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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
Mascher F., Moënne-Loccoz Y., Schnider-Keel U., Keel C., Haas D. and Défago G.
Applied and Environmental Microbiology 68 (4): 2085-2088, 2002
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 CHAO-Rif to maintain cell culturability in soil.
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