Publications by authors named "Gianna L Marschmann"
Article Synopsis
- Soil microbiomes are made up of many different types of tiny living things (microbes) that help with things like plant growth and nutrient cycling.
- Scientists are using information from the genes of these microbes to understand how they behave and interact when they break down different materials in the soil.
- By studying these interactions, researchers found out that some bacteria can grow slower but use carbon more efficiently, which helps keep important nutrients in the soil.
Article Synopsis
- * The interactions between living microbes, dead microbial cells, soil fauna, and plants significantly influence microbial metabolic functions and the cycling of organic matter in the soil.
- * Advances in genomic technologies are enabling researchers to analyze microbial traits, offering insights that improve biogeochemical models and help predict how ecosystems will respond to climate change.
Current knowledge of the mechanisms driving soil organic matter (SOM) turnover and responses to warming is mainly limited to surface soils, although over 50% of global soil carbon is contained in subsoils. Deep soils have different physicochemical properties, nutrient inputs, and microbiomes, which may harbor distinct functional traits and lead to different SOM dynamics and temperature responses. We hypothesized that kinetic and thermal properties of soil exoenzymes, which mediate SOM depolymerization, vary with soil depth, reflecting microbial adaptation to distinct substrate and temperature regimes.
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