Table 3. Overview of the expression of transcriptional regulators known to affect biofilm in other Clostridium species.

^a Expression 1 reflects the gene expression of the planktonic cells (no NaCl addition). ^b Expression 2 reflects the gene expression of the biofilm cells (NaCl addition). ^c log2 FC expresses the gene expression of the biofilm versus the planktonic cells. ^d A star marks a q-value (false discovery rate) lower than 0.001. Genes in bold are significantly differentially expressed (q-value < 0.001 and log2 FC <-1 or >1).

Name	Locus tag	Annotation	Expression 1a	Expression 2b	log2 FCc	qd	reference
ccpA	CLJU_c01900	LacI family transcriptional regulator	934	469	-0.99	*	[32]
ctrAB	CLJU_c06150/60	transcriptional regulator	169	114	-0.57		[33]
spo0A	CLJU_c11220	Spo0A-like protein	181	319	0.82	*	[23, 24, 33]
codY	CLJU_c13010	transcriptional repressor CodY	580	488	-0.25		[35]
lexA	CLJU_c21030	LexA repressor	358	101	-1.83	*	[31]
luxS	CLJU_c23480	S-ribosylhomocysteinase	1023	918	-0.16		[23, 34]
-	CLJU_c27530	AgrB-like protein	0	2	0.00		[34]
-	CLJU_c28480	AgrB-like protein	14	9	-0.64		[34]
abrB	CLJU_c41700	AbrB family transcriptional regulator	4	5	0.00		[33]