Fig. 3.

The transposon insertion mutant of Serratia marcescens WW4. The diagram (a) shows the inserted transposon-mediated locus on the chromosome of the mini Tn-5 mutant (SM::mTn-5 80) that was associated with phosphate-limited inhibition. The inserted site (▵) was located upstream of a bacteriocin (CDS SMWW4_v1c20360), which was similar to an S-type pyocin with endonuclease activity. The genomic sequences were sequenced by Illumina sequencing and annotated by blastp in GenBank. The viability of Pseudomonas aeruginosa WW5 co-cultured with S. marcescens WW4 (SM WW4) or SM::mTn-5 80 in BM medium is presented in (b). The data show the means of viable P. aeruginosa WW5 cell numbers (CFU mL⁻¹). The bars indicate the standard error.