TABLE 3.

Differential expression of pel genes under various growth conditions

Gene name	Fold change compared to the ΔslyA mutanta
	M63 glycerol minimal medium	M63 glycerol minimal medium + 0.4% PGA	M63 glycerol minimal medium + 0.4% PGA + 1% potato tuber extract
pelA	0.9 ± 0.2	12.8 ± 1.3	16.5 ± 2.7
pelB	0.4 ± 0.03	0.7 ± 0.04	3.3 ± 0.7
pelC	0.6 ± 0.06	0.7 ± 0.04	2.9 ± 0.8
pelD	0.9 ± 0.08	13.5 ± 1.4	1052.7 ± 94
pelE	0.5 ± 0.02	1.3 ± 0.09	9.7 ± 0.9
pelI	0.6 ± 0.02	11.9 ± 1.8	1031.3 ± 83
pelL	0.3 ± 0.06	42.8 ± 3.3	826.7 ± 79
pelZ	0.56 ± 0.1	4.9 ± 0.7	14.3 ± 3.6

^aExpressed as the ratio of the specific gene expression level in the wild type compared to that in the ΔslyA mutant normalized to the level of expression of the 16S rRNA gene.