Biocontrol ability of fluorescent pseudomonads genetically dissected: importance of positive feedback regulation.
Root diseases caused by fungal pathogens can be suppressed by certain rhizobacteria that effectively colonize the roots and produce extracellular antifungal compounds. To be effective, biocontrol bacteria need to be present at sufficiently high cell densities. These conditions favor the operation of positive feedback mechanisms that control the production of antifungal compounds in biocontrol strains of fluorescent pseudomonads, via both transcriptional and post-transcriptional mechanisms.
Haas
D
D
Laboratoire de Biologie Microbienne, Université de Lausanne, Lausanne, CH-1015, Switzerland. Dieter.Haas@lbm.unil.ch
Blumer
C
C
Keel
C
C
D000900:Anti-Bacterial Agents / Q000096:biosynthesis; D000935:Antifungal Agents / Q000378:metabolism; D001709:Biotechnology; D005246:Feedback; D005658:Fungi / Q000472:pathogenicity; D005798:Genes, Bacterial; D005818:Genetic Engineering; D005810:Multigene Family; D010935:Plant Diseases / Q000382:microbiology*; D018517:Plant Roots / Q000382:microbiology; D011551:Pseudomonas fluorescens / Q000235:genetics* / Q000502:physiology*; D012988:Soil Microbiology
D000900:Anti-Bacterial Agents; D000935:Antifungal Agents