The recovery of heat-stressed Escherichia coli in lake water microcosms.
Escherichia coli was heat stressed at 55 degrees, 60 degrees or 65 degrees C in sterile flasks of lake water. After 6 h at these temperatures the viable count on nutrient agar had dropped below the limits of detection (1 colony in 100 ml). The flasks were transferred to a 15 degrees C incubator and left for 7 d. Recovery of the stressed E. coli was shown to occur within 48 h at this temperature. Recovery also occurred in microcosms amended with 5% (v/v) synthetic sewage. The stressed E. coli multiplied in the amended but not in the unamended microcosms.
Lim
C H
CH
Department of Biological Sciences, University of Warwick, Coventry, UK.
Flint
K P
KP
D017753:Ecosystem; D004926:Escherichia coli / Q000254:growth & development*; D005618:Fresh Water; D006358:Hot Temperature; D012722:Sewage; D014871:Water Microbiology
D012722:Sewage