Characterization of the Starvation-Survival Response of Staphylococcus aureus

SP Watson, MO Clements, SJ Foster - Journal of bacteriology, 1998 - Am Soc Microbiol
SP Watson, MO Clements, SJ Foster
Journal of bacteriology, 1998Am Soc Microbiol
The starvation-survival response of Staphylococcus aureus as a result of glucose, amino
acid, phosphate, or multiple-nutrient limitation was investigated. Glucose and multiple-
nutrient limitation resulted in the loss of viability of about 99 to 99.9% of the population within
2 days. The remaining surviving cells developed increased survival potential, remaining
viable for months. Amino acid or phosphate limitation did not lead to the development of a
stable starvation-survival state, and cells became nonculturable within 7 days. For multiple …
Abstract
The starvation-survival response of Staphylococcus aureus as a result of glucose, amino acid, phosphate, or multiple-nutrient limitation was investigated. Glucose and multiple-nutrient limitation resulted in the loss of viability of about 99 to 99.9% of the population within 2 days. The remaining surviving cells developed increased survival potential, remaining viable for months. Amino acid or phosphate limitation did not lead to the development of a stable starvation-survival state, and cells became nonculturable within 7 days. For multiple-nutrient limitation, the development of the starvation-survival state was cell density dependent. Starvation survival was associated with a decrease in cell size and increase in resistance to acid shock and oxidative stress. There was no evidence for the formation of a viable but nonculturable state during starvation as demonstrated by flow cytometry. Long-term survival of cells was dependent on cell wall and protein biosynthesis. Analysis of [35S]methionine incorporation and labelled proteins demonstrated that differential protein synthesis occurred deep into starvation.
American Society for Microbiology