Moritz Buck
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View article: Aquatic fungal diversity assessment through metagenomics is still limited to current databases
Aquatic fungal diversity assessment through metagenomics is still limited to current databases Open
Fungi play essential roles across ecosystems, yet their diversity in aquatic environments remains poorly understood compared to terrestrial systems. To address this gap, we analyzed metagenomes from 26 lakes in the boreal and subarctic zon…
View article: A global deep terrestrial biosphere core microbiome
A global deep terrestrial biosphere core microbiome Open
The deep biosphere encompasses life beneath the Earth’s surface and constitutes a substantial portion of the planet’s microbial biomass. This study analyzed nucleic acid datasets from low-carbon and low-energy deep terrestrial subsurface g…
View article: Browning and mining increase the nitrous oxide production in sediments of large boreal lakes during winter
Browning and mining increase the nitrous oxide production in sediments of large boreal lakes during winter Open
There is limited knowledge on the N (nitrogen) cycling in winter, on the role of organic matter quality on N cycling, and on the microbes involved.We studied Lake Viinijärvi and Lake Höytiäinen, large boreal lakes in Finland…
View article: Continental scientific drilling and microbiology: (extremely) low biomass in bedrock of central Sweden
Continental scientific drilling and microbiology: (extremely) low biomass in bedrock of central Sweden Open
Scientific drilling expeditions offer a unique opportunity to characterize microbial communities in the subsurface that have long been isolated from the surface. With subsurface microbial biomass being low in general, biological contaminat…
View article: Novel candidate taxa contribute to key metabolic processes in Fennoscandian Shield deep groundwaters
Novel candidate taxa contribute to key metabolic processes in Fennoscandian Shield deep groundwaters Open
The continental deep biosphere contains a vast reservoir of microorganisms, although a large proportion of its diversity remains both uncultured and undescribed. In this study, the metabolic potential (metagenomes) and activity (metatransc…
View article: Overview of the MOSAiC expedition: Ecosystem
Overview of the MOSAiC expedition: Ecosystem Open
The international and interdisciplinary sea-ice drift expedition “The Multidisciplinary drifting Observatory for the Study of Arctic Climate” (MOSAiC) was conducted from October 2019 to September 2020. The aim of MOSAiC was to study the in…
View article: Geographic population structure and distinct intra-population dynamics of globally abundant freshwater bacteria
Geographic population structure and distinct intra-population dynamics of globally abundant freshwater bacteria Open
Implications of geographic separation and temporal dynamics on the evolution of free-living bacterial species are widely unclear. However, the vast amount of metagenome sequencing data generated during the last decades from various habitat…
View article: Comment on bg-2023-147
Comment on bg-2023-147 Open
Abstract. Scientific drilling expeditions offer a unique opportunity to characterize the microbial communities in the subsurface that have been long-term isolated from the surface. With subsurface microbial biomass being low in general, bi…
View article: Continental scientific drilling and microbiology: (extremely) low biomass in crystalline bedrock of central Sweden
Continental scientific drilling and microbiology: (extremely) low biomass in crystalline bedrock of central Sweden Open
Scientific drilling expeditions offer a unique opportunity to characterize the microbial communities in the subsurface that have been long-term isolated from the surface. With subsurface microbial biomass being low in general, biological c…
View article: Geographic population structure and distinct population dynamics of globally abundant freshwater bacteria
Geographic population structure and distinct population dynamics of globally abundant freshwater bacteria Open
Geographic separation is a principal factor for structuring populations of macroorganisms, with important consequences for evolution, by means of processes such as allopatric speciation. For free-living prokaryotes, implications of geograp…
View article: Exploring environmental intra‐species diversity through non‐redundant pangenome assemblies
Exploring environmental intra‐species diversity through non‐redundant pangenome assemblies Open
At the genome level, microorganisms are highly adaptable both in terms of allele and gene composition. Such heritable traits emerge in response to different environmental niches and can have a profound influence on microbial community dyna…
View article: Linking prokaryotic genome size variation to metabolic potential and environment
Linking prokaryotic genome size variation to metabolic potential and environment Open
While theories and models have appeared to explain genome size as a result of evolutionary processes, little work has shown that genome sizes carry ecological signatures. Our work delves into the ecological implications of microbial genome…
View article: Linking prokaryotic genome size variation to metabolic potential and environment
Linking prokaryotic genome size variation to metabolic potential and environment Open
While theories and models have appeared to explain genome size as a result of evolutionary processes, little work has shown that genome sizes carry ecological signatures. Our work delves into the ecological implications of microbial genome…
View article: Multiomics in the central Arctic Ocean for benchmarking biodiversity change
Multiomics in the central Arctic Ocean for benchmarking biodiversity change Open
Multiomics approaches need to be applied in the central Arctic Ocean to benchmark biodiversity change and to identify novel species and their genes. As part of MOSAiC, EcoOmics will therefore be essential for conservation and sustainable b…
View article: Expression Levels of <i>hgcAB</i> Genes and Mercury Availability Jointly Explain Methylmercury Formation in Stratified Brackish Waters
Expression Levels of <i>hgcAB</i> Genes and Mercury Availability Jointly Explain Methylmercury Formation in Stratified Brackish Waters Open
Neurotoxic methylmercury (MeHg) is formed by microbial methylation of inorganic divalent Hg (HgII) and constitutes severe environmental and human health risks. The methylation is enabled by hgcA and hgcB genes, but it is not known if the a…
View article: A consensus protocol for the recovery of mercury methylation genes from metagenomes
A consensus protocol for the recovery of mercury methylation genes from metagenomes Open
Mercury (Hg) methylation genes ( hgcAB ) mediate the formation of the toxic methylmercury and have been identified from diverse environments, including freshwater and marine ecosystems, Arctic permafrost, forest and paddy soils, coal‐ash a…
View article: mOTUpan: a robust Bayesian approach to leverage metagenome-assembled genomes for core-genome estimation
mOTUpan: a robust Bayesian approach to leverage metagenome-assembled genomes for core-genome estimation Open
Recent advances in sequencing and bioinformatics have expanded the tree of life by providing genomes for uncultured environmentally relevant clades, either through metagenome-assembled genomes or through single-cell genomes. While this exp…
View article: A metagenomic view on fungal diversity in freshwater lakes
A metagenomic view on fungal diversity in freshwater lakes Open
Fungi are essential components in a wide range of ecosystems and while major efforts have been spent on disentangling the diversity and functional roles of fungi in terrestrial environments, our knowledge about aquatic fungi is lagging. To…
View article: Exploring intra-species diversity through non-redundant pangenome assemblies
Exploring intra-species diversity through non-redundant pangenome assemblies Open
At the genome level, microorganisms are highly adaptable both in terms of allele and gene composition. Such heritable traits emerge in response to different environmental niches and can have a profound influence on microbial community dyna…
View article: Taxonomic and functional diversity of aquatic heterotrophs is sustained by dissolved organic matter chemodiversity
Taxonomic and functional diversity of aquatic heterotrophs is sustained by dissolved organic matter chemodiversity Open
Dissolved organic matter (DOM) is ubiquitous in aquatic ecosystems and fundamental for planetary processes and ecosystem functioning. While the link between microbial community composition and heterotrophic utilization of DOM has been reco…
View article: A consensus protocol for the recovery of mercury methylation genes from metagenomes
A consensus protocol for the recovery of mercury methylation genes from metagenomes Open
Mercury methylation genes ( hgcAB) mediate the formation of the toxic methylmercury and have been identified from diverse environments, including freshwater and marine ecosystems, Arctic permafrost, forest and paddy soils, coal-ash amended…
View article: Abundance and expression of<i>hgcAB</i>genes and mercury availability jointly explain methylmercury formation in stratified brackish waters
Abundance and expression of<i>hgcAB</i>genes and mercury availability jointly explain methylmercury formation in stratified brackish waters Open
Neurotoxic methylmercury (MeHg) is formed by microbial methylation of inorganic divalent Hg (Hg II ) and constitutes severe environmental and human health risks. The methylation is enabled by hgcA and hgcB genes, but it is not known if the…
View article: A Genomic Perspective Across Earth’s Microbiomes Reveals That Genome Size in Archaea and Bacteria Is Linked to Ecosystem Type and Trophic Strategy
A Genomic Perspective Across Earth’s Microbiomes Reveals That Genome Size in Archaea and Bacteria Is Linked to Ecosystem Type and Trophic Strategy Open
Our view of genome size in Archaea and Bacteria has remained skewed as the data has been dominated by genomes of microorganisms that have been cultivated under laboratory settings. However, the continuous effort to catalog Earth’s microbio…
View article: Methylmercury formation is controlled by mercury speciation and abundance of Hg methylators in stratified brackish waters of Baltic Sea
Methylmercury formation is controlled by mercury speciation and abundance of Hg methylators in stratified brackish waters of Baltic Sea Open
Mercury (Hg) is a global pollutant of significant concern caused largely by its metalloorganic species methylmercury (MeHg).MeHg is a neurotoxin, which can bioaccumulate and biomagnify through food webs, posing threats to human health and …
View article: Oxygen‐deficient water zones in the Baltic Sea promote uncharacterized Hg methylating microorganisms in underlying sediments
Oxygen‐deficient water zones in the Baltic Sea promote uncharacterized Hg methylating microorganisms in underlying sediments Open
Human‐induced expansion of oxygen‐deficient zones can have dramatic impacts on marine systems and its resident biota. One example is the formation of the potent neurotoxic methylmercury (MeHg) that is mediated by microbial methylation of i…
View article: Comprehensive analysis of chemical and biological problems associated with browning agents used in aquatic studies
Comprehensive analysis of chemical and biological problems associated with browning agents used in aquatic studies Open
Inland waters receive and process large amounts of colored organic matter from the terrestrial surroundings. These inputs dramatically affect the chemical, physical, and biological properties of water bodies, as well as their roles as glob…
View article: 16S rRNA gene sequences of <i>Candidatus</i> Methylumidiphilus (<i>Methylococcales</i>), a putative methanotrophic genus in lakes and ponds
16S rRNA gene sequences of <i>Candidatus</i> Methylumidiphilus (<i>Methylococcales</i>), a putative methanotrophic genus in lakes and ponds Open
A putative novel methanotrophic genus, Candidatus Methylumidiphilus ( Methylococcales ), was recently shown to be ubiquitous and one of the most abundant methanotrophic genera in water columns of oxygen-stratified lakes and ponds of boreal…
View article: Candidatus Methylumidiphilus Drives Peaks in Methanotrophic Relative Abundance in Stratified Lakes and Ponds Across Northern Landscapes
Candidatus Methylumidiphilus Drives Peaks in Methanotrophic Relative Abundance in Stratified Lakes and Ponds Across Northern Landscapes Open
Boreal lakes and ponds produce two-thirds of the total natural methane emissions above the latitude of 50° North. These lake emissions are regulated by methanotrophs which can oxidize up to 99% of the methane produced in the sediments and …