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  • Title: Inactivation of the regulatory gene algU or gacA can affect the ability of biocontrol Pseudomonas fluorescens CHA0 to persist as culturable cells in nonsterile soil.
    Author: Mascher F, Moënne-Loccoz Y, Schnider-Keel U, Keel C, Haas D, Défago G.
    Journal: Appl Environ Microbiol; 2002 Apr; 68(4):2085-8. PubMed ID: 11916739.
    Abstract:
    Rifampin-resistant Pseudomonas fluorescens CHA0-Rif and mutants in which the regulatory gene algU (encoding sigma factor sigma(E)) or gacA (encoding a global regulator of secondary metabolism) was inactivated were compared for persistence in three nonsterile soils. Functional algU and (particularly) gacA were needed for CHA0-Rif to maintain cell culturability in soil.
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