Rhizosphere Processes: Modelling and experimental assessment of metal interactions with organic ligands exuded by plant roots
Abstract
The rhizosphere is characterized by a distinct gradient in the distribution of organic substances, nutrients and pollutants exudated by plants and micro-organisms. This depends, among other factors, on the combination of soil - plant (varieties) in the individual case. The interaction between plants, micro-organisms and soil properties is additionally characterized by numerous dynamic feed back loops. The project focuses on interactions between exudates and metals and their meaning for the uptake of pollutants and nutrients by the plant root. We go into the matter to what extent organic acids can contribute to a mobilization and an increase in bio-availability of trace elements like copper and zinc as well as pollutants like cadmium and arsenic in the rhizosphere. The project is organized in several parts: (1) Mathematical modelling of basic processes, (2) Assessment of model parameters from the literature, (3) Experimental evaluation of model parameters for the soils and plants under survey, (4) Specific analytical and methodological questions, (5) Model validation with experiments in rhizoboxes developed for this purpose
keywords rhizosphere
Publikationen
Trace elements in the rhizosphere.
Autoren: Gobran, G., Wenzel, W.W., Lobmi, E. (Eds.) Jahr: 2000
Editorial
Biogeography and phenotypic variation in Trichoderma sect. Longibrachiatum and associated Hypocrea species.
Autoren: Turner, D., Kovacs, W., Kuhls, K., Lieckfeld, E., Strauss, J., Samuels, G.J., Kubicek, C.P. Jahr: 1997
Journal articles
Regulation of xylanase gene expression in Trichoderma reesei.
Autoren: Kubicek, C.P., Zeilinger, S., Mach, R.L., Strauss, J. Jahr: 1998
Chapter in collected volumes
Phytoextraction of heavy metal contaminated soils with Thlaspi goesingense and Amaranthus hybridus: Rhizosphere manipulation using EDTA and ammonium sulfate.
Autoren: Puschenreiter, M., Stöger, G., Lombi, E., Horak, O., Wenzel, W.W. Jahr: 2001
Journal articles
Rhizosphere processes involved in phytoextraction of metal-contaminated soils.
Autoren: Wenzel, W.W., Fitz, W., Puschenreiter, M., Sommer, P., Schnepf, A., Unterköfler, J. Jahr: 2001
Conference & Workshop proceedings, paper, abstract
Steine zum Leben erwecken.
Autoren: Strauss, J., Wenzel, W.W. Jahr: 2001
Newspaper / Magazine article
Heavy metal interactions in soils and implications to soil microbial diversity.
Autoren: Naidu, R., Krishnamurti,G.S.R., Bolan, N.S., Wenzel W.W., Megharaj, M. Jahr: 2001
Chapter in collected volumes
Rhizosphere studies on the Ni hyperaccumulator Thlaspi goesingense.
Autoren: Puschenreiter, M., Bunkowski, M., Horak, O., Wenzel, W.W. Jahr: 2001
Conference & Workshop proceedings, paper, abstract
A novel tool in rhizosphere modeling.
Autoren: Schnepf, A., Schrefl, T., Riedler, C., Wenzel, W.W. Jahr: 2001
Conference & Workshop proceedings, paper, abstract
Thin slicing of soils causes artifacts in rhizobox experiments.
Autoren: Fitz., W.J., Wenzel, W.W. Jahr: 2001
Conference & Workshop proceedings, paper, abstract
Rhizosphere - contaminant interaction and its role in phytoremediation: a review.
Autoren: Lombi, E., Wenzel, W.W., Gobran, G.R., Adriano, D.C. Jahr: 1999
Conference & Workshop proceedings, paper, abstract
Role and manipulation of the rhizosphere in soil remediation / revegetation.
Autoren: Wenzel, W.W., Puschenreiter, M., Horak, O. Jahr: 2000
Conference & Workshop proceedings, paper, abstract
Advances in estimating soil microbial biomass and enzymatic activities in the rhizosphere
Autoren: Friedel, J.K., Kobel, C., Stemmer, M., Fitz, W.J., Freyer, B., Wenzel, W.W. Jahr: 2002
Conference & Workshop proceedings, paper, abstract
CE-ICP-SFMS and HPIC-ICP-SMFS for arsenic speciation in soil solution and water extracts.
Autoren: Koellensperger, G., Nurmi, K., Hann, S., Stingeder, G., Fitz, W.J., Wenzel, W.W. Jahr: 2002
Journal articles
Rhizosphere characteristics of indigenously growing nickel hyperaccumulator and excluder plants on serpentine soil.
Autoren: Wenzel, WW; Bunkowski, M; Puschenreiter, M; Horak, O; Jahr: 2003
Journal articles
Chemical changes in the rhizosphere of metal hyperaccumulator and excluder Thlaspi species
Autoren: Puschenreiter M, Wieczorek S, Horak O and Wenzel WW Jahr: 2003
Journal articles
Characterization of root-induced mechanisms for acquisition of nutrients by horticultural plants
Autoren: M. Puschenreiter, L. Sas Paszt, G. Wieshammer and W.W. Wenzel Jahr: 2002
Conference & Workshop proceedings, paper, abstract
Biochemistry
Autoren: Angerer,I.; Biró,B.; Friedel,J.K.; Füzy,A.; Gil,Sotres F.; Leirós,M.C.; Neumann,G.; Pritsch,K.; Trasar-Cepeda,C.; Villnyi,I. Jahr: 2006
Chapter in collected volumes
The suitability of pde-solvers in rhizosphere modeling, exemplified by three mechanistic rhizosphere models
Autoren: Schnepf, A; Schrefl, T; Wenzel, WW Jahr: 2002
Journal articles
Project staff
Walter Wenzel
Univ.Prof. Dipl.-Ing. Dr.nat.techn. Walter Wenzel
walter.wenzel@boku.ac.at
Tel: +43 1 47654-91143, 91161
Project Leader
01.08.1999 - 31.07.2002
Bernhard Freyer
Univ.-Prof. i.R. Dipl.-Ing. Dr.Ing. Bernhard Freyer
bernhard.freyer@boku.ac.at
Project Staff
01.08.1999 - 31.07.2002
Jürgen Kurt Friedel
Ao.Univ.Prof. Dipl.-Ing. Dr. Jürgen Kurt Friedel
juergen.friedel@boku.ac.at
Tel: +43 1 47654-93317
Project Staff
01.08.1999 - 31.07.2002
Gerhard Josef Stingeder
Univ.-Prof. i.R. Dipl.-Ing. Dr.techn. Gerhard Josef Stingeder
gerhard.stingeder@boku.ac.at
Project Staff
01.08.1999 - 31.07.2002
Joseph Strauss
Univ.Prof. Mag.rer.nat. Dr.rer.nat. Joseph Strauss
joseph.strauss@boku.ac.at
Tel: +43 1 47654-94420
Project Staff
01.08.1999 - 31.07.2002
BOKU partners
External partners
Austrian Research Centers
Othmar Horak
partner
BFL, Institut für Pflanzenschutzmittelprüfung
Michael Pfeffer
partner
Vienna University of Technology
Thomas Schrefl
partner
University of Vienna, Institute of Plant Physiology, Department of Vegetation Ecology and Conservation Biology
Gerd Bachmann
partner