ArticleMicrobiome2019
Genomic and metatranscriptomic analyses of carbon remineralization in an Antarctic polynya.
Article in Microbiome, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 11 papers.
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11 citing papers in PubMed, 27 citations in OpenAlex.
- Linking composition and function: a two-year metatranscriptomic study of microbial adaptation in an industrial wastewater treatment plant.FEMS microbiology ecology · 2026Article
- Water mass specific genes dominate the Southern Ocean microbiome.Nature communications · 2026Article
- Isolation and characterization of Polaribacter sargassicola sp. nov. and Algibacter ulvanivorans sp. nov.: two novel species with ability to degrade algal polysaccharides.Antonie van Leeuwenhoek · 2025Article
- Metatranscriptomes of activated sludge microbiomes from saline wastewater treatment plant.Scientific data · 2025Article
- Dynamics of microbial communities in Western Antarctic Peninsula waters shaped primarily by the biological interactions.Frontiers in microbiology · 2025Article
- Transcriptomic Insights into Archaeal Nitrification in the Amundsen Sea Polynya, Antarctica.Journal of microbiology (Seoul, Korea) · 2023Article
- Discovery of an Abundant Viral Genus in Polar Regions through the Isolation and Genomic Characterization of a New Virus againstApplied and environmental microbiology · 2023Article
- Biogeography of Southern Ocean prokaryotes: a comparison of the Indian and Pacific sectors.Environmental microbiology · 2022Article
- Influence of dragon bamboo with different planting patterns on microbial community and physicochemical property of soil on sunny and shady slopes.Journal of microbiology (Seoul, Korea) · 2020Article
- Microbial community analysis using high-throughput sequencing technology: a beginner's guide for microbiologists.Journal of microbiology (Seoul, Korea) · 2020Article
- Correction to: Genomic and metatranscriptomic analyses of carbon remineralization in an Antarctic polynya.Microbiome · 2019Article
Corrections and comments
- Erratum issued
Authors and funding
16 authors at 11 institutions in 4 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundPolynyas in the Southern Ocean are regions of intense primary production, mainly by Phaeocystis antarctica. Carbon fixed by phytoplankton in the water column is transferred to higher trophic levels, and finally, to the deep ocean. However, in the Amundsen Sea, most of this organic carbon does not reach the sediment but is degraded in the water column due to high bacterial heterotrophic activity.
resultsWe reconstructed 12 key bacterial genomes from different phases of bloom and analyzed the expression of genes involved in organic carbon remineralization. A high correlation of gene expression between the peak and decline phases was observed in an individual genome bin-based pairwise comparison of gene expression. Polaribacter belonging to Bacteroidetes was found to be dominant in the peak phase, and its transcriptional activity was high (48.9% of the total mRNA reads). Two dominant Polaribacter bins had the potential to utilize major polymers in P. antarctica, chrysolaminarin and xylan, with a distinct set of glycosyl hydrolases. In the decline phase, Gammaproteobacteria (Ant4D3, SUP05, and SAR92), with the potential to utilize low molecular weight-dissolved organic matter (LMW-DOM) including compatible solutes, was increased. The versatility of Gammaproteobacteria may contribute to their abundance in organic carbon-rich polynya waters, while the SAR11 clade was found to be predominant in the sea ice-covered oligotrophic ocean. SAR92 clade showed transcriptional activity for utilization of both polysaccharides and LMW-DOM; this may account for their abundance both in the peak and decline phases. Ant4D3 clade was dominant in all phases of the polynya bloom, implicating the crucial roles of this clade in LMW-DOM remineralization in the Antarctic polynyas.
conclusionsGenomic reconstruction and in situ gene expression analyses revealed the unique metabolic potential of dominant bacteria of the Antarctic polynya at a finer taxonomic level. The information can be used to predict temporal community succession linked to the availability of substrates derived from the P. antarctica bloom. Global warming has resulted in compositional changes in phytoplankton from P. antarctica to diatoms, and thus, repeated parallel studies in various polynyas are required to predict global warming-related changes in carbon remineralization.
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