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- W2754392953 abstract "Acid mine drainages are characterized by their low pH and the presence of dissolved toxic metallic species. Microorganisms survive in different microhabitats within the ecosystem, namely water, sediments, and biofilms. In this report, we surveyed the microbial diversity within all domains of life in the different microhabitats at Los Rueldos abandoned mercury underground mine (NW Spain), and predicted bacterial function based on community composition. Sediment samples contained higher proportions of soil bacteria (AD3, Acidobacteria), as well as Crenarchaeota and Methanomassiliicoccaceae archaea. Oxic and hypoxic biofilm samples were enriched in bacterial iron oxidizers from the genus Leptospirillum, order Acidithiobacillales, class Betaproteobacteria, and archaea from the class Thermoplasmata. Water samples were enriched in Cyanobacteria and Thermoplasmata archaea at a 3-98% of the sunlight influence, whilst Betaproteobacteria, Thermoplasmata archaea, and Micrarchaea dominated in acid water collected in total darkness. Stalactites hanging from the Fe-rich mine ceiling were dominated by the neutrophilic iron oxidizer Gallionella and other lineages that were absent in the rest of the microhabitats (e.g., Chlorobi, Chloroflexi). Eukaryotes were detected in biofilms and open-air water samples, and belonged mainly to clades SAR (Alveolata and Stramenopiles), and Opisthokonta (Fungi). Oxic and hypoxic biofilms displayed higher proportions of ciliates (Gonostomum, Oxytricha), whereas water samples were enriched in fungi (Paramicrosporidium and unknown microbial Helotiales). Predicted function through bacterial community composition suggested adaptive evolutive convergence of function in heterogeneous communities. Our study showcases a broad description of the microbial diversity across different microhabitats in the same environment and expands the knowledge on the diversity of microbial eukaryotes in AMD habitats." @default.
- W2754392953 created "2017-09-25" @default.
- W2754392953 creator A5010931275 @default.
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- W2754392953 creator A5051009806 @default.
- W2754392953 creator A5056089668 @default.
- W2754392953 creator A5056158166 @default.
- W2754392953 date "2017-09-12" @default.
- W2754392953 modified "2023-10-17" @default.
- W2754392953 title "Bacterial, Archaeal, and Eukaryotic Diversity across Distinct Microhabitats in an Acid Mine Drainage" @default.
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- W2754392953 doi "https://doi.org/10.3389/fmicb.2017.01756" @default.
- W2754392953 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/5600952" @default.
- W2754392953 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/28955322" @default.
- W2754392953 hasPublicationYear "2017" @default.
- W2754392953 type Work @default.