Efficiency of plating (EOP) of five bacteriophages (phages) (FJK, FJK.R9-15, FJK.R9-30, MK, and MK.R3-15) for 48 Paer09 strains treated with individual phages (FJK, FJK.R9-15, FJK.R9-30). The EOP is defined as the concentration ratio of a phage on the phage-treated isolate (numerator) and the naive Paer09 strain (denominator; Control). An EOP above 10 was considered as increased efficiency (green), while an EOP of 0.1 to 10 was ranked as unchanged efficiency (grey). A reduced efficiency was defined as an EOP between 0.001 and 0.1 (light blue). When no individual plaques were visible or the EOP was equal to or under 0.001 the isolate was determined resistant to the phage (blue). Mutation-associated protein of each strain with amino acid change in parentheses. A lack of labelling refers to isolates in which no apparent mutation could be identified.
