The Microbiology of Natural and Artificial Aquatic Ecosystems

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

Deadline for manuscript submissions: closed (31 July 2021) | Viewed by 6396

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
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Special Issue Information

Dear Colleagues,

Freshwaters provide excellent habitats for the multiplication of prokaryotic organisms; the microbiology of aquatic habitats is a widely studied area. Natural lakes, rivers or streams are often clean, having low nutrient contents, but some are highly contaminated by agricultural, industrial or other pollutants. Bacteria and archaea that inhibit aquatic ecosystems are involved in several transforming processes; their role in organic and inorganic nutrient conversions is well known: many of them are involved in biodegradation processes and even used in bioremediation. The amount of available resources and conditions in freshwaters influence the multiplication, diversity and activity of the microorganisms, although they can differ strongly; even nutrient-depleted environments can serve as several niches for bacteria.

The aim of this Special Issue is to provide a collection of papers about the importance and diversity of Bacteria and Archaea in low-nutrient-content natural and artificial aquatic habitats, and how they are involved in production, nutrient regeneration and mobilization processes. Papers about the survival strategies of bacteria in nutrient-limited conditions are also accepted as well as papers connected to the reaction of single bacteria or total microbial communities to different pollutants (or disinfectants) occurring in different aquatic environments. 

We welcome any manuscripts dealing with bacterial communities in artificial aquatic ecosystems (e.g., plants, industrial equipment, baths, drinking water supply systems, etc.) and the possible role of microbes in corrosion processes. The Guest Editor will also consider papers addressing the hygienic aspects of waters, data about risk assessment in aquatic habitats, the interactions between microbial populations in aquatic ecosystems and relevant papers also conected to other microorganisms (e.g., algae and fungi).

Dr. Erika Tóth
Dr. Márta Vargha
Guest Editors

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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

  • bacteria and archaea
  • natural and artificial aquatic ecosystems
  • microbial diversity
  • pollutant removal
  • microbial activity

Published Papers (2 papers)

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Research

12 pages, 19052 KiB  
Article
Connection between the Gut Microbiota of Largemouth Bass (Micropterus salmoides) and Microbiota of the Pond Culture Environment
by Qianfu Liu, Zini Lai, Yuan Gao, Chao Wang, Yanyi Zeng, Erchun Liu, Yongzhan Mai, Wanling Yang and Haiyan Li
Microorganisms 2021, 9(8), 1770; https://0-doi-org.brum.beds.ac.uk/10.3390/microorganisms9081770 - 19 Aug 2021
Cited by 21 | Viewed by 2975
Abstract
The vital role of the gut microbiota in fish growth, development, immunity, and health has been largely confirmed. However, the interaction between environmental microbiota and the gut microbiota of aquaculture species remains unclear. Therefore, we analyzed the gut microbiota of largemouth bass ( [...] Read more.
The vital role of the gut microbiota in fish growth, development, immunity, and health has been largely confirmed. However, the interaction between environmental microbiota and the gut microbiota of aquaculture species remains unclear. Therefore, we analyzed the gut microbiota of largemouth bass (Micropterus salmoides) collected from subtropical ponds in southern China, as well as the pond water and aquatic sediment microbiota, using high-throughput sequencing of the 16S rRNA gene. Our results demonstrated significant differences in the compositions of pond water, sediment, and the gut microbiota of largemouth bass. Moreover, these compositions changed throughout the culture period. Only approximately 1% of the bacterial species in the pond sediment and gut microbiota were exchanged. However, the bacterial proportion of the gut microbiota from pond water microbiota was approximately 7% in samples collected in June and August, which increased markedly to 73% in October. Similarly, the proportion of bacteria in the pond water microbiota from the gut microbiota was approximately 12% in June and August, which increased to 45% in October. The study findings provide basic information for understanding the interactions between environmental microbiota and the gut microbiota of cultured fish, which may contribute to improved pond culture practices for largemouth bass. Full article
(This article belongs to the Special Issue The Microbiology of Natural and Artificial Aquatic Ecosystems)
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15 pages, 3904 KiB  
Article
Unraveling the Metabolic Potential of Asgardarchaeota in a Sediment from the Mediterranean Hydrocarbon-Contaminated Water Basin Mar Piccolo (Taranto, Italy)
by Andrea Firrincieli, Andrea Negroni, Giulio Zanaroli and Martina Cappelletti
Microorganisms 2021, 9(4), 859; https://0-doi-org.brum.beds.ac.uk/10.3390/microorganisms9040859 - 16 Apr 2021
Cited by 6 | Viewed by 2656
Abstract
Increasing number of metagenome sequencing studies have proposed a central metabolic role of still understudied Archaeal members in natural and artificial ecosystems. However, their role in hydrocarbon cycling, particularly in the anaerobic biodegradation of aliphatic and aromatic hydrocarbons, is still mostly unknown in [...] Read more.
Increasing number of metagenome sequencing studies have proposed a central metabolic role of still understudied Archaeal members in natural and artificial ecosystems. However, their role in hydrocarbon cycling, particularly in the anaerobic biodegradation of aliphatic and aromatic hydrocarbons, is still mostly unknown in both marine and terrestrial environments. In this work, we focused our study on the metagenomic characterization of the archaeal community inhabiting the Mar Piccolo (Taranto, Italy, central Mediterranean) sediments heavily contaminated by petroleum hydrocarbons and polychlorinated biphenyls (PCB). Among metagenomic bins reconstructed from Mar Piccolo microbial community, we have identified members of the Asgardarchaeota superphylum that has been recently proposed to play a central role in hydrocarbon cycling in natural ecosystems under anoxic conditions. In particular, we found members affiliated with Thorarchaeota, Heimdallarchaeota, and Lokiarchaeota phyla and analyzed their genomic potential involved in central metabolism and hydrocarbon biodegradation. Metabolic prediction based on metagenomic analysis identified the malonyl-CoA and benzoyl-CoA routes as the pathways involved in aliphatic and aromatic biodegradation in these Asgardarchaeota members. This is the first study to give insight into the archaeal community functionality and connection to hydrocarbon degradation in marine sediment historically contaminated by hydrocarbons. Full article
(This article belongs to the Special Issue The Microbiology of Natural and Artificial Aquatic Ecosystems)
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