Publications by authors named "Nicole Adam-Beyer"
Article Synopsis
- The study investigates microbial ecosystems at recently discovered deep-sea hydrothermal vents along the Central and South-East Indian Ridge, focusing on various samples from six vent fields.
- A significant number of uncultured and unspecified bacterial species were found in hydrothermal fluids and massive sulfides, while sediments lacked chemosynthetic bacteria and were dominated by low-abundance bacterial groups.
- The research highlights the need for further studies on the metabolic functions of these uncultured microorganisms to understand their ecological roles and predict the impacts of future mining activities on these ecosystems.
Article Synopsis
- Human activities are rapidly changing the ocean environment, leading to issues like ocean warming and deoxygenation, which negatively impact biodiversity and natural processes.
- * In coastal areas, the breakdown of organic matter produces harmful gases like hydrogen sulfide and methane, which can have serious environmental and socio-economic impacts.
- * At the Boknis Eck site in the Baltic Sea, researchers found that rising temperatures and low oxygen conditions increase the production and consumption of these gases, indicating a shift in the microbial community that helps manage these compounds.
Article Synopsis
- Iron (Fe) is a crucial trace element for life, but its availability in the ocean can be very limited or extremely high, which affects microbial communities differently.* -
- Experiments show that while certain microbes like Campylobacterota thrive at lower Fe concentrations, a high concentration of 10 mM leads to dominance by the SUP05 clade, which is adapted to high-Fe environments.* -
- The study highlights that hydrothermal microbes can produce Fe-binding ligands that help with Fe uptake in low concentrations and detoxification in high concentrations, suggesting their role in maintaining Fe in solution despite toxic conditions.*
Activity-Based Screening of Metagenomic Fosmid Libraries for Hydrogen-Uptake Enzymes.
Methods Mol Biol
November 2022
Here, we outline how to identify hydrogenase enzymes from metagenomic fosmid libraries through an activity-based screening approach. A metagenomic fosmid library is constructed in E. coli and the fosmids are transferred into a hydrogenase deletion mutant of Shewanella oneidensis MR-1 (ΔhyaB) via triparental mating.
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