| Title: | Incomplete synchrony of inflorescence scent and temperature patterns in Arum maculatum L. (Araceae) |
| Author(s): | Marotz-Clausen G; Jurschik S; Fuchs R; Schaffler I; Sulzer P; Gibernau M; Dotterl S; |
| Address: | "Department of Biosciences, Plant Ecology, University of Salzburg, Hellbrunnerstr. 34, 5020 Salzburg, Austria. IONICON Analytik Gesellschaft m.b.H., Eduard-Bodem-Gasse 3, 6020 Innsbruck, Austria. CNRS - University of Corsica, Laboratory Sciences for the Environment (SPE - UMR 6134), Natural Resources Project, Vignola - Route des Sanguinaires, 20000 Ajaccio, France. Department of Biosciences, Plant Ecology, University of Salzburg, Hellbrunnerstr. 34, 5020 Salzburg, Austria. Electronic address: stefan.doetterl@sbg.ac.at" |
| DOI: | 10.1016/j.phytochem.2018.07.001 |
| ISSN/ISBN: | 1873-3700 (Electronic) 0031-9422 (Linking) |
| Abstract: | "In many Araceae both scent and heat production are known to temporally vary throughout anthesis, and in several species strong scents are released for pollinator attraction when thermogenesis is also strong. However, it is not known whether the temporal patterns of both scent emission and temperature are strictly synchronous and, for example, reach their maxima at the same time. We studied Arum maculatum, a brood-site deceptive species attracting its moth fly pollinators with strong fetid scents, to study temporal patterns in scent emission and temperature during anthesis. Inflorescence scents were collected and analysed by dynamic headspace and gas chromatography-mass spectrometry (GC-MS) or by proton-transfer-reaction-time-of-flight mass spectrometry (PTR-TOFMS), and the temperature of the appendix, which is the heating osmophore during pollinator attraction, was recorded by a thermocouple. We overall found that scent emission and temperature patterns were strongly correlated. However, in none of the seven studied individuals was the highest amount of scent released at times with the maximum temperature difference. Thus, patterns of scent emission and temperature are somewhat asynchronous suggesting that high scent emission rates and temporal scent patterns in plants with thermogenesis cannot be solely explained by temperature patterns. This calls for more in-depth studies to better understand the interplay between scent emission and thermogenesis" |
| Keywords: | Araceae/*chemistry Gas Chromatography-Mass Spectrometry Inflorescence/*chemistry Odorants/*analysis *Temperature Volatile Organic Compounds/*analysis Araceae Floral volatile compounds Gc-ms Non-invasive headspace technique Ptr-tofms Thermal desorption; |
| Notes: | "MedlineMarotz-Clausen, Gertrud Jurschik, Simone Fuchs, Roman Schaffler, Irmgard Sulzer, Philipp Gibernau, Marc Dotterl, Stefan eng England 2018/07/15 Phytochemistry. 2018 Oct; 154:77-84. doi: 10.1016/j.phytochem.2018.07.001. Epub 2018 Jul 10" |
