Table 4. Results of RT-qPCR analysis of biofilm forming genes

Strain	Target genes	Expression level compared to untreatment (%)
DH03	gtfB	81%
	luxS	87%
NB08	gtfB	102%
	luxS	71%
NB09	gtfB	79%
	luxS	102%
NB10	gtfB	94%
	luxS	98%