TABLE 1.

Electron donors and acceptors used by strain TCE1 and by some phylogenetically related Desulfitobacterium species and a related strain in batch cultures^a

Electron donor or electron acceptor	Utilization by:
	Desulfito-bacterium sp. strain TCE1	D. dehalogenans	D. hafniense	Desulfito-bacterium sp. strain PCE1
Electron donors used with sulfite as the acceptor
H2b	+	+	−	−
Formateb	+	+	+	+
Lactate	+	+	+	+
Pyruvatec	+	+	+	+
Butyrate	+	+	+	+
Crotonate	+	−	+	+
Ethanol	+	+	+	+
Serinec	+	−	+	+
Electron acceptors used with lactate as the donor
PCE	+	−	−	+
TCE	+	−	−	−
3-Cl-4OH-PA	−	+	+	+
Nitrate	+	+	+	−
Sulfite	+	+	+	+
Thiosulfate	+	NDd	ND	+
Fumarate	+	+	+	+
Fe(III)-EDTA	−	ND	ND	−

^aSubstrates were tested at concentrations of 10 to 50 mM. Growth was judged by examining optical density at 660 nm and acetate or sulfide production. 

^bAcetate (5 mM) was added as a carbon source. 

^cThe substrate was also used fermentatively. 

^dND, not determined.