Uses
Pyoluteorin is a small chlorinated pyrrol produced by several species of Pseudomonas, first reported in 1958. Pyoluteorin exhibits a broad bioprofile, demonstrating antibiotic, antifungal and herbicidal activity. More recently, pyoluteorin has been investigated as bio-pesticide and has been shown to modulate the levels of metabolites in Pseudomonas.
Definition
ChEBI: Pyoluteorin is a member of the class of resorcinols that is resorcinol in which the hydrogen at position 2 is replaced by a 4,5-dichloro-1H-pyrrole-2-carbonyl group. It is a natural product found in Pseudomonas fluorescens which exhibits antibacterial properties and is a strong inducer of caspase-3-dependent apoptosis. It has a role as a bacterial metabolite, an apoptosis inducer, an antifungal agent, a marine metabolite and an antibacterial agent. It is a member of resorcinols, a member of pyrroles, an organochlorine compound, a diol, a beta-hydroxy ketone, a polyketide, an aromatic ketone and an organochlorine pesticide.
Biological Activity
pyoluteorin is a secondary metabolite produced by the biological control organism pseudomonas fluorescens pf-5, a rhizosphere bacterium. pyoluteorin shows no toxicity to seed- and root-rotting plant pathogens. pyoluteorin production is influenced by positive autoregulation. addition of pyoluteorin to liquid cultures of pf-5 enhanced pyoluteorin production.pyoluteorin functions as a signal molecule negatively regulating additional secondary metabolites produced by pseudomonas [1]. the pyoluteorin contributes to the biological control of soilborne plant diseases by some strains of pseudomonas fluorescens, including pf-5. pyoluteorin induces its own productionand represses the other’s production [2]. depending on the plant, pyoluteorin production plays an important role in the suppression of damping-off by strain cha0 without being a major mechanism in disease suppression [3].
Safety Profile
A poison by ingestion and intraperitoneal routes. A flammable liquid. When heated to decomposition it emits toxic vapors of NOx and Cl-.
References
[1] brodhagen m, henkels m d, loper j e. positive autoregulation and signaling properties of pyoluteorin, an antibiotic produced by the biological control organism pseudomonas fluorescens pf-5[j]. applied and environmental microbiology, 2004, 70(3): 1758-1766.
[2] kidarsa t a, goebel n c, zabriskie t m, et al. phloroglucinol mediates cross‐talk between the pyoluteorin and 2, 4‐diacetylphloroglucinol biosynthetic pathways in pseudomonas fluorescens pf‐5[j]. molecular microbiology, 2011, 81(2): 395-414.
[3] maurhofer m, keel c, haas d, et al. pyoluteorin production bypseudomonas fluorescens strain cha0 is involved in the suppression ofpythium damping-off of cress but not of cucumber[j]. european journal of plant pathology, 1994, 100(3): 221-232.
