Comparative analysis of microbiome inhabiting oxygenated and deoxygenated habitats using V3 and V6 metabarcoding of 16S rRNA gene.

Autor: Bandekar M; Department of Environmental and Biological Sciences, University of Eastern Finland, Joensuu, Kuopio, Finland; Biological Oceanography Division, CSIR-National Institute of Oceanography, Dona Paula, Goa, 403004, India. Electronic address: mandar.bandekar@uef.fi., More KD; Business Development Group, CSIR-National Institute of Oceanography, Dona Paula, Goa, 403004, India., Seleyi SC; Marine Biotechnology Division, National Institute of Ocean Technology, Ministry of Earth Sciences, Chennai, India., Ramaiah N; Biological Oceanography Division, CSIR-National Institute of Oceanography, Dona Paula, Goa, 403004, India., Kekäläinen J; Department of Environmental and Biological Sciences, University of Eastern Finland, Joensuu, Kuopio, Finland., Akkanen J; Department of Environmental and Biological Sciences, University of Eastern Finland, Joensuu, Kuopio, Finland.
Jazyk: angličtina
Zdroj: Marine environmental research [Mar Environ Res] 2024 Jul; Vol. 199, pp. 106615. Date of Electronic Publication: 2024 Jun 18.
DOI: 10.1016/j.marenvres.2024.106615
Abstrakt: We examine how oxygen levels and the choice of 16S ribosomal RNA (rRNA) tags impact marine bacterial communities using Next-Generation amplicon sequencing. Analyzing V3 and V6 regions, we assess microbial composition in both Oxygen minimum zones (OMZ) and non-OMZ (NOMZ) areas in the Arabian Sea (AS) and the Central Indian Ocean basin (CIOB) respectively. Operational taxonomic units (OTUs) at 97% similarity showed slightly higher richness and diversity with V6 compared to V3. Vertical diversity patterns were consistent across both regions. NOMZ showed greater richness and diversity than OMZ. AS and CIOB exhibited significant differences in bacterial community, diversity, and relative abundance at the order and family levels. Alteromonadaceae dominated the OMZ, while Pelagibacteraceae dominated the NOMZ. Synechococcaceae were found exclusively at 250 m in OMZ. Bacteria putatively involved in nitrification, denitrification, and sulfurylation were detected at both sites. Dissolved oxygen significantly influenced microbial diversity at both sites, while seasonal environmental parameters affected diversity consistently, with no observed temporal variation.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 The Author(s). Published by Elsevier Ltd.. All rights reserved.)
Databáze: MEDLINE
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