Figure 2.

Plasmid copy number of plasmid pLd1 of chemostat grown cells cultivated at a constant growth rate (0.135 h−1) at different pH values, in the presence (+) or absence (−) of citrate and under lactose or amino acid limitation. The single‐copy genes citP and glyA were targeted during qPCR to quantify plasmid and chromosomal copies respectively.