Influence of aquatic microorganisms on Legionella pneumophila survival.
The ability of aquatic bacteria Pseudomonas fluorescens SSD (Ps-D) and Pseudomonas putida SSC (Ps-C) to support the persistence of Legionella pneumophila (Lp-1) in an artificial water microcosm was investigated for 42 day, at two different incubation temperatures. At 4 degrees C, individually suspended Lp-1 was no longer detectable just after 24 hours, while in co-cultures with Pseudomonas, Lp1 showed a better survival capability. At 30 degrees C, Lp-1 alone displayed high survival rates over the entire period of observation. When Lp-1 was inoculated with Ps-C and Ps-D, its count showed a marked decrease, followed by a gradual and costant decline.
Guerrieri
Elisa
E
Department of Biomedical Sciences, University of Modena and Reggio Emilia, Modena, Italy.
Bondi
Moreno
M
Borella
Paola
P
Messi
Patrizia
P
D015169:Colony Count, Microbial; D016952:Legionella pneumophila / Q000254:growth & development*; D011549:Pseudomonas / Q000502:physiology*; D013696:Temperature; D014871:Water Microbiology