TABLE 3.

Oxygen uptake rates of selected benzene-degrading isolates

Isolate name	ARDRA type	Phenotypea	Genotype					Oxygen uptake rate (μmol of O2 min−1) withb:
			C23O subfamily I.2.A	ISPα	xylMc	tbmDc	tmoAc	Benzene	Toluene	Phenol	DHDd
1YdBTEX2	PS1	BT	+	A	+	+	−	5 ± 1	14 ± 4	<1	90 ± 15
1XB2	PS1	BT	+	A	+	−	−	4 ± 1	8 ± 2	<1	65 ± 10
3YC3	AR	B	−	B	ND	ND	ND	15 ± 3	<1	<1	35 ± 5
1YB2	PS1	B	+	C	+	+	+	4 ± 1	<1	<1	35 ± 5
3YdBTEX1b	PS2	B	+	C	+	−	−	4 ± 1	<1	<1	50 ± 10

^aBT, benzene and toluene degradation; B, benzene degradation.

^bOxygen uptake rates were determined with whole cells grown on benzene and are expressed as the rate of O₂ uptake measured polarographically using cell densities (A₅₄₆) of 1. Rates given are means of three independent determinations.

^cPCR result was reported by Hendrickx et al. (34). ND, not determined.

^dDHD, benzene cis-dihydrodiol.