caa a22 4500 477100503 CHVBK 20180405111539.0 cr unu---uuuuu 170330e19960101xx s 000 0 eng 10.1007/BF00197592 doi (NATIONALLICENCE)springer-10.1007/BF00197592 Transport properties of cuticular waxes of Fagus sylvatica L. and Picea abies (L.) Karst.: Estimation of size selectivity and tortuosity from diffusion coefficients of aliphatic molecules [Elektronische Daten] [Lukas Schreiber, Thomas Kirsch, Markus Riederer] Diffusion coefficients for thirteen lipophilic organic compounds in reconstituted waxes of Fagus sylvatica L. and Picea abies (L.) Karst. were measured to characterise the transport properties of the cuticular waxes that form the transport-limiting barrier of plant cuticles. Desorption kinetics (relative amounts desorbed versus time) were asymptotic, but could be linearized up to 50% desorption by plotting relative amounts desorbed versus the square root of time. Diffusion coefficients calculated from the slopes of the linear regressions ranged from 10−22 to 10−17 m2·s−1 and decreased with increasing molecular size. This size dependency of diffusion coefficients was analysed, assuming an exponential dependence of the diffusion coefficients on molar volumes, which allowed cuticular transport properties to be related to the physical structure of the wax. Furthermore, the fact that the barrier properties of Fagus wax are less pronounced than those of Picea is interpreted as an ecological adaptation of the respective tree species to their habitats at the level of their cuticular transport barriers. Springer-Verlag, 1996 Cuticular wax nationallicence Diffusion coefficient nationallicence Fagus nationallicence Picea nationallicence Plant cuticle nationallicence D : diffusion coefficient nationallicence Schreiber Lukas Julius-von-Sachs-Institut für Biowissenschaften, Lehrstuhl für Botanik II, Universität Würzburg, Mittlerer Dallenbergweg 64, D-97082, Würzburg aut Kirsch Thomas Julius-von-Sachs-Institut für Biowissenschaften, Lehrstuhl für Botanik II, Universität Würzburg, Mittlerer Dallenbergweg 64, D-97082, Würzburg aut Riederer Markus Julius-von-Sachs-Institut für Biowissenschaften, Lehrstuhl für Botanik II, Universität Würzburg, Mittlerer Dallenbergweg 64, D-97082, Würzburg aut Planta Springer-Verlag 198/1(1996-01-01), 104-109 0032-0935 198:1<104 1996 198 425 https://doi.org/10.1007/BF00197592 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00197592 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Schreiber Lukas Julius-von-Sachs-Institut für Biowissenschaften, Lehrstuhl für Botanik II, Universität Würzburg, Mittlerer Dallenbergweg 64, D-97082, Würzburg aut NATIONALLICENCE 700 1- Kirsch Thomas Julius-von-Sachs-Institut für Biowissenschaften, Lehrstuhl für Botanik II, Universität Würzburg, Mittlerer Dallenbergweg 64, D-97082, Würzburg aut NATIONALLICENCE 700 1- Riederer Markus Julius-von-Sachs-Institut für Biowissenschaften, Lehrstuhl für Botanik II, Universität Würzburg, Mittlerer Dallenbergweg 64, D-97082, Würzburg aut NATIONALLICENCE 773 0- Planta Springer-Verlag 198/1(1996-01-01), 104-109 0032-0935 198:1<104 1996 198 425 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer