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Recovery from nutrient starvation by a marine Vibrio sp
Applied and Environmental Microbiology
|May 1, 1983
Summary
Marine Vibrio bacteria recover from starvation, showing a standard growth curve. Longer starvation periods lead to deeper dormancy and longer recovery lag phases.
Area of Science:
- Microbiology
- Marine Biology
- Bacterial Physiology
Background:
- Marine psychrophilic Vibrio sp. Ant-300 was studied under starvation conditions.
- Understanding bacterial recovery from starvation is crucial for marine environments.
Purpose of the Study:
- To investigate the recovery process of a marine psychrophilic Vibrio sp. after starvation.
- To monitor changes in cell physiology during recovery.
Main Methods:
- Monitoring optical density, viable cell counts, cell size via electron microscopy, and cellular concentrations of protein, DNA, and RNA.
- Observing the bacterial growth curve during recovery from starvation.
Main Results:
- A typical bacterial growth curve was observed upon nutrient addition.
- Cellular macromolecules (protein, DNA, RNA) peaked before cell division and decreased during the stationary phase.
- Extended starvation periods resulted in longer lag phases and deeper cellular dormancy.
Conclusions:
- Bacterial recovery from starvation is dependent on the duration of the prior starvation period.
- Cells enter a deeper dormant state with prolonged starvation, affecting recovery time.