Seasonal variation of leaf wax n-alkane production and δ(2)H values from the evergreen oak tree, Quercus agrifolia
JournalArticle (Originalarbeit in einer wissenschaftlichen Zeitschrift)
 
ID 3115336
Author(s) Sachse, Dirk; Dawson, Todd E.; Kahmen, Ansgar
Author(s) at UniBasel Kahmen, Ansgar
Year 2015
Title Seasonal variation of leaf wax n-alkane production and δ(2)H values from the evergreen oak tree, Quercus agrifolia
Journal Isotopes in Environmental and Health Studies
Volume 51
Number 1
Pages / Article-Number 124-42
Keywords leaf wax, oak tree, hydrogen-2, isotope ecology, n-alkanes
Abstract

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 δ(2)Hwax values as well as plant source water δ(2)H 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 δ(2)Hwax 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.

Publisher Taylor & Francis
ISSN/ISBN 1025-6016 ; 1477-2639
edoc-URL http://edoc.unibas.ch/dok/A6381815
Full Text on edoc No
Digital Object Identifier DOI 10.1080/10256016.2015.1011636
PubMed ID http://www.ncbi.nlm.nih.gov/pubmed/25704898
ISI-Number WOS:000353503200012
Document type (ISI) Journal Article
 
   

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