Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 15 of 15 for “"Vibrio alginolyticus"”.
-
Regulation of nitrogen metabolism in vibrio alginolyticus
Aerated cultures of Vibrio alginolyticus produced histidase at 30°C but production of histidase was repressed by either incubation at 37°C or a lack of oxygen. A similar regulation system by temperature and oxygen has been reported for collagenase and prntease production by V. alginolyticus (Hare …
-
Genetic and biochemical studies of Vibrio alginolyticus glutamine synthetase
A genomic library of the collagenolytic Vibrio alginolyticus strain was established in Escherichia coli HB101 employing the positive selection vector pEcoR251. A glutamine synthetase (GS) gene, glnA was identified by complementation of the glnA deletion in E. coli ET8051 glnA, glnL, glnG deletion …
-
Studies on the regulation of extracellular collagenase production by vibrio alginolyticus
Vibrio alginolyticus synthesized extracellular collagenase in a highly aerated peptone medium at the late-exponential and early-stationary phases of growth. Collagenase synthesis was subject to end-product repression and was repressed by various amino acids and ammonium ions. Glutamine caused …
-
Molecular biology studies on the extracellular serine proteases of Vibrio alginolyticus
Vibrio alginolyticus is a gram-negative aerobic bacterium that produces several extracellular serine proteases and a collagenase during the stationary growth phase. The aim of this study was to investigate alkaline serine protease production by this organism, and to attempt the cloning and …
-
Characterization and regulation of serine exoproteases and collagenase in vibrio alginolyticus
… collagenase and serine proteases by Vibrio alginolyticus during stationary phase was inhibited by a temperature shift from 30 to 37°C and by lack of oxygen. V. alginolyticus had identical growth rates at 30 and 37°C. Aeration did not affect the growth rate of stationary phase cells …
-
Studies on the Vibrio alginolyticus sucrose utilization system cloned into Escherichia coli
… halotolerant, gram-negative organism Vibrio alginolyticus. The cloning, expression and regulation of the v. alginolyticus sucrose utilization system in Escherichia coli is discussed and the results of a molecular analysis of the sucrase gene (scrA) are presented. The clone pVSlOO, …
-
Molecular analysis of the Vibrio alginolyticus sucrose utilization system cloned into Escherichia coli
… halotolerant, Gram-negative bacterium Vibrio alginolyticus. The V. alginolyticus sucrose utilization system originally cloned into Escherichia coli on plasmid pVS100 involves a sucrase enzyme (gene scrB), and a sucrose uptake system. Synthesis of the sucrase and sucrose uptake system in …
-
A Genetic and Physiological Study of the Role of Extracellular Copper-Binding Proteins in Copper Detoxification by the Marine Bacterium <i>Vibrio alginolyticus</i>
<p>Supernatant proteins in <em>Vibrio alginolyticus</em> batch cultures were analyzed by SDS-PAGE before copper was added, 24 and 48 hours after the addition of copper, and in 24 hour control (no Cu) cultures. Two proteins, one 21 kilodalton (kDa) and one 19 kDa, were found to be copper-induced, …
-
Dynamics of semi-flexible fibres in viscous flow
… rigid and semi-flexible fibres. Bacteria such as Vibrio alginolyticus and Escherichia coli swim by rotating one or more helical flagella. Vibrio alginolyticus has only one flagella and changes direction by altering its sense of rotation. Experimental observations of Vibrio alginolyticus have found …
-
Investigation of viscosity effects on bacteria collective motion using particle image velocimetry
… patterns and behavior of Escherichia coli and Vibrio alginolyticus. Firstly, various PIV post-processing tools are examined; next, different PIV conditions are tested and post-processing methods are optimized to best visualize bacteria collective motion; finally, the influence of viscosity …
-
Exploring the optimality of various bacterial motility strategies : a stochastic hybrid systems approach
… strategy of the marine bacterium Vibrio alginolyticus. We use stochastic stability theory to analyze the chemotaxis models in terms of their stationary distributions and also derive a diffusion approximation of the system that provides further insight into the performance of …
-
Biogenic Amine Analysis of Fresh and Stored Bluefish (Pomatomus Saltatrix) and Microbiological Survey of Histamine-Forming Bacte
… One isolate each of Klebsiella ozaenae and Vibrio alginolyticus, and two isolates of Aeromonas sp. were found in the processing facilities. The study concluded that histamine-forming bacteria do not make up a large part of the microflora associated with fish-processing facilities. Fishing …
-
Wirkung des Ballastwasser-Biozids Acrolein auf verschiedene pathogene Bakterienstämme in Meer-, Brack- und Süßwasser
… Pseudomonas aeruginosa, Aeromonas hydrophila, Vibrio parahaemolyticus, Vibrio alginolyticus und zwei Stämme Vibrio vulnificus. Basierend auf der ScanMIC-Methode (Rahman et al, 2003) wurden Mikrotiterplatten mit Bakterienflüssigkultur, Acrolein und Probenwasser unterschiedlichen Salzgehaltes …
-
Physical ecology of marine microbes
… motility adaptation in the marine bacterium Vibrio alginolyticus using high-speed imaging. We found that marine bacteria can exploit a buckling instability of their flagellum to change direction during swimming, achieving the same functionality as multi-flagellated cells, but with the cost of …
-
Molecular characterisation of the vibrio midae SY9 extra cellular alkaline serine protease and its role in the previously observed probiotic effect on the growth of Haliotis midae
… ABFEED(R) S34, supplemented with the bacterium Vibrio midae SY9 have enhanced digestion, growth and immune responses. Probiotic microorganisms are thought to function in a variety of ways, which include the secretion of extracellular enzymes that may enhance digestion in the host organism. …