Influence of combined abiotic/biotic factors on decay of P. aeruginosa and E. coli in Rhine River water

• DOI: 10.1007/s00253-024-13128-z
• Publication Date: 2024-04-10T10:01:43Z
• Authors: Sha Gao; Nora B. Sutton; Thomas V. Wagner; Huub H. M. Rijnaarts; Paul W. J. J. van...
• Keywords: Biotic component

Understanding the dynamic change in abundance of both fecal and opportunistic waterborne pathogens urban surface water under different abiotic biotic factors helps prediction microbiological quality protection public health during recreational activities, such as swimming. However, a comprehensive understanding interaction among various on pathogen behavior is missing. In this study, effect salinity, light, temperature presence indigenous microbiota, decay/persistence Escherichia coli Pseudomonas aeruginosa Rhine River were tested 7 days incubation with varying salinity (0.4, 5.4, 9.4, 15.4 ppt), light light/dark regime (light/dark) without (dark), (3, 12, 20 °C), presence/absence microbiota. The results demonstrated that significantly impacted decay E. coli. Moreover, significant (p<0.01) four-factor interactive impact these four environmental conditions was observed. for P. aeruginosa, microbiota two determinate or growth. A three-factor between temperature, (p<0.01); (p<0.05) found. Due to effects, caution should be taken when predicting based single condition. addition, response highlights monitoring alone underestimates risks by non-fecal pathogens, aeruginosa. KEY POINTS: Abiotic interactively affect E.coli P.aeruginosa behave given Only an indicator quality.