The uptake of organic compounds by heterotrophic bacteria in relation to growth rate = L'uptake de composes organiques par une bactérie hétérotrophe en relation avec le taux de croissance
Sepers, A.B.J. (1982). The uptake of organic compounds by heterotrophic bacteria in relation to growth rate = L'uptake de composes organiques par une bactérie hétérotrophe en relation avec le taux de croissance, in: Deuxième Colloque de Microbiologie Marine, Marseille, 24-25 juin 1981. Publications du Centre National pour l'Exploitation des Océans (CNEXO): Série Actes de colloques, 13: pp. 45, 86-90
In: (1982). Deuxième Colloque de Microbiologie Marine, Marseille, 24-25 juin 1981. Publications du Centre National pour l'Exploitation des Océans (CNEXO): Série Actes de colloques, 13. CNEXO: France. , more
In: Publications du Centre National pour l'Exploitation des Océans (CNEXO): Série Actes de colloques. Centre National pour l'Exploitation des Océans: Paris. ISSN 0335-8259, more
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Document type: Conference paper
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| Abstract |
The adaptation of a psychrophilic, marine Vibrio (Ant-300), previously cultured in rich medium, to short term starvation conditions shows definite morphological changes (particularly a more vibrio-shaped morphology) and flagellum synthesis. Motility and the capacity for positive chemotaxis towards a variety of compounds (amino acids, sugars, alcohols, organic acids) occur concurrently with the morphological changes induced by starvation. Positive chemotaxis is dependent on the duration of the starvation period but motility lasts for many days in the starving cell population. The positive response towards the attractants increases during the first 2-3 days of starvation and falls after this time. Starved cells show better chemotactic responses if they are energized for a short period of time prior to chemotaxis experiments. The data obtained may relate to the ability of the cell to obtain energy in the nutrient-poor system marine environment. |
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