A shared core microbiome in soda lakes separated by large distances

Jackie K. Zorz (), Christine Sharp, Manuel Kleiner, Paul M. K. Gordon, Richard T. Pon, Xiaoli Dong and Marc Strous
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Jackie K. Zorz: University of Calgary
Christine Sharp: University of Calgary
Manuel Kleiner: North Carolina State University
Paul M. K. Gordon: University of Calgary
Richard T. Pon: University of Calgary
Xiaoli Dong: University of Calgary
Marc Strous: University of Calgary

Nature Communications, 2019, vol. 10, issue 1, 1-10

Abstract: Abstract In alkaline soda lakes, concentrated dissolved carbonates establish productive phototrophic microbial mats. Here we show how microbial phototrophs and autotrophs contribute to this exceptional productivity. Amplicon and shotgun DNA sequencing data of microbial mats from four Canadian soda lakes indicate the presence of > 2,000 species of Bacteria and Eukaryotes. We recover metagenome-assembled-genomes for a core microbiome of 7,000 proteins show how phototrophic populations allocate resources to specific processes and occupy complementary niches. Carbon fixation proceeds by the Calvin-Benson-Bassham cycle, in Cyanobacteria, Gammaproteobacteria, and, surprisingly, Gemmatimonadetes. Our study provides insight into soda lake ecology, as well as a template to guide efforts to engineer biotechnology for carbon dioxide conversion.

Date: 2019
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DOI: 10.1038/s41467-019-12195-5

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