Unique communities of anoxygenic phototrophic bacteria in saline lakes of Salar de Atacama (Chile): evidence for a new phylogenetic lineage of phototrophic Gammaproteobacteria from pufLM gene analyses: APB of Salar de Atacama using functional genes
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Phototrophic bacteria are important primary producers of salt lakes in the Salar de Atacama and at times form visible mass developments within and on top of the lake sediments. The communities of phototrophic bacteria from two of these lakes were characterized by molecular genetic approaches using key genes for the biosynthesis of the photosynthetic apparatus in phototrophic purple bacteria (pufLM) and in green sulfur bacteria (fmoA). Terminal restriction fragment length polymorphism of the pufLM genes indicated high variability of the community composition between the two lakes and subsamples thereof. The communities were characterized by the dominance of a novel, so far undescribed lineage of pufLM containing bacteria and the presence of representatives related to known halophilic Chromatiaceae and Ectothiorhodospiraceae. In addition, the presence of BChl b-containing anoxygenic phototrophic bacteria and of aerobic anoxygenic bacteria was indicated. Green sulfur bacteria were not detected in the environmental samples, although a bacterium related to Prosthecochloris indicum was identified in an enrichment culture. This is the first comprehensive description of phototrophic bacterial communities in a salt lake of South America made possible only due to the application of the functional pufLM genes.
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Salt flats are fragile ecosystems characterized by unique biodiversity, including birds in conservation categories and benthonic microorganisms fundamental to trophic chains.
“Salt flats are fragile ecosystems characterized by unique biodiversity, including birds in the conservation category, such as flamingos, and benthonic microorganisms fundamental to the tropic chains.”
From Water or mineral resource? Legal interpretations and hydrosocial configurations of lithium mining in Chile (2023) · cites this paper as Thiel et al., 2010
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- Authors
- Thiel, V., Tank, M., Neulinger, S. C., Gehrmann, L., Dorador, C., & Imhoff, J. F.
- Affiliations
- GEOMAR Helmholtz Centre for Ocean Research Kiel (DE)
- Universidad de Antofagasta (CL)
- Venue
- FEMS Microbiology Ecology
- Publisher
- Oxford University Press (OUP)
- Published
- 2010-09-24
- Volume
- 74
- Issue
- 3
- Pages
- 510-522
- ISSN
- 0168-6496 (ISSN-L)
- OpenAlex
- W1961599254
- Cited by
- 44
- References
- 67
- Citations by year
- 2025: 2 · 2024: 2 · 2023: 2 · 2022: 2 · 2021: 5 · 2020: 6 · 2019: 4 · 2018: 4 · 2017: 4 · 2016: 7 · 2015: 2 · 2014: 1 · 2012: 1
- FWCI
- 0.86
- Type
- journal article
- Language
- en
- Open access
- green
- americanae.aecid.es
- Licence
- other-oa
- Locations
- FEMS Microbiology Ecology (publishedVersion)
- PubMed (publishedVersion)
- Helmholtz Centre for Ocean Research Kiel (GEOMAR) (acceptedVersion)
- Americanae (AECID Library) (submittedVersion, other-oa)
- LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (submittedVersion, other-oa)
- Funders
- Deutscher Akademischer Austauschdienst
- Topics
- Physical Sciences › Environmental Science › Ecology › Microbial Community Ecology and Physiology
- Physical Sciences › Environmental Science › Ecology › Polar Research and Ecology
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Phylogenetic Studies
- Keywords
- anoxygenic phototrophic bacteria, saline lakes, Salar de Atacama, Gammaproteobacteria, purple bacteria, green sulfur bacteria, bacterial community composition, Ectothiorhodospiraceae, salt lake sediments
- MeSH terms
- Bacterial Proteins, Chile, Chromatiaceae, DNA, Bacterial, Genes, Bacterial, Photosynthesis, Phylogeny, Polymorphism, Restriction Fragment Length, Water Microbiology, DNA Fingerprinting, Gammaproteobacteria, Ectothiorhodospiraceae, Photosynthetic Reaction Center Complex Proteins, Light-Harvesting Protein Complexes, Phototrophic Processes, Salinity
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