2,4-Diacetylphloroglucinol

2,4-Diacetylphloroglucinol or Phl is a natural phenol found in several bacteria:


 * Specific strains of the Gram-negative bacterium Pseudomonas fluorescens. This compound is found to be responsible for the antiphytopathogenic and biocontrol properties in these strains.
 * It is also found in Pseudomonas protegens, where it has the same activity against various plant pathogens.
 * Lysobacter gummosus, a bacterium which lives on the skin of red-backed salamanders.
 * Isolates of Pseudomonas aurantiaca found in Ukraine, living in root symbiosis produce it to control Fusarium oxysporum.