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SPP 1315: Isotope fractionation associated with sorption of polar and ionogenic pesticides to soil horizon A and B components - Fundamental studies and modelling Subproject: Isotope fractionation associated with natural reactions and sorption of pesticides: Analytical development and initial process studies (Project)
Compound specific isotope analysis (CSIA) can be used to investigate and monitor the fate of organic contaminants in groundwater and soil systems. CSIA measures the isotope composition of a compound at natural abundance. The ratio of the isotopes (13C/12C, 2H/1H, 15N/14N, 18O/16O) is given relative to the international standard (Peedee Belemnite for carbon). On the one hand, different isotopic...
Funding period: 2007 - 2010
Relevancy: 100%
SPP 1315: Visualization and quantification of processes at biogeochemical interfaces with magnetic resonance imaging (Project)
Objectives • Development of markers to access the spatial distribution of selected organic chemicals in soil • Visualization of biogeochemical interfaces in soil • Development of a technique to characterize the activity of biogeochemical interfaces in the spatial and temporal domain Hypotheses The fate of organic pollutants in soil is controlled by spatial features of the biogeochemical...
Funding period: 2007 - 2010
Relevancy: 100%
SPP 1315: Modification of pore surface physicochemistry in unsaturated media by formation of biogeochemical interfaces - Contact angle analysis and relevance for sorption and transport of solutes and colloids (Project)
The reactivity of soil solid surfaces depends on their surface chemistry and spatial accessibility. Beside geometrical factors such as surface roughness and pore topology, the accessibility of solid surfaces is determined by the interfacial (wetting) properties of the solid and liquid phase as they control the distribution of fluid phases (liquid/gas) in the matrix. The project intends to...
Funding period: 2007 - 2010
Relevancy: 100%
SPP 1090: Investigation of soil organic matter and soil gases with laser spectroscopic in-situ metrology (Project)
keine Angaben
Funding period: 2000 - 2006
Relevancy: 100%
SPP 1090 AG 3: Influence of micro-and macro bioturbation by soil animals on the stabilization of organic matter in arable soils (Project)
keine Angaben
Funding period: 2000 - 2006
Relevancy: 100%
SPP 1090 AG 3: In-situ analysis of microbial populations and activities in soil microhabitats (Project)
keine Angaben
Funding period: 2000 - 2006
Relevancy: 100%
SPP 1149: Analysis of the genetic basis of heterosis in oilseed rape (Brassica napus) via comparative QTL mapping and expression QTL analysis (Project)
The overall aim of this project is a comparative analysis of the genetic control of heterosis in oilseed rape (Brassica napus L.) by QTL mapping of heterosis-relevant loci in different B. napus mapping populations. In the Gießen project a doubled haploid (DH) mapping population that has been generated in preliminary work from a cross between two lines with high and low general combining ability,...
Funding period: 2003 - 2009
Relevancy: 100%
SPP 1149: Analysis of the relationship between heterosis and the epigenetic modification of DNA and histones in Arabidopsis thaliana (Project)
keine Angaben
Funding period: 2003 - 2009
Relevancy: 100%
SPP 1149: Biometric tools for microarrays (Project)
Gene-expression data from microarrays open up a wide range of options for understanding gene action in general and heterosis in particular. Typically, many 1.000 genes are spotted on a microarray and screened for differential expression, while the number of replicates is often limited due to budget constraints, so the number of variables by far exceeds that of replications and the danger of...
Funding period: 2003 - 2009
Relevancy: 100%
SPP 1149: Estimation of the genetic components of heterosis by means of new experimental design and integrated data analysis with special focus on epistasis (Project)
Heterosis is of fundamental importance in plant breeding, yet its underlying causes are still unknown. We tested several hybrids of Arabidopsis and found substantial (smaller than 50%) heterosis for biomass yield in this model species for plant genomic research. In agreement with other groups participating in this program, we chose the cross Col-O x C24 as a model for heterosis research. Our goal...
Funding period: 2003 - 2009
