A5002309408- Plant Surface Properties and Treatments
- Postharvest Quality and Shelf Life Management
- Tree Root and Stability Studies
- Forest Insect Ecology and Management
- Horticultural and Viticultural Research
- Insect and Arachnid Ecology and Behavior
- Microplastics and Plastic Pollution
- Plant Physiology and Cultivation Studies
University of Würzburg
2019-2022
Syngenta (Switzerland)
2022
The efficacy of the cuticular transpiration barrier and its resistance to elevated temperatures are significantly higher in a typical water-saver than water-spender plant growing hot desert.
Waxes are critical in limiting non-stomatal water loss higher terrestrial plants by making up the barrier for diffusion across cuticles. Using a differential extraction protocol, we investigated influence of various wax fractions on cuticular transpiration barrier. Triterpenoids (TRPs) and very long-chain aliphatics (VLCAs) were selectively extracted from isolated adaxial leaf cuticles using methanol (MeOH) followed chloroform (TCM). The permeabilities native solvent-treated measured...
The barrier to diffusion of organic solutes across the plant cuticle is composed waxes consisting very long-chain aliphatic (VLCA) and, varying degrees, cyclic compounds like pentacyclic triterpenoids. roles both fractions in controlling cuticular penetration by solutes, e.g. active ingredients (AI) pesticides, are unknown date. We studied permeability isolated leaf membranes from Garcinia xanthochymus and Prunus laurocerasus for lipophilic azoxystrobin theobromine as model hydrophilic...
Abstract Background and Aims The cuticle of a limited number plant species contains cutan, chemically highly resistant biopolymer. As yet, the biosynthesis cutan is not fully understood. Attempting to further unravel origin we analysed chemical composition enzymatically isolated cuticular membranes Agave americana leaves. Methods Cuticular waxes were extracted with organic solvents. Subsequently, dewaxed membrane was depolymerized by acid-catalysed transesterification yielding cutin monomers...
The penetration of the wax barrier plant cuticles is rate-limiting step for uptake surface applied pesticides. Optimizing rates active ingredients across this a significant objective rational design pesticide formulations. We used an ATR-FTIR-based method determining diffusion coefficients derived from Fickian kinetics in paraffin model diffusants differing chemical structure, lipophilicity, and size at different temperatures. At 25 °C, 4-cyanophenol heptyl parabene were 1.48 × 10–15 1.73 m2...