Table 2.

Growth parameters of different P aeruginosa mutants on various substrates

Carbon source(s)	Growth of mutanta
	NH1 [ercA (PA1991)::Kmr], Fe-ADH gene inactivated		NH2 [ercA (PA1991)::Kmr ΔercS (PA1992)::Gmr], Fe-ADH and SK genes inactivated		NH3 [PA2572::Kmr], RR gene inactivated		NH5 [PA5186::Kmr], Fe-ADH gene inactivated
	Gen	Lag	Gen	Lag	Gen	Lag	Gen	Lag
Ethanol, 1-propanol	wt	≫	wt	≫	wt	wt	wt	wt
1-Butanol	≫	wt	≫	wt	ND	ND	wt	wt
1,2-Propanediol	wt	≫	wt	≫	ND	ND	wt	wt
1,3-Propanediol	NG	NG	NG	NG	ND	ND	wt	wt
Acetate	wt	wt	wt	wt	wt	wt	wt	wt
Glucose	wt	wt	wt	wt	ND	ND	Wt	wt
Succinate	wt	wt	wt	wt	wt	wt	Wt	wt

^aGen, generation time; Lag, lag phase; SK, two-component regulatory system sensor kinase; RR, response regulator; wt, response similar to wild type; ≫, generation time or lag phase greater than 5 times the wild-type value; NG, no growth for at least 72 h; ND, not determined. Judgments of differences in generation times and lag phases were based on means ± standard deviations from at least three independent experiments.