Fig. 4.

V. fischeri that produces C8-HSL prevents phage ARM81ld-driven viral production in coculture with the ΔahyI and WT ARM81 lysogens. Detection of phage ARM81ld obtained from cultures of ΔahyI Aeromonas sp. ARM81 (black bars) or WT Aeromonas sp. ARM81 (white bars) carrying aTc-inducible xre_ARM81ld-luxR_ARM81ld that were grown in coculture with the indicated V. fischeri strains. Relative viral quantity is the amount of phage ARM81ld DNA in a sample compared with the amount of Aeromonas sp. ARM81 host DNA. Data are represented as mean ± SD with n = 3 biological replicates and n = 3 technical replicates. aTc; 0.1 ng mL⁻¹.