Metagenome-Assembled Genome Sequences of Three Uncultured
            <i>Planktomarina</i>
            sp. Strains from the Northeast Atlantic Ocean

Marques, Matilde; Borges, Nuno; Silva, Sandra Godinho; Rocha, Ulisses Nunes da; Lago‐Lestón, Asunción; Keller‐Costa, Tina; Costa, Rodrigo

doi:10.1128/mra.00127-20

Cited by 6 publications

(2 citation statements)

References 20 publications

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“…A unique characteristic of the community structure during August was the absence of the genus Planktomarina. Species in this genus are dominant members of the Roseobacter clade and may play a vital role in the decomposition of organic matter that is produced by phytoplankton [64]. Vitamin B is a vital biotin for host algae.…”

Section: Correlations Of Different Prokaryotes With Species Responsib...mentioning

confidence: 99%

Seasonal and Spatial Variability in the Bacterial Diversity in Haizhou Bay in the Southern Yellow China Sea

Zhao,

Zhan,

Yan

et al. 2023

Diversity

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Harmful algae blooms (HABs) can have significant adverse effects on coastal ecosystems and aquaculture resiliency. We collected samples from March to August at eight different stations in Haizhou Bay (China), a region with a high frequency of HABs, and used Illumina Novaseq high-throughput sequencing and multivariate statistical analysis to characterize the bacterial communities and their relationships with different environmental factors. We identified 27 phyla, 49 classes, 158 orders, 294 families, and 522 genera. Gammaproteobacteria, Alphaproteobacteria, Bacteroidia, Acidimicrobiia, Bacilli, Actinobacteria, Cyanobacteria, Clostridia, and Acidobacteria were the most abundant classes, and Acidobacteria, Bacteroidetes, Firmicutes, Actinobacteria, Chloroflexi, Proteobacteria, and Cyanobacteria were the keystone phyla. Based on the Mantel test and redundancy analysis, temperature was the main environmental factor affecting the structure of the bacterial communities, followed by silicate, dissolved organic phosphorus (DOP), and dissolved oxygen (DO). Among the genera with high OTU abundance, Nautella was co-related positively with DO and negatively with salinity; Planktomarina was co-related positively with salinity and negatively with nitrate and nitrite. Certain families (Flavobacteriaceae, Rhodobacteraceae, and Clade_I (SAR11 clade)) and genera (Methylophaga, Alteromonas, Oleiphilus, Marinobacter, Bacillus, Nautella, and Vibrio) had associations with phytoplankton species that were responsible for HABs. This research provides new insights into the characteristics of the bacterial communities that occur in coastal areas that have HABs and provides detailed descriptions of the spatial and temporal changes in the structure of these communities.

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Section: Correlations Of Different Prokaryotes With Species Responsib...mentioning

confidence: 99%

Seasonal and Spatial Variability in the Bacterial Diversity in Haizhou Bay in the Southern Yellow China Sea

Zhao,

Zhan,

Yan

et al. 2023

Diversity

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“…To the best of our knowledge, there are less than 20 reports on MAGs from oceanic habitats, and most of them report on prokaryotic genome reconstructions [ 14 – 18 ]. However, Delmont et al [ 19 ] assembled more than 700 eukaryotic genomes from Tara Oceans samples.…”

Section: Introductionmentioning

confidence: 99%

Metagenome-assembled genomes of phytoplankton microbiomes from the Arctic and Atlantic Oceans

et al. 2022

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Background Phytoplankton communities significantly contribute to global biogeochemical cycles of elements and underpin marine food webs. Although their uncultured genomic diversity has been estimated by planetary-scale metagenome sequencing and subsequent reconstruction of metagenome-assembled genomes (MAGs), this approach has yet to be applied for complex phytoplankton microbiomes from polar and non-polar oceans consisting of microbial eukaryotes and their associated prokaryotes. Results Here, we have assembled MAGs from chlorophyll a maximum layers in the surface of the Arctic and Atlantic Oceans enriched for species associations (microbiomes) with a focus on pico- and nanophytoplankton and their associated heterotrophic prokaryotes. From 679 Gbp and estimated 50 million genes in total, we recovered 143 MAGs of medium to high quality. Although there was a strict demarcation between Arctic and Atlantic MAGs, adjacent sampling stations in each ocean had 51–88% MAGs in common with most species associations between Prasinophytes and Proteobacteria. Phylogenetic placement revealed eukaryotic MAGs to be more diverse in the Arctic whereas prokaryotic MAGs were more diverse in the Atlantic Ocean. Approximately 70% of protein families were shared between Arctic and Atlantic MAGs for both prokaryotes and eukaryotes. However, eukaryotic MAGs had more protein families unique to the Arctic whereas prokaryotic MAGs had more families unique to the Atlantic. Conclusion Our study provides a genomic context to complex phytoplankton microbiomes to reveal that their community structure was likely driven by significant differences in environmental conditions between the polar Arctic and warm surface waters of the tropical and subtropical Atlantic Ocean.

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Fjords of the western and northern regions of Svalbard harbour distinct bacterioplankton community structures

Venkatachalam

Gopinath

Krishnan

2022

World J Microbiol Biotechnol

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Metagenome-Assembled Genome Sequences of Three Uncultured Planktomarina sp. Strains from the Northeast Atlantic Ocean

Cited by 6 publications

References 20 publications

Seasonal and Spatial Variability in the Bacterial Diversity in Haizhou Bay in the Southern Yellow China Sea

Seasonal and Spatial Variability in the Bacterial Diversity in Haizhou Bay in the Southern Yellow China Sea

Metagenome-assembled genomes of phytoplankton microbiomes from the Arctic and Atlantic Oceans

Fjords of the western and northern regions of Svalbard harbour distinct bacterioplankton community structures

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