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The effect of temperature on eicosane substrate uptake modes by a marine bacterium Pseudomonas nautica strain 617: relationship with the biochemical content of cells and supernatants

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Abstract

Three hydrocarbon uptake modes (adherence, emulsification and solubilization) were identified and quantified in cells and supernatants of a mesophilic marine bacterium Pseudomonas nautica strain 617 grown on eicosane. The adherence capacity was related to the enrichment of cells with wax esters and glycolipids. The emulsifying activity was related to the presence of extracellular biosurfactants composed of proteins, carbohydrates and lipids (35:63:2). The intensity of substrate uptake modes was sensitive to temperatures currently found in the original environment of P. nautica (16°C, 20°C and 32°C). When temperature decreased, a significant increase in adherence and emulsifying activity was observed in relation to biochemical changes, whereas solubilizing activity decreased. The marine bacterium was able to degrade 53–59% eicosane at the end of exponential growth after 13, 5 and 3 days incubation at 16°C, 20°C and 32°C respectively.

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Authors and Affiliations

  1. Centre d'Oce´anologie de Marseille, URA 41, Campus de Luminy, Case 901, F-13288, Marseille Cedex 9, France

    D.R. Husain, M. Acquaviva, M. Gilewicz & J.-C. Bertrand

  2. Laboratoire de Microbiologie marine, CNRS, UPR 223, Campus de Luminy, Case 907, F-13288, Marseille Cedex 9, France

    M. Goutx

Authors
  1. D.R. Husain
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  2. M. Goutx
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  3. M. Acquaviva
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  4. M. Gilewicz
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  5. J.-C. Bertrand
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Husain, D., Goutx, M., Acquaviva, M. et al. The effect of temperature on eicosane substrate uptake modes by a marine bacterium Pseudomonas nautica strain 617: relationship with the biochemical content of cells and supernatants. World Journal of Microbiology and Biotechnology 13, 587–590 (1997). https://doi.org/10.1023/A:1018581829320

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  • DOI: https://doi.org/10.1023/A:1018581829320

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