Climate warming threatens Arctic permafrost with seasonal cycles of freezing and thawing. Arctic soil microorganisms regulate carbon stocks and green house gas exchanges with the atmosphere, yet their precise seasonal growth and dormancy dynamics, …
Phosphorus (P) recycling in seawater is critical for maintaining nutrient availability and marine primary productivity. This process is catalyzed by alkaline phosphatases enzymes, which hydrolyze dissolved organic phosphorus (DOP) compounds, …
Subsurface microbiology is at a crossroads, evolving from asking ‘who’s home’ to seeking clarity on microbes’ functionality and the key processes that constrain subsurface life. Importantly, the processes subsurface microorganisms mediate are central …
Denitrification accounts for a substantial nitrogen loss from environmental systems, shifting microbial composition and impacting other biogeochemical cycles. In Antarctica, rising temperatures cause increased organic matter deposition in marine …
Most microbial taxa on Earth remain uncultivated, limiting our ability to study their physiology, ecology, and roles in environmental processes. Although metagenome-assembled genomes (MAGs) have expanded access to uncultured phylogenetic diversity, …
Participation in authentic scientific research has been shown to greatly benefit undergraduate students, both in terms of perception of science and knowledge of sci- entific concepts. We define authentic scientific research as projects in which …
Microbial exoenzymes—extracellular enzymes secreted to degrade complex organic polymers—29 are essential for recycling carbon and nutrients, thus sustaining primary productivity in today’s oceans1. Yet, their evolutionary history and role in shaping …
Permafrost soil is characterized by prolonged freezing conditions. Thermophilic microbes have been discovered in various permanently cold environments, including permafrost, where they can persist for extended periods. The reason for this apparent …