Molecular biological and (eco)physiological studies on isoprene emission in Arabidopsis and Grey poplar [Elektronische Ressource] / vorgelegt von Maaria Loivamäki

Molecular biological and (eco)physiological studies on isoprene emission in Arabidopsis and Grey poplar Inaugural-Dissertation zur Erlangung der Doktorwürde der Fakultät für Forst- und Umweltwissenschaften der Albert-Ludwigs-Universität Freiburg i. Brsg. vorgelegt von Maaria Loivamäki Freiburg im Breisgau 2008 Dekan: Prof. Dr. Heinz Rennenberg Referent: Prof. Dr. Jörg-Peter Schnitzler Koreferent: Prof. Dr. Heinz Rennenberg Datum der mündlichen Prüfung: 09.07.2008 SUMMARY SUMMARY Plants interact with their environment with a great variety of volatile organic compounds (VOCs), isoprenoids (≡ terpenes), i.e. isoprene, mono-, homo-, di- and sesquiterpenes, being the most prominent group. Isoprene, a hemiterpene, is the simplest isoprenoid compound whose main source, woody plant species, comprises 75% of the 500 Tg C isoprene emitted to the atmosphere per year. Due to the significant influence of isoprene in atmospheric chemistry, growing research interests have focused to investigate this C5 compound. However, physiological function(s) of isoprene emission in planta is not elucidated to date. Actual studies indicate that isoprene can enhance thermotolerance or quench oxidative stress, but the underlying mechanisms are widely unknown.