Table 1.

List of primers used.

Target genes	Primer sequence(5’- 3’)	Approximate band size(bp)	Annealing temperature(°C)	References
E.coli 16S rRNA	F: GACCTCGGTTTAGTTCACAGA R: CACACGCTGACGCTGACCA	585	55	[21]
invA	F: ATCAGTACCAGTCGTCTTATCTTGAT R: TCTGTTTACCGGGCATACCAT	211	58	[22]
st×1	F: ACAATCAGGCGTCGCCAGCGCACTTGCT R: TGTTGCAGGGATCAGTGGTACGGGGATGC	606	58	[23]
st×2	F: CCACATCGGTGTCTGTTATTAACCACACC R: GCAGAACTGCTCTGGATGCATCTCTGGTC	372	58	[23]
rfbO157	F: AAGATTGCGCTGAAGCCTTTG R: CATTGGCATCGTGTGGACAG	497	66	[24]
ereA	F: GCCGGTGCTCATGAACTTGAG R: CGACTCTATTCGATCAGAGGC	419	52	[27]
tetA	F: GGTTCACTCGAACGACGTCA R: CTGTCCGACAAGTTGCATGA	577	57	[28]
tetB	F: CCTCAGCTTCTCAACGCGTG R: GCACCTTGCTGATGACTCTT	634	56	[28]
SHV	F: TCGCCTGTGTATTATCTCCC R: CGCAGATAAATCACCACAATG	768	52	[27]

E. coli=Escherichia coli