
H-Index - 131
eISSN - 1943-7684
pISSN - 0031-949X
DOI - 10.1094/phyto-97-2-0239
Subject(s) - biology , antibiosis , pseudomonas , siderophore , bacteria , microbiology and biotechnology , pathogen , pyoverdine , lytic cycle , genetics , virus
Fluorescent Pseudomonas spp. have been studied for decades for their plant growth-promoting effects through effective suppression of soilborne plant diseases. The modes of action that play a role in disease suppression by these bacteria include siderophore-mediated competition for iron, antibiosis, production of lytic enzymes, and induced systemic resistance (ISR). The involvement of ISR is typically studied in systems in which the Pseudomonas bacteria and the pathogen are inoculated and remain spatially separated on the plant, e.g., the bacteria on the root and the pathogen on the leaf, or by use of split root systems. Since no direct interactions are possible between the two populations, suppression of disease development has to be plant-mediated. In this review, bacterial traits involved in Pseudomonas-mediated ISR will be discussed.