Microbial Life and Ecology in Extreme Environments

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

Deadline for manuscript submissions: 31 January 2025 | Viewed by 858

Special Issue Editor


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Guest Editor
Department of Ecology and Evolutionary Biology, University of Colorado, Campus Box 334, Boulder, CO 80309, USA
Interests: microbial ecology; microbial diversity; environmental microbiology; applied microbiology; microbial life in extreme environments

Special Issue Information

Dear Colleagues,

Microorganisms thriving in extreme environments demonstrate incredible resilience and diversity, adapting to conditions such as extreme heat, cold, acidity, or salinity that are inhospitable to most life forms. From the boiling temperatures of geothermal springs to the biting cold of the cryosphere, these microbes showcase the breadth of life's potential.

The aim of this Special Issue is to delve into the intricate adaptations of these microorganisms in extreme environments, exploring their ecological roles and the genomic insights that reveal their evolutionary history.

As Guest Editor of this Special Issue, we invite you to submit original research articles, review articles, and short communications related to the topic.

Dr. Lara Vimercati
Guest Editor

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Keywords

  • extremophiles
  • genomics
  • microbial diversity
  • microbial adaptation
  • microbial ecology
  • evolutionary strategies
  • extreme environments
  • environmental microbiology

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Published Papers (1 paper)

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Research

16 pages, 3753 KiB  
Article
Microbial Biodiversity in Sediment from the Amuyo Ponds: Three Andean Hydrothermal Lagoons in Northern Chile
by Claudia Vilo, Francisca Fábrega, Víctor L. Campos and Benito Gómez-Silva
Microorganisms 2024, 12(11), 2238; https://doi.org/10.3390/microorganisms12112238 - 5 Nov 2024
Viewed by 651
Abstract
The Amuyo Ponds (APs) are a group of three brackish hydrothermal lagoons located at 3700 m above sea level in a pre-Andean setting in the Atacama Desert. Each pond shows a conspicuous green (GP), red (RP), or yellow (YP) coloration, and discharges water [...] Read more.
The Amuyo Ponds (APs) are a group of three brackish hydrothermal lagoons located at 3700 m above sea level in a pre-Andean setting in the Atacama Desert. Each pond shows a conspicuous green (GP), red (RP), or yellow (YP) coloration, and discharges water rich in arsenic and boron into the Caritaya River (Camarones Basin, northern Chile). Microorganisms are subjected to harsh environmental conditions in these ponds, and the microbial composition and diversity in the Amuyo Ponds’ sediments are unknown. The microbial life colonizing AP sediments was explored by metagenomics analyses, showing a diverse microbial life dominated by members of the bacterial domain, with nearly 800 bacterial genome sequences, and sequences associated with Archaea, Eukarya, and viruses. The genus Pseudomonas was more abundant in GP and YP sediments, while the genera Pseudomonas, Aeromonas, and Shewanella were enriched in RP sediments. Archaeal composition was similar in all sediments, and enriched with methanogens sequences from the Archaeoglobi and Halobacteria classes. Abundant fungi sequences were detected in all sediments from the phyla Blastocladiomycota and Ascomycota. We also report putative functional capabilities related to virulence and defense genes, the biosynthesis of secondary metabolites, and tolerance to arsenic. Thirteen bacterial and fourteen viral metagenome-assembled genomes were reconstructed and informed here. This work expands our knowledge on the richness of the microorganisms in the APs and open further studies on the ecology and genomics of this striking Andean geosite. Full article
(This article belongs to the Special Issue Microbial Life and Ecology in Extreme Environments)
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