TABLE 3.

Concentration of VB and virginiamycin produced by two independent ΔbarS1 disruptants and by the wild-type strain in the absence of external VB addition

Strain	Cultivation time and concn of:
	VB (U/ml)				Virginiamycin (μg/ml)
	10 h	13 h	16 h	24 h	10 h	13 h	16 h	24 h
Wild type	<0.2	≥150	≥150	≥150	0	94	92	94
ΔbarSI disruptant no. 1	<0.2	<0.2	<0.2	<0.2	0	0	0	0
ΔbarSI disruptant no. 2	<0.2	<0.2	<0.2	<0.2	0	0	0	0