FIG 7.

Competitive advantage conferred by hlyR4. Pairwise competitive growth was tested between strains EPSR and LN39 (a), strains EPS and LN39 (b), and strains EPS and EPSR (c). Three sets of cell suspension were spread on agar plates for colony counting after 2 weeks of cultivation. Colony counting for strain EPSR cells on EPSR-LN39 plates and for strain EPS cells on EPS-LN39 plates was done directly, while EPS cells on EPS-EPSR plates were identified by PCR based on hlyR4. LN39, Haloarcula sp. LN39.