TABLE 3.

Salmonella growth on LB plates

Chelating agent and concn	Growth of serovar Typhimurium ATCC 14028 strainsa
	WT	SA123	SA123(pPznuA)
EDTA
0	+	+	+
0.2 mM	+	+/−	+
0.5 mM	+	−	+
1 mM	+	−	+
2 mM	+	−	+
TPEN
0	+	+	+
0.01 mM	+	+/−	+
0.02 mM	+	+/−	+
0.08 mM	+	−	+
0.15 mM	+/−	−	+/−

^aBacteria were grown overnight in LB medium and then streaked on LB plates containing the indicated amounts of EDTA or TPEN. WT, wild type. Symbols: +, growth; −, no growth; +/−, weak growth.