Table 1. PCR primers for the four genes.

Target	pName	Primer (5’-3’)	Product (bps)
ureC	ureC-F	GTATTCGTCGCGAAACCATT	553
	ureC-R	ATATGACGACAGCCCTCCAC
rsmA	rsmA-F	TAGCGAGTGTTGACGAGTGG	562
	rsmA-R	AGCGAGGTGAAGAACGAGAA
hpmA	hpmA-F	CCAGTGAATTAACGGCAGGT	654
	hpmA-R	CGTGCCCAGTAATGGCTAAT
zapA	zapA-F	AACGCAGGTCAGAATGTTCC	553
	zapA-R	TATCTTGTCCACGACCACCA

Column pName lists the names of the primers.