Figure 6
From: Effect on β-galactosidase synthesis and burden on growth of osmotic stress in Escherichia coli
Growth rate in presence of lactose in the medium: a. specific growth at various concentration of sodium chloride on a glycerol medium (solid line and Open Square) on a glycerol medium with 1 mM lactose (Dashed line and filled square). Dashed line and solid line represents Hill equation fit. The specific growth rate was normalized by the WT growth rate on lactose (0.45 h−1) in a medium having 1 g/L glycerol and 1 mM of lactose in absence of salt. b. Lag phase observed for growth on media containing glycerol with and without 1 mM of lactose. Description of data points as in (a). c. Burden due to the presence of lactose alone (фL) at various salt concentration. Note that below 0.6 M salt concentration, burden is negative indicating benefit for cells due to the presence of lactose.