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Istituto sull'inquinamento atmosferico

Torna all'elenco Contributi in rivista anno 2017

Contributo in rivista

Tipo: Articolo in rivista

Titolo: Exploring the under-investigated "microbial dark matter" of drinking water treatment plants

Anno di pubblicazione: 2017

Formato: Elettronico

Autori: Bruno, Antonia; Sandionigi, Anna; Rizzi, Ermanno; Bernasconi, Marzia; Vicario, Saverio; Galimberti, Andrea; Cocuzza, Clementina; Labra, Massimo; Casiraghi, Maurizio

Affiliazioni autori: Univ Milan; CNR; Fnn Telethon; Metropolitana Milanese SPA; Univ Bari; CNR; Univ Milan

Autori CNR:


Lingua: inglese

Abstract: Scientists recently reported the unexpected detection of unknown or poorly studied bacterial diversity in groundwater. The ability to uncover this neglected biodiversity mainly derives from technical improvements, and the term "microbial dark matter" was used to group taxa poorly investigated and not necessarily monophyletic. We focused on such under-investigated microbial dark matter of drinking water treatment plant from groundwater, across carbon filters, to post-chlorination. We tackled this topic using an integrated approach where the efficacy of stringent water filtration (10000 MWCO) in recovering even the smallest environmental microorganisms was coupled with high-throughput DNA sequencing to depict an informative spectrum of the neglected microbial diversity. Our results revealed that the composition of bacterial communities varies across the plant system: Parcubacteria (OD1) superphylum is found mainly in treated water, while groundwater has the highest heterogeneity, encompassing non-OD1 candidate phyla (Microgenomates, Saccharibacteria, Dependentiae, OP3, OP1, BRC1, WS3). Carbon filters probably act as substrate for microorganism growth and contribute to seeding water downstream, since chlorination does not modify the incoming bacterial community. New questions arise about the role of microbial dark matter in drinking water. Indeed, our results suggest that these bacteria might play a central role in the microbial dynamics of drinking water.

Lingua abstract: inglese

Pagine da: 44350

Pagine a: 44350

Pagine totali: 7


Scientific reports Nature Publishing Group
Paese di pubblicazione: Regno Unito
Lingua: inglese
ISSN: 2045-2322

Numero volume: 7

DOI: 10.1038/srep44350

Referee: Sė: Internazionale

Stato della pubblicazione: Postprint

Indicizzato da: ISI Web of Science (WOS) [000396229000001]

Parole chiave:

  • Evolution
  • Water
  • microbiology

URL: https://doi.org/10.1038/srep44350

Strutture CNR:

Allegati: Exploring the under-investigated "microbial dark matter" of drinking water treatment plants (application/pdf)
pdf dell'anteprima elettronica di pubblicazione

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