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Article

Highly Distinct Microbial Communities in Elevated Strings and Submerged Flarks in the Boreal Aapa-Type Mire

1
Institute of Bioengineering, Research Center of Biotechnology of the Russian Academy of Sciences, 119071 Moscow, Russia
2
Papanin Institute for Biology of Inland Waters, Russian Academy of Sciences, 152742 Borok, Russia
3
Winogradsky Institute of Microbiology, Research Center of Biotechnology of the Russian Academy of Sciences, 119071 Moscow, Russia
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editor: Eiko Kuramae
Microorganisms 2022, 10(1), 170; https://doi.org/10.3390/microorganisms10010170
Received: 21 December 2021 / Revised: 11 January 2022 / Accepted: 12 January 2022 / Published: 13 January 2022
(This article belongs to the Special Issue Soil Microbiome: Biotic and Abiotic Interactions)
Large areas in the northern hemisphere are covered by extensive wetlands, which represent a complex mosaic of raised bogs, eutrophic fens, and aapa mires all in proximity to each other. Aapa mires differ from other types of wetlands by their concave surface, heavily watered by the central part, as well as by the presence of large-patterned string-flark complexes. In this paper, we characterized microbial diversity patterns in the surface peat layers of the neighboring string and flark structures located within the mire site in the Vologda region of European North Russia, using 16S rRNA gene sequencing. The microbial communities in raised strings were clearly distinct from those in submerged flarks. Strings were dominated by the Alpha- and Gammaproteobacteria. Other abundant groups were the Acidobacteriota, Bacteroidota, Verrucomicrobiota, Actinobacteriota, and Planctomycetota. Archaea accounted for only 0.4% of 16S rRNA gene sequences retrieved from strings. By contrast, they comprised about 22% of all sequences in submerged flarks and mostly belonged to methanogenic lineages. Methanotrophs were nearly absent. Other flark-specific microorganisms included the phyla Chloroflexi, Spirochaetota, Desulfobacterota, Beijerinckiaceae- and Rhodomicrobiaceae-affiliated Alphaproteobacteria, and uncultivated groups env.OPS_17 and vadinHA17 of the Bacteroidota. Such pattern probably reflects local anaerobic conditions in the submerged peat layers in flarks. View Full-Text
Keywords: aapa mire; microbial diversity; methanogens; Acidobacteriota; Chloroflexi; Planctomycetota aapa mire; microbial diversity; methanogens; Acidobacteriota; Chloroflexi; Planctomycetota
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MDPI and ACS Style

Rakitin, A.L.; Begmatov, S.; Beletsky, A.V.; Philippov, D.A.; Kadnikov, V.V.; Mardanov, A.V.; Dedysh, S.N.; Ravin, N.V. Highly Distinct Microbial Communities in Elevated Strings and Submerged Flarks in the Boreal Aapa-Type Mire. Microorganisms 2022, 10, 170. https://doi.org/10.3390/microorganisms10010170

AMA Style

Rakitin AL, Begmatov S, Beletsky AV, Philippov DA, Kadnikov VV, Mardanov AV, Dedysh SN, Ravin NV. Highly Distinct Microbial Communities in Elevated Strings and Submerged Flarks in the Boreal Aapa-Type Mire. Microorganisms. 2022; 10(1):170. https://doi.org/10.3390/microorganisms10010170

Chicago/Turabian Style

Rakitin, Andrey L., Shahjahon Begmatov, Alexey V. Beletsky, Dmitriy A. Philippov, Vitaly V. Kadnikov, Andrey V. Mardanov, Svetlana N. Dedysh, and Nikolai V. Ravin. 2022. "Highly Distinct Microbial Communities in Elevated Strings and Submerged Flarks in the Boreal Aapa-Type Mire" Microorganisms 10, no. 1: 170. https://doi.org/10.3390/microorganisms10010170

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