A5070461106- Soil Carbon and Nitrogen Dynamics
- Microbial Community Ecology and Physiology
- Phytase and its Applications
- Advanced Proteomics Techniques and Applications
- Peatlands and Wetlands Ecology
- Isotope Analysis in Ecology
- Geology and Paleoclimatology Research
- Plant Ecology and Soil Science
- Soil and Water Nutrient Dynamics
- Botany and Plant Ecology Studies
- Gestational Trophoblastic Disease Studies
- Mycorrhizal Fungi and Plant Interactions
- Maternal and fetal healthcare
- Forest Ecology and Biodiversity Studies
- Primary Care and Health Outcomes
- Pregnancy and preeclampsia studies
- Global Health Workforce Issues
- Forest Insect Ecology and Management
- Soil and Unsaturated Flow
- Sexual Differentiation and Disorders
- Iron Metabolism and Disorders
- Global Health and Surgery
- Clay minerals and soil interactions
- Plant responses to elevated CO2
- Genomics and Phylogenetic Studies
University of Vienna
2018-2025
Baylor College of Medicine
2024
German Environment Agency
2022
University of Bayreuth
2016
Microorganisms are critical in mediating carbon (C) and nitrogen (N) cycling processes soils. Yet, it has long been debated whether the underlying biogeochemical cycles affected by composition diversity of soil microbial community or not. The communities can be influenced various environmental factors, which turn known to impact processes. objectives this study were test effects multiple edaphic drivers individually represented as multivariate environment interacting with diversity,...
The ratio of carbon (C) that is invested into microbial growth to organic C taken up known as use efficiency (CUE), which influenced by environmental factors such soil temperature and moisture. How microbes will physiologically react short-term changes not well understood, primarily due methodological restrictions. Here we report on two independent laboratory experiments explore moisture effects physiology (i.e. respiration, growth, CUE, biomass turnover): (i) a experiment with 1-day...
Soil organic matter (SOM) is the dominant reservoir of terrestrial carbon and nitrogen, microbial necromass represents a primary input to it. However, knowledge stabilization mechanisms direct measurements decomposition microbial-derived SOM are lacking. Here we report novel 15N isotope pool dilution approach using labeled amino sugars muropeptides as tracers quantify proteins cell walls, which allows estimate in situ rates SOM. Our results demonstrate that walls recalcitrant soil protein,...
Microbial nitrogen use efficiency (NUE) is the by which microbes allocate organic N acquired to biomass formation relative in excess of microbial demand released through mineralization. NUE thus critical estimate capacity soil retain soils and thereby affects inorganic availability plants ecosystem losses. However, how temperature moisture/O2 affect date not clear. Therefore, two independent incubation experiments were conducted with from three land uses (cropland, grassland forest) on...
Amino sugars and D-amino acid enantiomers are major components of bacterial fungal cell walls (i.e. peptidoglycan chitin) often used as biomarkers microbial residue turnover in soils. However, little is known about the situ decomposition rates wall residues how soil physicochemical properties affect this process. In study, we investigated gross production consumption free amino (glucosamine muramic acid) acids (meso-diaminopimelic acid, l-alanine, d-alanine) by a novel isotope pool dilution...
Deadwood is an important structural component in forest ecosystems and plays a significant role global carbon nutrient cycling. Relatively little known about the formation decomposition of CWD by microbial communities situ factors controlling associated processes. In this study, we intensively analyzed molecular fungal community composition species richness relation to extracellular enzyme activity differences decomposing sapwood heartwood 13 temperate tree (four coniferous nine deciduous...
Proteins constitute the single largest soil organic nitrogen (SON) reservoir and its decomposition drives terrestrial N availability. Protein cleavage by extracellular enzymes is rate limiting step in cycle can be controlled enzyme production or protein availability/stabilization soil. Both controls affected geology land use, as well vulnerable to changes temperature moisture/O2. To explore major of gross depolymerization we sampled six soils from two parent materials (calcareous silicate),...
Depolymerization of high-molecular weight organic nitrogen (N) represents the major bottleneck soil N cycling and yet is poorly understood compared to subsequent inorganic processes. Given importance rise global change, we investigated responses protein depolymerization microbial amino acid consumption increased temperature, elevated atmospheric CO2 , drought. The study was conducted in a change facility managed montane grassland Austria, where (eCO2 ) temperature (eT) were stimulated for 4...
Proteins comprise the largest soil N reservoir but cannot be taken up directly by microorganisms and plants due to size constraints stabilization of proteins in organo-mineral associations. Therefore cleavage this high molecular weight organic smaller soluble compounds as amino acids is a key step terrestrial cycle. In last years two isotope pool dilution approaches have been successfully established measure gross rates protein depolymerization microbial acid uptake soils. However, both...
<title>Abstract</title> Extracellular polymeric substances (EPS) are a vital component of microbial residues which contribute to soil organic carbon (SOC). However, despite various conjectures and hypotheses regarding EPS controls, empirical research experimental evidence validate these theories have remained highly limited. In this study, we addressed knowledge gap by conducting extensive sampling across Europe, encompassing diverse climates bedrock land use types, systematically...
Abstract. Soil fertility and plant productivity are globally constrained by N availability. Proteins the largest reservoir in soils, cleavage of proteins into small peptides amino acids has been shown to be rate-limiting step terrestrial cycle. However, we still lacking a profound understanding environmental controls this process. Here show that integrated effects climate soil geochemistry drive protein across large scales. We measured gross depolymerization rates mineral organic soils...
Abstract Disclosure: X. Xu: None. Y. Lin: B. Shivanna: A. Lee: J.C. Hakim: D.G. Mann: L.M. Noll: P. Georgiadis: S.K. Gunn: L.P. Karaviti: Background: Our case provides the identification and management of a newborn baby with ovotesticular syndrome, which was formerly known as true hermaphroditism. The term classically derived from Greek mythology in deity 'Hermaphroditus', merging nymph Salamis, embodied both male female attributes. 'true hermaphroditism' is now avoided due to its...
Abstract. Soil fertility and plant productivity are globally constrained by N availability. Proteins the largest reservoir in soils cleavage of proteins into small peptides amino acids has been shown to be rate limiting step terrestrial cycle. However, we still lacking a profound understanding environmental controls this process. Here show that integrated effects climate soil geochemistry drive protein across large scales. We measured gross depolymerization rates mineral organic sampled...