TABLE 1.

Effect of sucrose on growth of Rhodococcus sp. strain X309-10-2 transformed with pKSΔ6-1 or pKSΔ6-1 containing B. subtilis sacB

Strain	×309 growth (CFU) in:
	LB	Selective mediuma
		Without sucrose	Plus 10% sucrose
10-2 (pKSΔ6-1)	>500	>500	>500
10-2 (pKSΔ6-1sac)	326	305	0
10-2 (pKSΔ6-1sac)b	232	236	0

^a LB medium with chloramphenicol (30 μg/ml). (cfu) are from 10 μl of a 10⁻⁴ dilution. 

^b An independent clone.