TABLE 2.

Characterization of dynamic changes in microcosms from sequences of dominant PCR amplicons at baseline and following 5 days of exposure to CHXM

Time	DNA amplicon or cell clone	Ambiguity		Closest relative (% sequence similarity)c
		bp	%
Baseline	B1a	170	14	Variovorax paradoxus AY127900 (93)
	B2a	174	14	Uncultured Prevotella sp. strain AJ514233 (100)
	B3a	174	24	Uncultured beta proteobacterium species strain AY144221 (83)
	B4a	177	23	Uncultured alpha proteobacterium species strain AF446310 (89)
	MBRG 8.1b	763	0.4	Prevotella buccae L16478 (99)
	B5a	261	3.8	S. infelix AJ514231 (100)
After CHXM	CHa	181	11.6	C. freundii AJ233408 (87)
	MBRG 8.2b	763	0	C. freundii AF25365 (99)

^aAmplicon derived from DGGE gel. See Fig. 1 for origin of PCR DGGE amplicons.

^bAmplicon derived from isolated cell clones.

^cIdentities based on BLAST database.