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Old but not ancient: Rock-leached organic carbon drives groundwater microbiomes.
Sci Total Environ
December 2024
Aquatic Geomicrobiology, Institute of Biodiversity, Friedrich Schiller University, Jena, Germany; Cluster of Excellence Balance of the Microverse, Friedrich Schiller University Jena, Jena, Germany; German Center for Integrative Biodiversity Research (iDiv) Halle-Jena_Leipzig, Germany. Electronic address:
More than 90% of earth's microbial biomass resides in the continental subsurface, where sedimentary rocks provide the largest source of organic carbon (C). While many studies indicate microbial utilization of fossil C sources, the extent to which rock-organic C is driving microbial activities in aquifers remains largely unknown. Here we incubated oxic and anoxic groundwater with crushed carbonate rocks from the host aquifer and an outcrop rock of the unsaturated zone characterized by higher organic C content, and compared the natural abundance of radiocarbon (C) of available C pools and microbial biomarkers.
View Article and Find Full Text PDFExploring the biosynthesis potential of permafrost microbiomes.
Environ Microbiome
November 2024
Department of Biotechnology and Biomedicine, Technical University of Denmark, Lyngby, Denmark.
Background: Permafrost microbiomes are of paramount importance for the biogeochemistry of high latitude soils and while endemic biosynthetic domain sequences involved in secondary metabolism have been found in polar surface soils, the biosynthetic potential of permafrost microbiomes remains unexplored. Moreover, the nature of these ecosystems facilitates the unique opportunity to study the distribution and diversity of biosynthetic genes in relic DNA from ancient microbiomes. To explore the biosynthesis potential in permafrost, we used adenylation (AD) domain sequencing to evaluate non-ribosomal peptide (NRP) production in permafrost cores housing microbiomes separated at kilometer and kiloyear scales.
View Article and Find Full Text PDFAntibacterial and therapeutic potential of historic deposits of silesian healing clay - terra sigillataSilesiaca.
J Ethnopharmacol
January 2025
Department of Biostructure and Animal Physiology, Wrocław University of Environmental and Life Sciences, Kożuchowska 1/3, 51-631 Wrocław, Poland. Electronic address:
Ethnopharmacological Relevance: The increasing evolution of pathogen resistance is a global problem that requires novel solutions. Recently, an increased interest in ethnomedicinal sources can be observed in the derivation of new medicines. The return to traditional medicinal formulations handed down for generations is being followed, but it is necessary to revise them again, taking into account the generally accepted research protocol.
View Article and Find Full Text PDFThe role of emerging elites in the formation and development of communities after the fall of the Roman Empire.
Proc Natl Acad Sci U S A
September 2024
Department of Ecology and Evolution, Stony Brook University, Stony Brook, NY 11794.
Article Synopsis
- Elites were very important in shaping Europe after the Roman Empire fell, influencing both big and small communities during the Early Middle Ages.
- Researchers studied a community in Italy from the 6th to 8th centuries and found that it was made up of related elite families that grew into one big family over time.
- This community was diverse, welcoming different people as it developed, showing that powerful leaders could bring together various backgrounds instead of just sticking to their own.
Illuminating the coevolution of photosynthesis and Bacteria.
Proc Natl Acad Sci U S A
June 2024
Department of Life Science and Biotechnology, The National Institute of Advanced Industrial Science and Technology, Ibaraki 305-0817, Japan.
Article Synopsis
- The study explores how life utilizing light energy changed Earth's biology and carbon dynamics, highlighting the importance of photosynthesis in shaping today's biosphere.
- It uses a comprehensive phylogenetic analysis of over 10,000 bacterial genomes to identify the evolutionary connections between bacteria, light metabolism, and carbon fixation.
- The findings reveal that all current light-metabolizing organisms trace back to a common ancestor, an ancient non-oxygen-producing phototroph, and outline the evolution of light metabolism leading to the rise of oxygen-generating organisms and Cyanobacteria.
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