A new glycoside of salicylic aldehyde, paeonicluside, was isolated from the roots of the Greek endemic species Paeonia clusii subsp. clusii and identified as alpha-L-arabinopyranosyl-(1-->6)-O-beta-D-glucopyranoside of salicylic aldehyde (1). In addition, one characteristic monoterpene and two monoterpene glycosides were identified as paeoniflorigenone, paeoniflorin and benzoyl paeoniflorin, re...

Emission of monoterpenes from European beech (Fagus sylvatica L.) as a function of light and temperature T. Dindorf, U. Kuhn, L. Ganzeveld, G. Schebeske, P. Ciccioli, C. Holzke, R. Köble, G. Seufert, and J. Kesselmeier Max Planck Institute for Chemistry, Department of Biogeochemistry, Johann-Joachim Becher Weg 27, D-55128, Mainz, Germany Max Planck Institute for Chemistry, Department of Airchem...

Cabboiism ~f Mirno"eerpenes. Research uncx DOE sapport during -1991 established the pathways for the metabolism of menthone in peppermint and through a series of in vivo feeding experiments and in virro studies. Each enzyme of each pathway was partially purified from leaf extracts and characterized. This work has been described in detail (7,27). A recent review (30) correlates genetic data from...

BACKGROUND Plant allelochemicals released into the soil can significantly impact the performance of associated plant species thereby affecting their competitive ability. Soil microbes can potentially affect the interaction between plant and plant chemicals by degrading the allelochemicals. However, most often plant-plant chemical interactions are studied using filter paper bioassays examining t...

Isoprene and monoterpenes constitute a significant fraction of new plant biomass. Emission rates into the atmosphere alone are estimated to be over 500 Tg per year. These natural hydrocarbons are mineralized annually in similar quantities. In the atmosphere, abiotic photochemical processes cause lifetimes of minutes to hours. Microorganisms encounter isoprene, monoterpenes, and other volatiles ...

Introduction Conclusions References

Volatile organic compounds (VOCs) are emitted into the atmosphere from natural and anthropogenic sources, vegetation being the dominant source on a global scale. Some of these reactive compounds are deemed major contributors or inhibitors to aerosol particle formation and growth, thus making VOC measurements essential for current climate change research. This thesis discusses ecosystem scale VO...

The seasonal variation of mono-and sesquiterpene emission rates of Scots pine was measured from April to October in 2004. The emission rates were measured daily in the afternoons with the exception of weekends. Emissions were measured from two branches; one of them was debudded in May (branch A), while the other was allowed to grow new needles (branch B). The monoterpene emission pattern remain...