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Caldifarcimen microaerophilum gen. nov., sp. nov., a facultatively anaerobic, thermophilic bacterium of a novel bacterial phylum, Caldifarciminota phyl. nov., formerly called candidate phylum WOR-3, description of Caldifarciminaceae fam. nov., Caldifarciminales ord. nov. and Caldifarciminia classis nov.

A facultatively anaerobic, thermophilic, Gram-negative bacterium, strain sy37T, isolated from a deep-sea hydrothermal field and belonging to the candidate phylum WOR-3, was characterized in detail. Th...

Bioaccumulation of trace elements by Leach's storm-petrels (Hydrobates leucorhous) in the North and South Atlantic Ocean during the non-breeding period.

Trace elements occur naturally in the environment, but anthropogenic activities can amplify their release, increasing exposure and bioaccumulation in marine predators such as seabirds. Mercury (Hg) in...

Bioinspired Antimicrobial Strategy: An Extremophile Deep Sea Peptide to Combat Cystic Fibrosis Infections Caused by Pseudomonas aeruginosa and Staphylococcus aureus.

Cystic fibrosis (CF)-associated lung infections caused by Pseudomonas aeruginosa (P. aeruginosa) and Staphylococcus aureus (S. aureus) remain difficult to treat due to multidrug resistance and the red...

The dynamic mesoscale sink and source niches for eukaryotic phytoplankton in a subtropical gyre.

By tracking the water mass histories of genetic samples, we investigated the biophysical dynamics shaping eukaryotic phytoplankton populations in a nutrient-deplete subtropical gyre, where cyanobacter...

Seasonal connectivity of microbes and carbohydrates between ocean, atmosphere, and cryosphere in Kongsfjorden (Svalbard, Arctic Ocean).

The coupling between ocean and atmosphere across the strong seasonal gradients in the Arctic is poorly understood. Here, we explored the microbial and glycobiological connectivity between the surface ...

Multi-Omic Assessment of Microbial Communities and Their Polyketide Biosynthetic Potential Across Abyssal Sediments.

Microbially-derived polyketides include some of today's most valuable medicines, yet their discovery has focused on a narrow subset of Earth's microbial biodiversity. Although understudied biomes such...

Manganese(II) Oxidation and Mineralization by the Deep-Sea Bacterium Shewanella piezotolerans WP3.

Microbially mediated manganese (Mn) oxidation is a key process in the biogeochemical cycling of Mn. While Shewanella is widely recognized for its metal-reducing capabilities, recent studies have shown...

Unique N-acetyl-L-glutamate kinase of Prasinoderma coloniale: new features of an old enzyme.

N-Acetyl-L-glutamate kinase of Prasinoderma coloniale is an example of an evolutionary hack that allows this alga survival without the protein PII. N-Acetyl-L-glutamate kinase (NAGK) catalyzes the pho...

Evidence for the connectivity of antibiotic resistance genes between seamount and coastal environments.

Antibiotic resistance genes (ARGs) have drawn global attention and are ubiquitously detected in marine environments. Seamounts, prominent seafloor features with high biodiversity, may be hotspots for ...

Widespread Association of Ciliates Colonizing Gills of Shrimps Inhabiting Vents and Seeps Across the Pacific Ocean.

Bacterial symbiosis is well-documented in chemosynthesis-based ecosystems, but associations with microeukaryotes remain overlooked. In this study, using scanning electron microscopy and 18S rDNA barco...

Viral communities from long-term anaerobic alkane-oxidizing enrichments encode predicted cell surface adhesion functions.

The anaerobic oxidation of methane and higher C2+ alkanes is a dominant metabolism within hydrocarbon-rich deep-sea sediments and is largely mediated by alkane-oxidizing archaea in metabolic partnersh...

Multi-omics and cultivation reveal laminarin-degrading PVC bacteria in the deep sea.

The deep sea is home to a vast and largely unexplored microbial biosphere, along with large amounts of complex organic matter (COM). However, the functional capacity of the deep-sea microbiome to meta...

Sharpness-Aware Minimization (SAM) Improves Classification Accuracy of Bacterial Raman Spectral Data Enabling Portable Diagnostics

Antimicrobial resistance is expected to claim 10 million lives per year by 2050, and resource-limited regions are most affected. Raman spectroscopy is a novel pathogen diagnostic approach promising ra...

Comparative analysis of microbial diversity and pathogenic potential in marine litter reveals timber as a key reservoir in sandy beaches ecosystems.

Many materials create new habitats for microbial colonization and the persistence of potentially pathogenic bacteria. Despite this, comparative studies addressing the microbial diversity and pathogeni...

Methanotrophic community structure and metabolic potential in the sulfate-methane transition zone of the ARAON mounds, Arctic Chukchi Sea.

Anaerobic oxidation of methane (AOM) mediated by archaea is a pivotal process for methane consumption in gas seepage-associated sediments. Despite its importance in regulating methane flux, the ecolog...

Oxygen Minimum Zone and Organic Carbon Structure Benthic Prokaryotic Communities and Metabolism in Warm Deep-Red Sea Sediments.

Benthic prokaryotic communities in deep-sea sediments remain poorly studied. They are constrained by organic matter availability and oxygenation in warm deep-sea ecosystems. Here, we investigated bent...

Bioactive pigment production by marine bacteria from Colombian estuarine and deep-sea environments.

Molecular basis of N2 fixation in a hyperthermophilic archaeon.

Exploring the natural diversity of phylogenetically distant nitrogenases is crucial for gaining new insights into the mechanism of atmospheric N2 fixation and unlocking biotechnological developments i...

Reconstructing historical patterns in bacterial communities from deep-sea sediments in the western Mediterranean: impacts of metal pollution and climatic variation.

Bacteria are a major component of deep-sea communities. Mesoscale changes were observed in the deep western Mediterranean by analysing deposited DNA in four sediment cores from SE Barcelona, at 1050 m...

Infrared stimulation of mitochondrial metabolism in deep-sea yeast expands the energetic framework of hydrothermal ecosystems.

Deep-sea hydrothermal vents are archetypal chemosynthetic ecosystems, yet the intense geothermal near-infrared (NIR) radiation emitted by black smoker chimneys remains a largely unexplored environment...