Microbial Communities and Antimicrobial Resistance in Contaminated Aquatic and Terrestrial Environments

A special issue of Microorganisms (ISSN 2076-2607). This special issue belongs to the section "Environmental Microbiology".

Deadline for manuscript submissions: closed (31 August 2023) | Viewed by 2163

Special Issue Editors


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Guest Editor
Department of Microbiology, Eötvös Loránd University, 1117 Budapest, Hungary
Interests: microbial ecology; applied microbiology; prokaryotic taxonomy
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Guest Editor
National Center for Public Health, Almaty, Kazakhstan
Interests: water hygiene; drinking water quality; bathing water quality; risk assessment
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The contamination of aquatic habitats (e.g., freshwater and drinking water) and soils by heavy metals, nanomaterials, pharmaceuticals and their residues, and other xenobiotics is a serious global problem.

The microorganisms that disturb these ecosystems are involved in various transformation processes. Their roles in organic and inorganic nutrient conversion are well known, with many responsible for biodegradation processes and some even used in bioremediation.

Aquatic habitats are also known hotspots for the transmission of antimicrobial resistance (AMR). Contaminants, such as heavy metals are known to aggravate the emergence of resistance. From a human health perspective, increasing the prevalence of AMR in the environment of great importance.

The aim of this Special Issue is to provide a collection of papers on the importance and diversity of microorganisms (both prokaryotes and eukaryotes) in natural and contaminated aquatic and terrestrial environments, with a focus on their involvement in production, nutrient regeneration, and mobilization processes (particularly those connected to contamination). We also welcome papers on the survival strategies and resistance mechanisms of bacteria, as well as papers addressing the reactions of single bacteria or total microbial communities to different pollutants (or disinfectants) that occur in different aquatic or terrestrial environments. 

We welcome manuscripts that discuss risk assessment, the hygienic aspects of waters, and the interactions between microbial populations in aquatic ecosystems, as well as relevant papers on other microorganisms (e.g., algae and fungi) in aquatic habitats.

Dr. Erika Tóth
Dr. Márta Vargha
Guest Editors

Manuscript Submission Information

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • microbial community
  • diversity
  • aquatic and terrestrial environments
  • contamination
  • environmental antimicrobial resistance
  • risk assessment

Published Papers (1 paper)

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Research

19 pages, 2376 KiB  
Article
The Impact of Anti-Inflammatory Drugs on the Prokaryotic Community Composition and Selected Bacterial Strains Based on Microcosm Experiments
by Rózsa Farkas, Tamás Mireisz, Marwene Toumi, Gorkhmaz Abbaszade, Nóra Sztráda and Erika Tóth
Microorganisms 2023, 11(6), 1447; https://doi.org/10.3390/microorganisms11061447 - 30 May 2023
Cited by 1 | Viewed by 1274
Abstract
Non-steroidal anti-inflammatory drugs (NSAIDs) are increasingly recognized as potential environmental contaminants that may induce toxicity in aquatic ecosystems. This 3-week microcosm experiment explores the acute impacts of NSAIDs, including diclofenac (DCF), ibuprofen (IBU), and acetylsalicylic acid (ASA), on bacterial communities using a wide [...] Read more.
Non-steroidal anti-inflammatory drugs (NSAIDs) are increasingly recognized as potential environmental contaminants that may induce toxicity in aquatic ecosystems. This 3-week microcosm experiment explores the acute impacts of NSAIDs, including diclofenac (DCF), ibuprofen (IBU), and acetylsalicylic acid (ASA), on bacterial communities using a wide range of these substances (200–6000 ppm). The results showed that the NSAID-treated microcosms had higher cell count values than control samples, though the diversity of microbial communities decreased. The isolated heterotrophic bacteria mostly belonged to Proteobacteria, particularly Klebsiella. Next-generation sequencing (NGS) revealed that NSAIDs altered the structure of the bacterial community composition, with the proportion of Proteobacteria aligning with the selective cultivation results. Bacteria had higher resistance to IBU/ASA than to DCF. In DCF-treated microcosms, there has been a high reduction of the number of Bacteroidetes, whereas in the microcosms treated with IBU/ASA, they have remained abundant. The numbers of Patescibacteria and Actinobacteria have decreased across all NSAID-treated microcosms. Verrucomicrobia and Planctomycetes have tolerated all NSAIDs, even DCF. Cyanobacteria have also demonstrated tolerance to IBU/ASA treatment in the microcosms. The archaeal community structure was also impacted by the NSAID treatments, with Thaumarchaeota abundant in all microcosms, especially DCF-treated microcosms, while Nanoarchaeota is more typical of IBU/ASA-treated microcosms with lower NSAID concentrations. These results indicate that the presence of NSAIDs in aquatic environments could lead to changes in the composition of microbial communities. Full article
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