Conditions that sustain constant bacterial growth are seldom found in nature. Oligotrophic
environments and competition among microorganisms force bacteria to be able to adapt …

Bacteria are nutritionally starved most of the time and maintain fast growth rates during
availability, surviving prolonged periods of starvation as a result of elaborate physiological …

Microbes from the three domains of life, Bacteria, Archaea, and Eukarya, share the need to
sense and respond to changes in the external and internal concentrations of protons. When …

The σS (RpoS) subunit of RNA polymerase is the master regulator of the general stress
response in Escherichia coli and related bacteria. While rapidly growing cells contain very …

In this study, an assay that combines the ease and simplicity of the qualitative approach for
measuring catalase activity was developed. The assay reagents comprised only hydrogen …

Biofilms constitute the predominant microbial style of life in natural and engineered
ecosystems. Facing harsh environmental conditions, microorganisms accumulate reactive …

The mechanism by which methionine relieves the growth inhibition of Escherichia coli K-12
that is caused by organic weak acid food preservatives was investigated. In the presence of …

Current evidence suggests that a few global regulatory factors mediate many of the
extensive changes in gene expression that occur as Escherichia coli enters the stationary …

Escherichia coli K-12 strains and Shigella flexneri grown to stationary phase can survive
several hours at pH 2 to 3, which is considerably lower than the acid limit for growth (about …

The second vegetative sigma factor sigma S (encoded by the rpoS gene) is the master
regulator in a complex regulatory network that governs the expression of many stationary …