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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Dragota, Simona Riederer, Markus |
| Description | Country affiliation: Germany Author Affiliation: Dragota S ( Universität Würzburg, Julius-von-Sachs-Institut für Biowissenschaften, D-97082 Würzburg, Germany.) |
| Abstract | BACKGROUND AND AIMS: The morphology of the epicuticular leaf waxes of Wollemia nobilis (Araucariaceae) was studied with special emphasis on the relationship between the microstructure of epicuticular wax crystals and their chemical composition. Wollemia nobilis is a unique coniferous tree of the family Araucariaceae and is of very high scientific value as it is the sole living representative of an ancient genus, which until 1994 was known only from fossils. METHODS: Scanning electron microscopy (SEM), gas chromatography (GC) combined with mass spectrometry (GC-MS) and nuclear magnetic resonance spectroscopy (NMR) were used for characterizing the morphology and the chemical structure of the epicuticular wax layer of W. nobilis needles. KEY RESULTS: The main component of the leaf epicuticular wax of W. nobilis is nonacosan-10-ol. This secondary alcohol together with nonacosane diols is responsible for the tubular habit of the epicuticular wax crystals. Scanning electron micrographs revealed differences in the fine structure of adaxial and abaxial leaf surfaces that could be explained by gas chromatographic studies after selective mechanical removal of the waxes. CONCLUSIONS: SEM investigations established the tubular crystalline microstructure of the epicuticular wax of W. nobilis leaves. GC-MS and NMR experiments showed that nonacosan-10-ol is the major constituent of the epicuticular wax of W. nobilis leaves. |
| File Format | HTM / HTML |
| ISSN | 03057364 |
| e-ISSN | 10958290 |
| Journal | Annals of Botany |
| Issue Number | 2 |
| Volume Number | 100 |
| Language | English |
| Publisher | Oxford University Press |
| Publisher Date | 2007-08-01 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | Open |
| Subject Keyword | Research Support, Non-u.s. Gov't Chemistry Microscopy, Electron, Scanning Discipline Botany Magnetic Resonance Spectroscopy Ultrastructure Plant Epidermis Coniferophyta Gas Chromatography-mass Spectrometry Waxes |
| Content Type | Text |
| Resource Type | Article |
| Subject | Plant Science |
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