TABLE 1.

Geographical and ecological origins and doubling time of isolates and closely matched species by 16S rRNA sequence

Substrate	Strain	Ecological and geographical source	Doubling time (h)a	Closely matched species	% Similarityb
2-Fluorobenzoate	2FB1	Agricultural soil, Wyo.	20	Pseudomonas oleovorans	99.7
	2FB2	Estuarine sediment, Arthur Kill, N.J.	21	Azoarcus tolulyticus	99.8
	2FB3	Pond sediment, Passion Puddle, N.J.	26	Bradyrhizobium elkanii	98.2
	2FB4	River sediment, Kyungan, Korea	NDc	Acidovorax avenae	96.7
	2FB5	River sediment, Kyungan, Korea	11	Acidovorax avenae	95.0
	2FB6	Agricultural soil, Wyo.	15	Azoarcus tolulyticus	99.6
	2FB7	River sediment, Kyungan, Korea	21	Acidovorax avenae	95.4
	2FB8	River sediment, Kyungan, Korea	ND	Ensifer adhaerens	97.4
	2FB9	Agricultural soil, Viikki, Finland	ND	Pseudomonas stutzeri	97.0
	2FB10	Agricultural soil, Viikki, Finland	ND	Ochrobactrum anthropi	99.2
	2FB11	Estuarine sediment, Shihwa, Korea	ND	Pseudomonas stutzeri	97.9
4-Fluorobenzoate	4FB1	Estuarine sediment, Arthur Kill, N.J.	58	Thauera aromatica	99.3
	4FB2	Estuarine sediment, Arthur Kill, N.J.	35	Thauera aromatica	99.3
	4FB3	Estuarine sediment, Arthur Kill, N.J.	151	Pseudomonas stutzeri	99.0
	4FB4	Agricultural soil, Wyo.	95	Pseudomonas stutzeri	99.7
	4FB5	Agricultural soil, Wyo.	18	Pseudomonas stutzeri	99.7
	4FB6	Agricultural soil, Wyo.	58	Ensifer adhaerens	99.3
	4FB7	Estuarine sediment, Arthur Kill, N.J.	51	Pseudomonas stutzeri	98.4
	4FB8	Pond sediment, Passion Puddle, N.J.	ND	Paracoccus denitrificans	100.0
	4FB9	Pond sediment, Passion Puddle, N.J.	ND	Ochrobactrum anthropi	99.2
	4FB10	Estuarine sediment, Shihwa, Korea	36	Azoarcus tolulyticus	99.9
	4FB11	Marine sediment, Hopewell Rock, Canada	114	Mesorhizobium loti	96.9
	4FB12	River sediment, Anyang, Korea	ND	Ochrobactrum anthropi	98.9
	4FB13	Agricultural soil, Viikki, Finland	ND	Ochrobactrum anthropi	96.8
	4FB14	River sediment, Kyungan, Korea	ND	Ochrobactrum anthropi	98.9
3-Chlorobenzoate	3CB2	Estuarine sediment, Arthur Kill, N.J.	34	Thauera aromatica	99.3
	3CB3	Agricultural soil, Wyo.	37	Thauera aromatica	98.9
	3CB4	Estuarine sediment, Arthur Kill, N.J.	133	Ochrobactrum anthropi	99.2
	3CB5	Agricultural soil, Wyo.	131	Ochrobactrum anthropi	99.2
	3CB6	Estuarine sediment, Shihwa, Korea	117	Pseudomonas stutzeri	97.5
	3CB7	River sediment, Kyungan, Korea	147	Pseudomonas stutzeri	97.9
3-Bromobenzoate	3BB1	Agricultural soil, Wyo.	20	Thauera aromatica	98.9
	3BB2	Estuarine sediment, Arthur Kill, N.J.	38	Pseudomonas stutzeri	98.9

^aDoubling time was measured for growth on halobenzoates under denitrifying conditions. 

^bThe sequence similarities were measured with 600 bp of 16S rRNA gene sequences and compared with the type strains of each species by using the olddistance program in the GCG package. 

^cND, not determined.