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Extremely acidic proteomes and metabolic flexibility in bacteria and highly diversified archaea thriving in geothermal chaotropic brines

Citation
Gutierrez-Preciado et al. (2024).
Names
“Karumarchaeum halophilus” “Abyssiniarchaeum dallolvicinus” “Haloaenigmatarchaeum” “Haloaenigmatarchaeum danakilense” “Abyssiniarchaeum” “Karumarchaeum” “Salsurabacterium abyssinicum” “Salsurabacterium” “Salsurabacteria”
Abstract
Few described archaeal, and fewer bacterial, lineages thrive at salt-saturating conditions, such as solar saltern crystallizers (salinity above 30%-w/v). They accumulate molar K+ cytoplasmic concentrations to maintain osmotic balance ("salt-in" strategy), and have proteins adaptively enriched in negatively charged, acidic amino acids. Here, we analyzed metagenomes and metagenome-assembled genomes (MAGs) from geothermally influenced hypersaline ecosystems with increasing chaotropicity in the Dana

Niche partitioning of the ubiquitous and ecologically relevant NS5 marine group

Citation
Priest et al. (2022). The ISME Journal 16 (6)
Names
“Marisimplicoccus framensis” “Marisimplicoccus” “Marivariicella” “Marivariicella framensis” “Maricapacicella” “Maricapacicella forsetii” “Arcticimaribacter” “Arcticimaribacter forsetii”
Abstract
AbstractNiche concept is a core tenet of ecology that has recently been applied in marine microbial research to describe the partitioning of taxa based either on adaptations to specific conditions across environments or on adaptations to specialised substrates. In this study, we combine spatiotemporal dynamics and predicted substrate utilisation to describe species-level niche partitioning within the NS5 Marine Group. Despite NS5 representing one of the most abundant marine flavobacterial clades

Closed genomes uncover a saltwater species of Candidatus Electronema and shed new light on the boundary between marine and freshwater cable bacteria

Citation
Sereika et al. (2023). The ISME Journal 17 (4)
Names
Electronema halotolerans Electrothrix laxa Electronema Electronema aureum Ts Electrothrix Electrothrix gigas Electrothrix arhusiensis Electrothrix communis Ts
Abstract
AbstractCable bacteria of theDesulfobulbaceaefamily are centimeter-long filamentous bacteria, which are capable of conducting long-distance electron transfer. Currently, all cable bacteria are classified into two candidate genera:CandidatusElectronema, typically found in freshwater environments, andCandidatusElectrothrix, typically found in saltwater environments. This taxonomic framework is based on both 16S rRNA gene sequences and metagenome-assembled genome (MAG) phylogenies. However, most of

Novel taxa of Acidobacteriota implicated in seafloor sulfur cycling

Citation
Flieder et al. (2021). The ISME Journal 15 (11)
Names
Sulfomarinibacter kjeldsenii Ts Sulfomarinibacter Sulfomarinibacteraceae “Polarisedimenticola svalbardensis” “Polarisedimenticola” “Polarisedimenticolaceae” “Polarisedimenticolia” “Polarisedimenticolales”
Abstract
Abstract Acidobacteriota are widespread and often abundant in marine sediments, yet their metabolic and ecological properties are poorly understood. Here, we examined metabolisms and distributions of Acidobacteriota in marine sediments of Svalbard by functional predictions from metagenome-assembled genomes (MAGs), amplicon sequencing of 16S rRNA and dissimilatory sulfite reductase (dsrB) genes and transcripts, and gene expression analyses of tetrathionate-amended microcosms. Acido

Novel taxonomic and functional diversity of bacteria from the upper digestive tract of chicken

Citation
Rios-Galicia et al. (2023).
Names
Limosilactobacillus galli Limosilactobacillus avium Limosilactobacillus pulli “Clostridium anaeroviscerum” Limosilactobacillus viscerum Limosilactobacillus difficilis Ligilactobacillus hohenheimensis Clostridium butanoliproducens
Abstract
AbstractStrategies to increase the production rate of chicken for human consumption alter the natural process of microbial colonisation and the nutritional performance of the animal. The lack of sufficient reference genomes limits the interpretation of sequencing data and restrain the study of complex functions. In this study, 43 strains obtained from crop, jejunum and ileum of chicken were isolated, characterised and genome analysed to observe their metabolic profiles, adaptive strategies and t