PMID- 27436046 OWN - NLM STAT- MEDLINE DCOM- 20180411 LR - 20181113 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 6 DP - 2016 Jul 20 TI - Genomic content typifying a prevalent clade of bovine mastitis-associated Escherichia coli. PG - 30115 LID - 10.1038/srep30115 [doi] LID - 30115 AB - E. coli represents a heterogeneous population with capabilities to cause disease in several anatomical sites. Among sites that can be colonised is the bovine mammary gland (udder) and a distinct class of mammary pathogenic E. coli (MPEC) has been proposed. MPEC are the principle causative agents of bovine mastitis in well-managed dairy farms, costing producers in the European Union an estimated euro2 billion per year. Despite the economic impact, and the threat this disease presents to small and medium sized dairy farmers, the factors which mediate the ability for E. coli to thrive in bovine mammary tissue remain poorly elucidated. Strains belonging to E. coli phylogroup A are most frequently isolated from mastitis. In this paper, we apply a population level genomic analysis to this group of E. coli to uncover genomic signatures of mammary infectivity. Through a robust statistical analysis, we show that not all strains of E. coli are equally likely to cause mastitis, and those that do possess specific gene content that may promote their adaptation and survival in the bovine udder. Through a pan-genomic analysis, we identify just three genetic loci which are ubiquitous in MPEC, but appear dispensable for E. coli from other niches. FAU - Goldstone, Robert J AU - Goldstone RJ AD - Heriot-Watt University, School of Life Sciences, Edinburgh Campus, EH14 4AS, Scotland. FAU - Harris, Susan AU - Harris S AD - Heriot-Watt University, School of Life Sciences, Edinburgh Campus, EH14 4AS, Scotland. FAU - Smith, David G E AU - Smith DG AD - Heriot-Watt University, School of Life Sciences, Edinburgh Campus, EH14 4AS, Scotland. LA - eng GR - Biotechnology and Biological Sciences Research Council/United Kingdom PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20160720 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 RN - 0 (Escherichia coli Proteins) SB - IM EIN - Sci Rep. 2020 Sep 25;10(1):16071. PMID: 32978502 MH - Animals MH - Cattle MH - Escherichia coli/*genetics MH - Escherichia coli Infections/*microbiology MH - Escherichia coli Proteins/genetics MH - Female MH - Genome, Bacterial/genetics MH - Genomics/methods MH - Mammary Glands, Animal/microbiology MH - Mastitis, Bovine/*microbiology MH - Phylogeny PMC - PMC4951805 EDAT- 2016/07/21 06:00 MHDA- 2018/04/12 06:00 PMCR- 2016/07/20 CRDT- 2016/07/21 06:00 PHST- 2016/03/15 00:00 [received] PHST- 2016/06/27 00:00 [accepted] PHST- 2016/07/21 06:00 [entrez] PHST- 2016/07/21 06:00 [pubmed] PHST- 2018/04/12 06:00 [medline] PHST- 2016/07/20 00:00 [pmc-release] AID - srep30115 [pii] AID - 10.1038/srep30115 [doi] PST - epublish SO - Sci Rep. 2016 Jul 20;6:30115. doi: 10.1038/srep30115.