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Seasonal variation of leaf wax n-alkane production and delta H-2 values from the evergreen oak tree, Quercus agrifolia
- In order to understand the timing of leaf wax synthesis in higher plants, we analysed the variability in leaf wax n-alkane concentration, composition (expressed as average chain length (ACL)), and delta H-2(wax) values as well as plant source water delta H-2 values (xylem and leaf water) in the evergreen tree Quercus agrifolia over a period of 9 months, beginning with leaf flush. We identified three distinct periods of leaf development with the first month following leaf flush being characterized by de novo synthesis and possibly removal of n-alkanes. During the following 3 months, n-alkane concentrations increased sevenfold and delta H-2(wax) and ACL values increased, suggesting this period was the major leaf wax n-alkane formation period. During the remaining 4 months of the experiment, stable values suggest cessation of leaf wax n-alkane formation. We find that n-alkane synthesis in Q. agrifolia takes place over 4 months, substantially longer than that observed for deciduous trees.
Verfasserangaben: | Dirk SachseORCiDGND, Todd E. Dawson, Ansgar Kahmen |
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DOI: | https://doi.org/10.1080/10256016.2015.1011636 |
ISSN: | 1025-6016 |
ISSN: | 1477-2639 |
Pubmed ID: | https://pubmed.ncbi.nlm.nih.gov/25704898 |
Titel des übergeordneten Werks (Englisch): | Isotopes in environmental and health studies |
Verlag: | Routledge, Taylor & Francis Group |
Verlagsort: | Abingdon |
Publikationstyp: | Wissenschaftlicher Artikel |
Sprache: | Englisch |
Jahr der Erstveröffentlichung: | 2015 |
Erscheinungsjahr: | 2015 |
Datum der Freischaltung: | 27.03.2017 |
Freies Schlagwort / Tag: | hydrogen-2; isotope ecology; leaf wax; n-alkanes; oak tree |
Band: | 51 |
Ausgabe: | 1 |
Seitenanzahl: | 19 |
Erste Seite: | 124 |
Letzte Seite: | 142 |
Fördernde Institution: | German Research Foundation (DFG) [DS1889/1-1]; ERC [279518] |
Organisationseinheiten: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Chemie |
Peer Review: | Referiert |