Persistence of Enterobacteriaceae Drawn into a Marine Saltern (Saline di Tarquinia, Italy) from the Adjacent Coastal Zone
Metadatos
Afficher la notice complèteAuteur
Gorrasi, Susanna; González Martínez, Alejandro; González López, Jesús Juan; Muñoz Palazón, BarbaraEditorial
MDPI
Materia
Enterobacteriaceae Hypersaline environment Marine salterns Saline di Tarquinia Metabarcoding survey
Date
2021Referencia bibliográfica
Gorrasi, S.; Pasqualetti, M.; Franzetti, A.; Gonzalez-Martinez, A.; Gonzalez-Lopez, J.; Muñoz-Palazon, B.; Fenice, M. Persistence of Enterobacteriaceae Drawn into a Marine Saltern (Saline di Tarquinia, Italy) from the Adjacent Coastal Zone. Water 2021, 13, 1443. https:// doi.org/10.3390/w13111443
Résumé
Enterobacteriaceae is present in various niches worldwide (i.e., the gastrointestinal tracts of
animals, clinical specimens, and diverse environments) and hosts some well-known pathogens (i.e.,
salmonellas, shigellas and pathogenic coliforms). No investigation has focused on its occurrence in
marine salterns, and it is not clear if these hypersaline environments could be a reservoir for these
bacteria including some potentially harmful members. In this study, a two-year metabarcoding
survey was carried out on samples collected from different ponds of the “Saline di Tarquinia”
salterns and the nearby coastal waters. Enterobacteriaceae was recorded almost constantly in the
seawaters feeding the saltern. Its abundance was generally higher in the sea than in the ponds,
probably due to the higher anthropic impact. The same trend was evidenced for the key genus
(Escherichia/Shigella) and OTU (OTU 5) of the Enterobacteriaceae community. Various parameters
affected taxon/OTU abundance: Enterobacteriaceae, Escherichia/Shigella and OTU5 decreased with
increasing salinity and rains; moreover, Escherichia/Shigella and OTU 5 were higher in autumn than
in spring. Although Enterobacteriaceae did not seem to find the most favourable conditions for a
high-abundance persistence in the saltern environment, it did not disappear. These observations
suggested this environment as a potential reservoir for bacteria with possible important health
implications.