Pavón, Esperanza Osuna, Francisco J Alba, María D Delevoye, Laurent
Published in
Solid state nuclear magnetic resonance
Combining 17O Magic-Angle Spinning (MAS) NMR at natural abundance with DFT calculations is a promising methodology to shed light on the structure and disorder in tetrahedral sheets of designed micas with enhanced properties. Among brittle micas, synthetic mica is an important alternative to natural ones with a swelling sheet-like structure that res...
Kirui, Alex Ling, Zhe Kang, Xue Dickwella Widanage, Malitha C. Mentink-Vigier, Frederic French, Alfred D. Wang, Tuo
Published in
Cellulose
AbstractThe insufficient resolution of conventional methods has long limited the structural elucidation of cellulose and its derivatives, especially for those with relatively low crystallinities or in native cell walls. Recent 2D/3D solid-state NMR studies of 13C uniformly labeled plant biomaterials have initiated a re-investigation of our existing...
SILVA, A. F. da FREITAS, A. D. S. de COSTA, T. L. FERNANDES JUNIOR, P. I. MARTINS, L. M. V. SANTOS, C. E. de R. e S. MENEZES, K. A. S. SAMPAIO, E. V. de S. B.
2017
Rosenzweig, Steven T. Schipanski, Meagan E. Kaye, Jason P.
Published in
Plant and Soil
Background and aimsRhizosphere priming occurs when plant belowground carbon (C) allocation influences the rate of soil organic matter (SOM) decomposition. We investigated the effects of priming and plant-mediated cover crop decomposition on agroecosystem C and nitrogen (N) dynamics.MethodsUsing C stable isotopes, we tracked C and N from corn, clove...
Smith, Millicent Wild, Birgit Richter, Andreas Simonin, Kevin Merchant, Andrew
Published in
Plant & cell physiology
The use of carbon isotope abundance (δ(13)C) to assess plant carbon acquisition and water use has significant potential for use in crop management and plant improvement programs. Utilizing Phaseolus vulgaris L. as a model system, this study demonstrates the occurrence and sensitivity of carbon isotope fractionation during the onset of abiotic stres...
Mnich, Meagan E. Houlton, Benjamin Z.
Published in
Oecologia
Nitrogen (N) losses constrain rates of plant carbon dioxide (CO2) uptake and storage in many ecosystems globally. N isotope models have been used to infer that ~30 % of terrestrial N losses occur via microbial denitrification; however, this approach assumes a small isotope effect associated with N leaching losses. Past work across tropical/sub-trop...
Pupillo, Daniele Simonato, Manuela Cogo, Paola E. Lapillonne, Alexandre Carnielli, Virgilio P.
Published in
Lipids
Finger or heel-pricked blood sampling for fatty acid analysis is suitable especially in newborn infants where blood sampling is difficult and phlebotomy for research can be unethical. The aim of this study was to evaluate dried blood long chain polyunsaturated fatty acids (LC-PUFA) stability during storage at −28 °C. We collected 12 blood cord samp...
Berdagué, Philippe Lesot, Philippe Jacob, Jérémy Terwilliger, Valery T. Le Milbeau, Claude
The hydrogen isotopic composition (δD or (D/H) value) of molecular biomarkers preserved in sedimentary archives is increasingly used to provide clues about the evolution of past climatic conditions. The rationale is that intact biomarkers retain isotopic information related to the climatic conditions that prevailed at the time of their synthesis. S...
Werner, Mayke Heil, Andreas Rothermel, Niels Breitzke, Hergen Groszewicz, Pedro Braga Thankamony, Aany Sofia Gutmann, Torsten Buntkowsky, Gerd
Published in
Solid state nuclear magnetic resonance
The successful synthesis and solid state NMR characterization of silica-based organic-inorganic hybrid materials is presented. For this, collagen-like peptides are immobilized on carboxylate functionalized mesoporous silica (COOH/SiOx) materials. A pre-activation of the silica material with TSTU (O-(N-Succinimidyl)-N,N,N',N'-tetramethyluronium tetr...
Menichetti, Lorenzo Houot, Sabine van Oort, Folkert Kätterer, Thomas Christensen, Bent T. Chenu, Claire Barré, Pierre Vasilyeva, Nadezda A. Ekblad, Alf
Published in
Oecologia
Changes in the 12C/13C ratio (expressed as δ13C) of soil organic C (SOC) has been observed over long time scales and with depth in soil profiles. The changes are ascribed to the different reaction kinetics of 12C and 13C isotopes and the different isotopic composition of various SOC pool components. However, experimental verification of the subtle ...
