Evolution of thermal dependence of growth rate of Escherichia coli populations during 20,000 generations in a constant environment.

Abstract excerpt

Twelve experimental populations of the bacterium Escherichia coli evolved for 20,000 generations in a defined medium at 37 degrees C. We measured their maximum growth rates across a broad range of temperatures and at several evolutionary time points to quantify the extent to which they became thermal specialists with diminished performance at other temperatures. We also sought to determine whether antagonistic...

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