Novel diversity of polar Cyanobacteria revealed by genome-resolved metagenomics.

peer reviewed 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-res...

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Bibliographic Details
Published in:Microbial Genomics
Main Authors: Pessi, Igor S, Popin, Rafael V, Durieu, Benoit, Lara, Yannick, Tytgat, Bjorn, Savaglia, Valentina, Roncero-Ramos, Beatriz, Hultman, Jenni, Verleyen, Elie, Vyverman, Wim, Wilmotte, Annick
Other Authors: InBios - Integrative Biological Sciences - ULiège
Format: Article in Journal/Newspaper
Language:English
Published: Microbiology Society 2023
Subjects:
Cyanobacteria
metagenomics
microbial mats
polar regions
Lakes/microbiology
Metagenome
Base Sequence
Cyanobacteria/genetics
General Medicine
Life sciences
Environmental sciences & ecology
Biochemistry
biophysics & molecular biology
Microbiology
Sciences du vivant
Sciences de l’environnement & écologie
Biochimie
biophysique & biologie moléculaire
Microbiologie
Antarc*
Antarctic
Online Access:https://orbi.uliege.be/handle/2268/305708
https://orbi.uliege.be/bitstream/2268/305708/1/mgen001056.pdf
https://doi.org/10.1099/mgen.0.001056
Description
Summary:peer reviewed 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 Pseudanabaena, Leptolyngbya, Microcoleus/Tychonema and Phormidium; (ii) the less common taxa Crinalium and Chamaesiphon; (iii) an enigmatic Chroococcales lineage only distantly related to Microcystis; and (iv) an early branching lineage in the order Gloeobacterales that is distributed across the cold biosphere, for which we propose the name Candidatus 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. CCAMBIO BELSPO - AMBIO – SD/BA/01A BELSPO - CCAMBIO – SD/BA/03A BELSPO - PORTAL – B2/212 /P1/PORTAL EU-Interact project MiBiPol. I.S.P. 14. Life below water 15. Life on land

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