TMN was used for screening, culturing, and maintaining microorganisms. This medium contained the following (g/L): 2.0 KH2PO4, 2.0 K2HPO4, 0.4 NH4Cl, 0.2 MgCl2·6H2O, 0.01 FeSO4·7H2O and 8.0 Na2S2O3·5H2O [4]. The medium was autoclaved at 15 psi and 121 °C for 15 min before use. The medium agar was prepared by adding bacto agar (16 g/l) to into TMN broth.