4 Experimental results gained from the physiological response of GFP biosensors in scale-down conditions

A series of scale-down experiments have been carried out by our team. During these experiments, different GFP transcriptional reporters have been used in order to characterize the response of microbial cells in front of the environmental fluctuations perceived during the cultures. These transcriptional reporters have been constructed form different natural promoters involving either the general stress response, the response to nutrient limitation or a dependency to the growth rate of the strain. The experimental results are reported in the following section, but it is first useful to specify the cultivation conditions used to carry out these experiments.