TY - JOUR
T1 - Influence of temperature, salinity and pH on the growth of environmental Aeromonas and Vibrio species isolated from Mai Po and the Inner Deep Bay Nature Reserve Ramsar Site of Hong Kong
AU - Wang, Yanling
AU - Gu, Ji Dong
PY - 2005
Y1 - 2005
N2 - Four environmental bacterial isolates including Aeromonas hydrophila MP-3, A. salmonicida MP-4, Vibrio vulnificus MP-2 and V. cholerae MP-1 isolated from sediment and water of Mai Po Nature Reserve of Hong Kong were examined for their responses to temperature, pH and salinity under laboratory conditions in this study. V. cholerae MP-1 was found to resist vibriostatic agent O/129 at concentration of 10 μg/ml. In addition, bacterial growth under test conditions was measured and the results were fitted into the Gompertz model to obtain important parameters related to bacterial growth, lag time (λ), specific growth rate (μm), and maximum biomass (A) for comparison. V. cholerae MP-1 did not show any apparent growth at 15°C, but was adapted to a much wider environmental pH from 5.2 to 9.2 for growth while V. vulnificus MP-2 was more sensitive to pH changes yielding the highest biomass at pH 6.2. A. salmonicida MP-4 was surprisingly tolerant to salinity as high as 60.0‰ NaCl and grew almost equally well as under conditions of other treatments. All four bacterial isolates showed a wide spectrum of plasticity to the environmental conditions and they pose a potential threat to public health and animal health.
AB - Four environmental bacterial isolates including Aeromonas hydrophila MP-3, A. salmonicida MP-4, Vibrio vulnificus MP-2 and V. cholerae MP-1 isolated from sediment and water of Mai Po Nature Reserve of Hong Kong were examined for their responses to temperature, pH and salinity under laboratory conditions in this study. V. cholerae MP-1 was found to resist vibriostatic agent O/129 at concentration of 10 μg/ml. In addition, bacterial growth under test conditions was measured and the results were fitted into the Gompertz model to obtain important parameters related to bacterial growth, lag time (λ), specific growth rate (μm), and maximum biomass (A) for comparison. V. cholerae MP-1 did not show any apparent growth at 15°C, but was adapted to a much wider environmental pH from 5.2 to 9.2 for growth while V. vulnificus MP-2 was more sensitive to pH changes yielding the highest biomass at pH 6.2. A. salmonicida MP-4 was surprisingly tolerant to salinity as high as 60.0‰ NaCl and grew almost equally well as under conditions of other treatments. All four bacterial isolates showed a wide spectrum of plasticity to the environmental conditions and they pose a potential threat to public health and animal health.
UR - http://www.scopus.com/inward/record.url?scp=15244344611&partnerID=8YFLogxK
U2 - 10.1002/jobm.200410446
DO - 10.1002/jobm.200410446
M3 - 文章
C2 - 15678554
AN - SCOPUS:15244344611
SN - 0233-111X
VL - 45
SP - 83
EP - 93
JO - Journal of Basic Microbiology
JF - Journal of Basic Microbiology
IS - 1
ER -
