Concentration of isoprene in artificial and thylakoid membranes.

摘要: Isoprene emission protects plants from a variety of abiotic stresses. It has been hypothesized to do so by partitioning into cellular membranes, particularly the thylakoid membrane. At sufficiently high concentrations, this may alter physical properties membranes. As much as several per cent carbon taken up in photosynthesis is re-emitted isoprene but concentration membrane rapidly emitting seldom considered. In study, intramembrane phosphatidylcholine liposomes equilibrated physiologically relevant gas phase 20 μL L(-1) was less than predicted ab initio calculations based on octanol-water coefficient while membranes more. However, both systems roughly two orders magnitude lower previously assumed. High concentrations (2000 phase) failed viscosity measured with perylene, molecular probe structure. These results strongly suggest that physiological within leaves highly too low affect dynamics acyl lipids. speculated bind and modulate embedded proteins.