Bacterial and archaeal diversity in high altitude wetlands of the Chilean Altiplano

Dorador, Cristina, Vila, Irma, Witzel, Karl-Paul and Imhoff, Johannes F. (2013) Bacterial and archaeal diversity in high altitude wetlands of the Chilean Altiplano Fundamental and applied limnology : Archiv für Hydrobiologie, 182 (2). pp. 135-159. DOI 10.1127/1863-9135/2013/0393.

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Abstract

The microbial diversity of five unconnected high altitude (≥ 3800 m a.s.l.) wetlands from the Chilean Altiplano was analyzed by a culture-independent approach, using 16 S rRNA gene sequences of different microbial groups. The wetlands (Chungara Lake, Parinacota wetland, Piacota Lake, Salar de Huasco and Salar de Ascotan) differed in terms of habitat type and physicochemical properties. The bacterial communities of these systems were dominated by Bacteroidetes (24-94 % of the clones) and Proteobacteria (Alpha, Beta, Gamma and Delta subgroups) with smaller contributions by the Firmicutes, Actinobacteria, Planctomycetes, Verrucomicrobia, Chloroflexi, Cyanobacteria, Acidobacteria, Deinococcus-Thermus and Candidate Division WS3. Fourteen phylotypes matching Alphaproteobacteria were part of the marine Roseobacter clade, representing new clusters of this group. Archaeal diversity was much lower than that seen for bacteria, and was dominated by Euryarchaeota; however Crenarchaeota were also present. Considering the large differences in microbial community composition between sites and samples, the presence of eleven phylotypes common to two or more habitats is highlighted. The frequent presence of new taxa in different phylogenetic groups in the altiplanic wetlands studied here revealed the unique characteristics of Bacteria and Archaea in these fragile Andean ecosystems.

Document Type: Article
Additional Information: WOS:000317576100007
Keywords: microbial diversity; 16 s rdna; chungara lake; parinacota wetland; piacota lake; salar de huasco; salar de ascotan; roseobacter clade; 16S RIBOSOMAL-RNA; ANOXYGENIC PHOTOTROPHIC BACTERIA; GEL-ELECTROPHORESIS ANALYSIS; MARINE ROSEOBACTER LINEAGE; NORTHERN CHILE; SP NOV.; MICROBIAL COMMUNITIES; ENRICHMENT CULTURES; GENETIC DIVERSITY; TIBETAN PLATEAU
Research affiliation: OceanRep > GEOMAR > FB3 Marine Ecology > FB3-MI Marine Microbiology
OceanRep > The Future Ocean - Cluster of Excellence
Refereed: Yes
DOI etc.: 10.1127/1863-9135/2013/0393
ISSN: 1863-9135
Projects: Future Ocean
Date Deposited: 23 Apr 2013 11:59
Last Modified: 16 Jan 2017 12:00
URI: http://eprints.uni-kiel.de/id/eprint/21134

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