A5102753545- Soil Carbon and Nitrogen Dynamics
- Plant nutrient uptake and metabolism
- Microbial Community Ecology and Physiology
- Microbial Metabolic Engineering and Bioproduction
- Legume Nitrogen Fixing Symbiosis
- Biofuel production and bioconversion
- Phosphorus and nutrient management
- Plant Micronutrient Interactions and Effects
- biodegradable polymer synthesis and properties
- Peatlands and Wetlands Ecology
- Weed Control and Herbicide Applications
- Clay minerals and soil interactions
- Microbial Fuel Cells and Bioremediation
- Microplastics and Plastic Pollution
- Entomopathogenic Microorganisms in Pest Control
- Enzyme Production and Characterization
- Rice Cultivation and Yield Improvement
- Soil and Water Nutrient Dynamics
- Agroforestry and silvopastoral systems
- Isotope Analysis in Ecology
- Mycorrhizal Fungi and Plant Interactions
- Iron oxide chemistry and applications
- Arsenic contamination and mitigation
- Water-Energy-Food Nexus Studies
- Cancer Research and Treatments
University of Tübingen
2022-2025
University of Göttingen
2021-2023
Abstract The concept of biomass growth is central to microbial carbon (C) cycling and ecosystem nutrient turnover. Microbial usually assumed grow by cellular replication, despite microorganisms’ capacity increase synthesizing storage compounds. Resource investment in allows microbes decouple their metabolic activity from immediate resource supply, supporting more diverse responses environmental changes. Here we show that C the form triacylglycerides (TAGs) polyhydroxybutyrate (PHB)...
The phospholipid fatty acid (PLFA) composition of soils was analysed at three poplar-based silvo-arable systems and one willow-based silvo-grassland alley agroforestry system in Central Germany. objective to analyse tree row effects on the PLFA main fungal bacterial groups. groups were BAM (Basidiomycota + Ascomycota Mucoromycota) AMF (Arbuscular Mycorrhizal Fungi). Gram-negative, Firmicutes, Actinobacteria. total content varied between 53 170 nmol g−1 soil. Total microbial biomass carbon...
Microbial intracellular storage is key to defining microbial resource use strategies and could contribute carbon (C) nutrient cycling. However, little attention has been devoted the role of in soil processes, particular from a theoretical perspective. Here we fill this gap by integrating dynamics into microbially explicit C cycling model. Two ecologically relevant modes are considered: reserve storage, which elements routed compartment proportion their uptake rate, surplus excess...
The physical colocation of decomposers and substrates has been proposed as being a determining factor microbial metabolism in soil, which is also greatly modulated by environmental temperature. Moreover, spatial heterogeneity insoluble hypothesized to favor the fungal energy channel, fungi have well-developed capacity translocate resources within their mycelia thus overcoming local resource limitation. Here, effects warming, substrate heterogeneity, and translocation on indicated...
Introduction For low-fertile and degraded soils of sub-Saharan Africa, nitrogen (N) is often the most growth-limiting factor restricting crop yields. The often-suggested exploitation advantageous rhizosphere traits such as enzyme secretion and/or symbiosis with arbuscular mycorrhizal fungi (AMF) remains to be validated a potential strategy overcome N limitation, especially when deficiency co-occurs further abiotic stresses water scarcity. Methods Three sorghum genotypes were cultivated in...
Abstract Aims Visualization of enzymatic activity links microbial functioning to localization in heterogeneous soil habitats. To assess reactions thin layer at the microscopic level, we developed a micro-zymography approach and tested it by visualization potential phosphomonoesterase for aggregates collected from rhizosphere Zea mays L. Methods We evaluated applying fluorogenically-labeled substrate i) on individual freshly sampled rhizosphere, ii) layers (≈ 500 µm) saturated with dynamics...
Abstract The concept of microbial biomass growth is central to carbon (C) cycling and ecosystem nutrient turnover. Growth usually assumed occur by cellular replication, despite microorganisms’ capacity increase synthesizing storage compounds. Here we examined whether C in triacylglycerides (TAGs) polyhydroxybutyrate (PHB) contribute significantly growth, under contrasting conditions availability complementary supply. Together these compounds accounted for 19.1 ± 1.7% 46.4 8.0% extractable...
Microbial community dynamics and utilization of rhizodeposits synthetic urine in grassland soils. Manisha Koirala 1, Yang Ding 2, Callum C. Banfield2, Michaela A. Dippold2 1 Biogeochemistry Agroecosystems, University Göttingen, 37077 Germany 2 Geo-Biosphere Interactions, Tübingen, 72076 Germany Soil microbes thrive a wide range nutrient inputs cope with an imbalanced supply resources by adjusting their strategies. In grasslands, animal...
Nitrification contributes to soil acidification, and therefore strongly irreversibly the neutralization of inorganic carbon (SIC), e.g., CaCO3, CO2 emissions. released by nitrogen (N) fertilizer-induced acidification is partitioned between solid (CaCO3 re-precipitation), liquid (dissolved HCO3-) gaseous (CO2) phases. Therefore, quantifying effect N fertilization on SIC-originated emissions an enormous challenge. Here, 14C-labeled CaCO3 was used as a model SIC compound trace its products,...
<p>A diverse range of soil microorganisms accumulate energy to secure their future needs under resource fluctuation or deficiency. Microbial intracellular storage can substantially mediate the stress variability across time, thereby supporting growth and reproduction. is well known in industrial applications pure culture conditions, yet few studies address its importance soil. To evaluate how widespread microbial soil, we quantified contents two compounds, polyhydroxybutyrate...
<p>Nitrogen (N) availability is a main constraint to plant productivity, especially when vegetation relies largely on subsoils, which contain considerable N resources but in low availability. Rhizodeposition can promote cycling by stimulating microbial growth and activity thus induces the release of mineral-bound nutrients accelerates decomposition soil organic matter (SOM). However, many specific processes how root exudates interact with distinct forms altering their subsoil...
<p>Enzymes are secreted by microbial cells into the soil to catalyze acquisition of carbon or nutrients like nitrogen and phosphorus from organic matter. Apart microorganisms fauna, roots also secrete enzymes mobilize nutrient pool. Thus, living plants considered main sources in agroecosystems. To understand how exo-enzymes distributed microhabitats, whether enzymatic activity is higher solution on particle surfaces, we visualized at corresponding scale. Visualization links...