Phylogenetic diversity of nonmarine picocyanobacteria

Abstract We studied the phylogenetic diversity of nonmarine picocyanobacteria broadening the sequence data set with 43 new sequences of the 16S rRNA gene. The sequences were derived from monoclonal strains isolated from four volcanic high-altitude athalassohaline lakes in Mexico, five glacial ultrao...

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Bibliographic Details
Published in:FEMS microbiology ecology 2013-08, Vol.85 (2), p.293-301
Main Authors: Callieri, Cristiana, Coci, Manuela, Corno, Gianluca, Macek, Miroslav, Modenutti, Beatriz, Balseiro, Esteban, Bertoni, Roberto
Format: Article
Language:English
Subjects:
Animal, plant and microbial ecology
Bacteriology
Biodiversity
Biological and medical sciences
Ecology
Freshwater
Fundamental and applied biological sciences. Psychology
Genetic diversity
Lakes
Lakes - microbiology
Mexico
Microbial ecology
Microbiology
Miscellaneous
phylogenetic diversity
Phylogenetics
Phylogeny
picocyanobacteria
RNA, Ribosomal, 16S - genetics
Synechococcus
Synechococcus - classification
Synechococcus - genetics
Synechococcus - isolation & purification
Various environments (extraatmospheric space, air, water)
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Summary:Abstract We studied the phylogenetic diversity of nonmarine picocyanobacteria broadening the sequence data set with 43 new sequences of the 16S rRNA gene. The sequences were derived from monoclonal strains isolated from four volcanic high-altitude athalassohaline lakes in Mexico, five glacial ultraoligotrophic North Patagonian lakes and six Italian lakes of glacial, volcanic and morenic origin. The new sequences fall into a number of both novel and previously described clades within the phylogenetic tree of 16S rRNA gene. The new cluster of Lake Nahuel Huapi (North Patagonia) forms a sister clade to the subalpine cluster II and the marine Synechococcus subcluster 5.2. Our finding of the novel clade of ‘halotolerants’ close to the marine subcluster 5.3 (Synechococcus RCC307) constitutes an important demonstration that euryhaline and marine strains affiliate closely. The intriguing results obtained shed new light on the importance of the nonmarine halotolerants in the phylogenesis of picocyanobacteria.
ISSN:0168-6496
1574-6941
DOI:10.1111/1574-6941.12118