{"entity": "researcher", "timestamp": "2026-07-20T21:53:26.873Z", "family": "Paul", "given": "Catherine J", "initials": "CJ", "orcid": "0000-0003-0323-8359", "affiliations": ["Applied Microbiology, Department of Chemistry, Lund University, PO Box 124, SE-221 00 Lund, Sweden.", "Water Resources Engineering, Department of Building and Environmental Technology, Lund University, PO Box 118, SE-221 00 Lund, Sweden."], "links": {"self": {"href": "https://publications.scilifelab.se/researcher/0c169e96b18c403b9c18228126e6fd8d.json"}, "display": {"href": "https://publications.scilifelab.se/researcher/0c169e96b18c403b9c18228126e6fd8d"}}, "publications": [{"entity": "publication", "iuid": "9cffa610a5254003956c5dedb591e1d0", "links": {"self": {"href": "https://publications.scilifelab.se/publication/9cffa610a5254003956c5dedb591e1d0.json"}, "display": {"href": "https://publications.scilifelab.se/publication/9cffa610a5254003956c5dedb591e1d0"}}, "title": "Microbial communities in slow sand filters for drinking water treatment adapt to organic matter altered by ozonation.", "authors": [{"family": "Rosenqvist", "given": "Tage", "initials": "T"}, {"family": "Hilding", "given": "Johanna", "initials": "J"}, {"family": "Suarez", "given": "Carolina", "initials": "C", "orcid": "0000-0001-5988-4048", "researcher": {"href": "https://publications.scilifelab.se/researcher/86cadb16f7cf45eca8030af1a8ae860e.json"}}, {"family": "Paul", "given": "Catherine J", "initials": "CJ", "orcid": "0000-0003-0323-8359", "researcher": {"href": "https://publications.scilifelab.se/researcher/0c169e96b18c403b9c18228126e6fd8d.json"}}], "type": "journal article", "published": "2025-02-15", "journal": {"title": "Water Res.", "issn": "1879-2448", "issn-l": "0043-1354", "volume": "270", "issue": null, "pages": "122843"}, "abstract": "Changing natural organic matter quality from anthropogenic activity and stricter requirements for micropollutant removal challenges existing systems for drinking water production. Ozonation of water followed by biofiltration, such as passage through a slow sand filter (SSF), is a partial solution. Biofiltration relies on biofilms (microbial communities within extracellular matrices). However, the effects of ozonation on SSF microbial communities are unknown. In this study, genome-resolved and read-based metagenomics were used to compare the microbial communities of two full-scale SSFs employing conventional pre-treatment to a 20 m2 SSF operated in parallel with ozonation as additional pre-treatment. The SSF microbial community receiving ozonated water was less diverse than those receiving non-ozonated water. Families Hyphomicrobiaceae, Acetobacteraceae, Sphingomonadaceae and Burkholderiaceae were more abundant when ozone was used, as were genes for metabolism of single-carbon organic compounds. Conversely, genes for metabolism of aromatic compounds and fatty acids were less abundant. Metagenome assembled genomes associated with the non-ozonated SSFs were enriched with several glycoside hydrolases, while those associated with the ozonated SSF were enriched with genes for 1-2 carbon compound metabolism. No indications of increased microbial risk (pathogens or antibiotic resistance genes) were detected as a consequence of ozonation. This study shows how microbial communities of SSFs adapt to changes in organic matter quality, highlighting the key role of biofilters for production of safe and sustainable drinking water in a changing climate.", "doi": "10.1016/j.watres.2024.122843", "pmid": "39612821", "labels": {"Bioinformatics Support for Computational Resources": "Service", "NGI Short read": "Service", "National Genomics Infrastructure": "Service", "NGI Stockholm (Genomics Production)": "Service"}, "xrefs": [{"db": "pii", "key": "S0043-1354(24)01742-1"}], "notes": [], "created": "2025-02-28T14:13:29.572Z", "modified": "2025-05-27T08:38:18.414Z"}, {"entity": "publication", "iuid": "ce2c101b270548fc993956b20c5093b3", "links": {"self": {"href": "https://publications.scilifelab.se/publication/ce2c101b270548fc993956b20c5093b3.json"}, "display": {"href": "https://publications.scilifelab.se/publication/ce2c101b270548fc993956b20c5093b3"}}, "title": "Escherichia coli in urban marine sediments: interpreting virulence, biofilm formation, halotolerance, and antibiotic resistance to infer contamination or naturalization.", "authors": [{"family": "Erb", "given": "Isabel K", "initials": "IK"}, {"family": "Suarez", "given": "Carolina", "initials": "C"}, {"family": "Frank", "given": "Ellinor M", "initials": "EM"}, {"family": "Bengtsson-Palme", "given": "Johan", "initials": "J", "orcid": "0000-0002-6528-3158", "researcher": {"href": "https://publications.scilifelab.se/researcher/267ff77d11e04a30bacdd0ae7492bea8.json"}}, {"family": "Lindberg", "given": "Elisabet", "initials": "E"}, {"family": "Paul", "given": "Catherine J", "initials": "CJ", "orcid": "0000-0003-0323-8359", "researcher": {"href": "https://publications.scilifelab.se/researcher/0c169e96b18c403b9c18228126e6fd8d.json"}}], "type": "journal article", "published": "2024-08-14", "journal": {"title": "FEMS Microbes", "issn": "2633-6685", "volume": "5", "pages": "xtae024", "issn-l": null}, "abstract": "Marine sediments have been suggested as a reservoir for pathogenic bacteria, including Escherichia coli. The origins, and properties promoting survival of E. coli in marine sediments (including osmotolerance, biofilm formation capacity, and antibiotic resistance), have not been well-characterized. Phenotypes and genotypes of 37 E. coli isolates from coastal marine sediments were characterized. The isolates were diverse: 30 sequence types were identified that have been previously documented in humans, livestock, and other animals. Virulence genes were found in all isolates, with more virulence genes found in isolates sampled from sediment closer to the effluent discharge point of a wastewater treatment plant. Antibiotic resistance was demonstrated phenotypically for one isolate, which also carried tetracycline resistance genes on a plasmid. Biofilm formation capacity varied for the different isolates, with most biofilm formed by phylogroup B1 isolates. All isolates were halotolerant, growing at 3.5% NaCl. This suggests that the properties of some isolates may facilitate survival in marine environments and can explain in part how marine sediments can be a reservoir for pathogenic E. coli. As disturbance of sediment could resuspend bacteria, this should be considered as a potential contributor to compromised bathing water quality at nearby beaches.", "doi": "10.1093/femsmc/xtae024", "pmid": "39246828", "labels": {"Clinical Genomics Lund": "Service", "Bioinformatics Support for Computational Resources": "Service", "Clinical Genomics": "Service"}, "xrefs": [{"db": "pmc", "key": "PMC11378635"}, {"db": "pii", "key": "xtae024"}], "notes": [], "created": "2024-11-14T09:26:47.317Z", "modified": "2025-02-28T14:17:47.278Z"}]}