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J Exp Bot


Title:Semi-volatile organic compounds at the leaf/atmosphere interface: numerical simulation of dispersal and foliar uptake
Author(s):Riederer M; Daiss A; Gilbert N; Kohle H;
Address:"Julius-von-Sachs-Institut fur Biowissenschaften, Lehrstuhl fur Botanik II, Universitat Wurzburg, Julius-von-Sachs-Platz 3, D-97082 Wurzburg, Germany. riederer@boranik.uni-wuerzburg.de"
Journal Title:J Exp Bot
Year:2002
Volume:53
Issue:375
Page Number:1815 - 1823
DOI: 10.1093/jxb/erf020
ISSN/ISBN:0022-0957 (Print) 0022-0957 (Linking)
Abstract:"The behaviour of (semi-)volatile organic compounds at the interface between the leaf surface and the atmosphere was investigated by finite-element numerical simulation. Three model systems with increasing complexity and closeness to the real situation were studied. The three-dimensional model systems were translated into appropriate grid structures and diffusive and convective transport in the leaf/atmosphere interface was simulated. Fenpropimorph (cis-4-[3-(4-tert-butylphenyl)-2-methylpropyl]-2,6-dimethylmorpholine) and Kresoxim-methyl ((E)-methyl-2-methoxyimino-2-[2-(o-tolyloxy-methyl)phenyl] acetate) were used as model compounds. The simulation showed that under still and convective conditions the vapours emitted by a point source rapidly form stationary envelopes around the leaves. Vapour concentrations within these unstirred layers depend on the vapour pressure of the compound in question and on its affinity to the lipoid surface layers of the leaf (cuticular waxes, cutin). The rules deduced from the numerical simulation of organic vapour behaviour in the leaf/atmosphere interface are expected to help in assessing how (semi-)volatile plant products (e.g. hormones, pheromones, secondary metabolites) and xenobiotics (e.g. pesticides, pollutants) perform on plant surfaces"
Keywords:"Algorithms Atmosphere/*chemistry Chemical Phenomena Chemistry, Physical Computer Simulation Convection Diffusion/drug effects Fungicides, Industrial/chemistry/pharmacology Methacrylates *Models, Biological Morpholines/chemistry/pharmacology Phenylacetates;"
Notes:"MedlineRiederer, Markus Daiss, Andreas Gilbert, Norbert Kohle, Harald eng Research Support, Non-U.S. Gov't England 2002/07/31 J Exp Bot. 2002 Aug; 53(375):1815-23. doi: 10.1093/jxb/erf020"

 
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