FIG 8.

Interspecies antagonism is mediated by traA allele-specific interactions and Mx alpha. (A) M. fulvus (Mf) and M. xanthus (Mx) strains with the indicated properties (DW1048, DW1614, and DW1615 [left to right]) were mixed at 1:1 ratios, and after 24 h, phase-contrast micrographs were taken (bottom), or after 48 h, stereomicrographs were taken (top). Note that the middle top panel was translucent. Bars, 1 mm (top) and 100 μm (bottom). (B) The relative fitness of the same strain mixtures as described for panel A was determined by dividing the number of CFU from 24 h by the number of CFU from 0 h for each strain.