Table 2. Main mechanisms controlling mRNA concentrations.

	Compared cultures	Mainly transcriptional control ρD ≤0		Shared control 0<ρD<1		Mainly degradation control ρD ≥1
		Number of genes	Percentage of the total	Number of genes	Percentage of the total	Number of genes	Percentage of the total
Chemostat	0.80 vs. 0.51 h−1	479	98%	4	1%	4	1%
	0.51 vs. 0.11 h−1	454	84%	75	14%	14	3%
Batch	Exponential phase (0.8 h−1) vs. deceleration (0.38 h−1)	452	72%	109	17%	67	11%
	Deceleration (0.38 h−1) vs. stationary (0.04 h−1)	490	77%	66	10%	77	12%

vs. indicates the growth conditions considered for the calculation of the regulation coefficients. Chemostat and batch indicate that RNA half-lives were determined in continuous or discontinuous cultures, respectively. In chemostat cultures, cells were at a steady state, with growth limited by the isoleucine concentrations. In batch cultures, isoleucine in the medium was progressively consumed (until starvation was reached) and the cells were in a dynamic process of adaptation.