Characterization of Enterococcus faecalis and Enterococcus faecium from wild flowers.
Summary of "Characterization of Enterococcus faecalis and Enterococcus faecium from wild flowers."
Wild flowers in the South of Spain were screened for Enterococcus faecalis and Enterococcus faecium. Enterococci were frequently associated with prickypear and fieldpoppy flowers. Forty-six isolates, from 8 different flower species, were identified as E. faecalis (28 isolates) or E. faecium (18 isolates) and clustered in well-defined groups by ERIC-PCR fingerprinting. A high incidence of antibiotic resistance was detected among the E. faecalis isolates, especially to quinupristin/dalfopristin (75%), rifampicin (68%) and ciprofloxacin (57%), and to a lesser extent to levofloxacin (35.7%), erythromycin (28.5%), tetracycline (3.5%), chloramphenicol (3.5%) and streptomycin (3.5%). Similar results were observed for E. faecium isolates, except for a higher incidence of resistance to tetracycline (17%) and lower to erythromycin (11%) or quinupristin/dalfopristin (22%). Vancomycin or teicoplanin resistances were not detected. Most isolates (especially E. faecalis) were proteolytic and carried the gelatinase gene gelE. Genes encoding other potential virulence factors (ace, efaA (fs), ccf and cpd) were frequently detected. Cytolysin genes were mainly detected in a few haemolytic E. faecium isolates, three of which also carried the collagen adhesin acm gene. Hyaluronidase gene (hyl ( Efm )) was detected in two isolates. Many isolates produced bacteriocins and carried genes for enterocins A, B, and L50 mainly. The similarities found between enterococci from wild flowers and those from animal and food sources raise new questions about the puzzling lifestyle of these commensals and opportunistic pathogens.
Affiliation
Área de Microbiología, Departamento de Ciencias de la Salud, Facultad de Ciencias Experimentales (Edif. B3), Universidad de Jaén, Campus Las Lagunillas s/n, 23071, Jaén, Spain.
Journal Details
This article was published in the following journal.
Name: Antonie van Leeuwenhoek
ISSN: 1572-9699
Pages:
Links
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/22183298
- DOI: http://dx.doi.org/10.1007/s10482-011-9684-9
Medical and Biotech [MESH] Definitions
Enterococcus Faecium
A species of gram-positive, coccoid bacteria whose organisms are normal flora of the intestinal tract. Unlike ENTEROCOCCUS FAECALIS, this species may produce an alpha-hemolytic reaction on blood agar and is unable to utilize pyruvic acid as an energy source.
Enterococcus Faecalis
A species of gram-positive, coccoid bacteria commonly isolated from clinical specimens and the human intestinal tract. Most strains are nonhemolytic.
Enterococcus
A genus of gram-positive, coccoid bacteria consisting of organisms causing variable hemolysis that are normal flora of the intestinal tract. Previously thought to be a member of the genus STREPTOCOCCUS, it is now recognized as a separate genus.
Animals, Wild
Animals considered to be wild or feral or not adapted for domestic use. It does not include wild animals in zoos for which ANIMALS, ZOO is available.
Acanthaceae
A plant family of the order Scrophulariales, subclass Asteridae, class Magnoliopsida. It is characterized by simple leaves in opposite pairs, cystoliths (enlarged cells containing crystals of calcium carbonate), and bilaterally symmetrical and bisexual flowers that are usually crowded together. The common name for Ruellia of wild petunia is easily confused with PETUNIA.
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