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Bacterial, Archaeal, and Eukaryotic Diversity across Distinct Microhabitats in an Acid Mine Drainage
- Source :
- Frontiers in Microbiology, Frontiers in Microbiology, Frontiers Media, 2017, 8 (SEP), ⟨10.3389/fmicb.2017.01756⟩, Scopus, Frontiers in Microbiology, Vol 8 (2017), RUO. Repositorio Institucional de la Universidad de Oviedo, instname
- Publication Year :
- 2017
- Publisher :
- Frontiers Media S.A., 2017.
-
Abstract
- cited By 0; International audience; 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 Ferich 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 unction 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 diversityof microbial eukaryotes in AMD habitats.
- Subjects :
- 0301 basic medicine
Microbiology (medical)
Cyanobacteria
stalactite
Microorganism
030106 microbiology
lcsh:QR1-502
Thermoplasmata
Biology
Microbiology
lcsh:Microbiology
biofilm
03 medical and health sciences
Crenarchaeota
Botany
ore
Betaproteobacteria
Original Research
[SDV.EE.SANT]Life Sciences [q-bio]/Ecology, environment/Health
Bacteria
Ecology
15. Life on land
Acid mine drainage
biology.organism_classification
Archaea
030104 developmental biology
Eukarya
sediment
Acidobacteria
acid mine drainage
Subjects
Details
- Language :
- English
- ISSN :
- 1664302X
- Volume :
- 8
- Database :
- OpenAIRE
- Journal :
- Frontiers in Microbiology
- Accession number :
- edsair.doi.dedup.....192570505bfbe84e4ee30a1a2ea1fc81
- Full Text :
- https://doi.org/10.3389/fmicb.2017.01756