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Microbial Genomics logo

Volume 9, Issue 7

Novel diversity of polar Cyanobacteria revealed by genome-resolved metagenomics Open Access

Abstract

Benthic microbial mats dominated by Cyanobacteria are important features of polar lakes. Although culture-independent studies have provided important insights into the diversity of polar Cyanobacteria, only a handful of genomes have been sequenced to date. Here, we applied a genome-resolved metagenomics approach to data obtained from Arctic, sub-Antarctic and Antarctic microbial mats. We recovered 37 metagenome-assembled genomes (MAGs) of Cyanobacteria representing 17 distinct species, most of which are only distantly related to genomes that have been sequenced so far. These include (i) lineages that are common in polar microbial mats such as the filamentous taxa , , / and ; (ii) the less common taxa and ; (iii) an enigmatic lineage only distantly related to ; and (iv) an early branching lineage in the order that is distributed across the cold biosphere, for which we propose the name Sivonenia alaskensis. Our results show that genome-resolved metagenomics is a powerful tool for expanding our understanding of the diversity of Cyanobacteria, especially in understudied remote and extreme environments.

  • Received:
  • Accepted:
  • Published Online:
Keyword(s): Cyanobacteria , metagenomics , microbial mats and polar regions
Funding
This study was supported by the:
  • INTERACT (Award MiBiPol)
    • Principle Award Recipient: ElieVerleyen
  • Fonds De La Recherche Scientifique - FNRS (Award CR.CH.10-11-1.5139.11)
    • Principle Award Recipient: AnnickWilmotte
  • Fonds De La Recherche Scientifique - FNRS (Award 2.4570.09)
    • Principle Award Recipient: AnnickWilmotte
  • Belgian Federal Science Policy Office (Award PORTAL – B2/212/P1/PORTAL)
    • Principle Award Recipient: YannickLara
  • Belgian Federal Science Policy Office (Award CCAMBIO – SD/BA/03A)
    • Principle Award Recipient: AnnickWilmotte
  • Belgian Federal Science Policy Office (Award AMBIO – SD/BA/01A)
    • Principle Award Recipient: AnnickWilmotte
© 2023 The Authors
  • This is an open-access article distributed under the terms of the Creative Commons Attribution License.
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http://instance.metastore.ingenta.com/content/journal/mgen/10.1099/mgen.0.001056
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Novel diversity of polar Cyanobacteria revealed by genome-resolved metagenomics
M Gen 9, 001056 (2023); https://doi.org/10.1099/mgen.0.001056
/content/journal/mgen/10.1099/mgen.0.001056
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