Fig. 3.

Bistable stochastic expression of egfp and/or echerry from P_inR or P_int in P. knackmussii strain B13. (A) Subpopulation sizes expressing egfp from P_inR (four randomly picked clones with different chromosomal insertion site of the reporter gene fusions) or P_int in stationary phase (76 h) after growth on different carbon substrates. Error bars denote calculated 95% confidence intervals on the subpopulation size. (B) Bistable echerry expression from P_inR preceeds that of egfp from P_int in P. knackmussii cells by ≈ 2 h (see Table 1).