Leaf wax n-alkane δD values are determined early in the ontogeny of Populus trichocarpa leaves when grown under controlled environmental conditions
JournalArticle (Originalarbeit in einer wissenschaftlichen Zeitschrift)
 
ID 2106218
Author(s) Kahmen, Ansgar; Dawson, Todd E.; Vieth, Andrea; Sachse, Dirk
Author(s) at UniBasel Kahmen, Ansgar
Year 2011
Title Leaf wax n-alkane δD values are determined early in the ontogeny of Populus trichocarpa leaves when grown under controlled environmental conditions
Journal Plant, Cell and Environment
Volume 34
Number 10
Pages / Article-Number 1639-51
Abstract

The stable hydrogen isotope ratios (δD) of leaf wax n-alkanes record valuable information on plant and ecosystem water relations. It remains, however, unknown if leaf wax n-alkane δD values record only environmental variation during the brief period of time of leaf growth or if leaf wax n-alkane δD values are affected by environmental variability throughout the entire lifespan of a leaf. To resolve these uncertainties, we irrigated Populus trichocarpa trees with a pulse of deuterium-enriched water and used compound-specific stable hydrogen isotope analyses to test if the applied tracer could be recovered from leaf wax n-alkanes of leaves that were at different stages of their development during the tracer application. Our experiment revealed that only leaf wax n-alkanes from leaves that had developed during the time of the tracer application were affected, while leaves that were already fully matured at the time of the tracer application were not. We conclude from our study that under controlled environmental conditions, leaf wax n-alkanes are synthesized only early in the ontogeny of a leaf. Our experiment has implications for the interpretation of leaf wax n-alkane δD values in an environmental context, as it suggests that these compounds record only a brief period of the environmental variability that a leaf experiences throughout its life.

Publisher Wiley
ISSN/ISBN 0140-7791 ; 1365-3040
edoc-URL http://edoc.unibas.ch/49358/
Full Text on edoc No
Digital Object Identifier DOI 10.1111/j.1365-3040.2011.02360.x
PubMed ID http://www.ncbi.nlm.nih.gov/pubmed/21696403
ISI-Number WOS:000295094700003
Document type (ISI) Journal Article
 
   

MCSS v5.8 PRO. 0.321 sec, queries - 0.000 sec ©Universität Basel  |  Impressum   |    
01/02/2023