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Table 1 Mutation rates and frequencies under different conditions in E. coli ATCC 31343

From: Occurrence of leu+ revertants under starvation cultures in Escherichia coli is growth-dependent

Media Time Mutations Viable cells Mutation rates Mutation frequencies
LB 1 day leu + 1.31 × 109 1.91 × 10-10 2.65 × 10-9
LB 1 day pro + 1.24 × 109 1.41 × 10-10 6.57 × 10-9
LB 1 day lac + 1.26 × 109 2.45 × 10-10 9.86 × 10-9
MM+P 1 day leu + 7.56 × 107 5.73 × 10-9 3.02 × 10-7
MM+L 1 day pro + 4.89 × 107 3.07 × 10-9 2.78 × 10-7
CM(Lac) 1 day lac + 8.34 × 107 3.60 × 10-9 2.90 × 10-7
MM+P 3 days leu + 2.13 × 107 1.72 × 10-8 1.11 × 10-6
MM+L 3 days pro + 1.09 × 107 4.06 × 10-8 1.79 × 10-6
CM(Lac) 3 days lac + 3.61 × 107 1.47 × 10-8 1.18 × 10-6
  1. The initial number of cells in the cultures were all 1.08 × 108 cells/ml.