FIG 2.

Plating efficiencies of Gordonia phages and defense patterns. Ten-fold serial dilutions of the phages indicated on the left were plated onto lawns of G. terrae 3612, a CarolAnn lysogen [3612(CarolAnn)], 3612pMM15, and 3612pMM16 (see Fig. 3). Phage names shown in red correspond to those that have markedly reduced plating efficiencies on the CarolAnn lysogen as well as the pMM15 and pMM16 strains. Phage names in blue correspond to those that plate with reduced efficiencies on the CarolAnn lysogen but not on the pMM15 and pMM16 strains. CarolAnn, shown in green, is subject to repressor-mediated immunity on both the lysogen and pMM15 but not on the pMM16 strain (see Table 1).