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dc.contributor.author
Studer, Mirjam S.
dc.contributor.author
Siegwolf, Rolf
dc.contributor.author
Leuenberger, Markus Christian
dc.contributor.author
Abiven, Samuel
dc.date.accessioned
2018-09-19T13:23:18Z
dc.date.available
2017-06-11T17:08:30Z
dc.date.available
2018-09-19T13:23:18Z
dc.date.issued
2015
dc.identifier.issn
1726-4170
dc.identifier.issn
1726-4170
dc.identifier.other
10.5194/bg-12-1865-2015
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/100314
dc.identifier.doi
10.3929/ethz-b-000100314
dc.description.abstract
Isotope labelling is a powerful tool to study elemental cycling within terrestrial ecosystems. Here we describe a new multi-isotope technique to label organic matter (OM). We exposed poplars (Populus deltoides × nigra) for 14 days to an atmosphere enriched in 13CO2 and depleted in 2H218O. After 1 week, the water-soluble leaf OM (δ13C = 1346 ± 162‰) and the leaf water were strongly labelled (δ18O = −63 ± 8, δ2H = −156 ± 15‰). The leaf water isotopic composition was between the atmospheric and stem water, indicating a considerable back-diffusion of vapour into the leaves (58–69%) in the opposite direction to the net transpiration flow. The atomic ratios of the labels recovered (18O/13C, 2H/13C) were 2–4 times higher in leaves than in the stems and roots. This could be an indication of the synthesis of more condensed compounds in roots and stems (e.g. lignin vs. cellulose) or might be the result of O and H exchange and fractionation processes during phloem transport and biosynthesis. We demonstrate that the three major OM elements (C, O, H) can be labelled and traced simultaneously within the plant. This approach could be of interdisciplinary interest in the fields of plant physiology, palaeoclimatic reconstruction or soil science.
en_US
dc.format
application/pdf
dc.language.iso
en
en_US
dc.publisher
Copernicus
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/3.0/
dc.title
Multi-isotope labelling of organic matter by diffusion of H-2/O-18-H2O vapour and C-13-CO2 into the leaves and its distribution within the plant
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 3.0 Unported
dc.date.published
2015-03-20
ethz.journal.title
Biogeosciences
ethz.journal.volume
12
en_US
ethz.journal.issue
6
en_US
ethz.pages.start
1865
en_US
ethz.pages.end
1879
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.nebis
006289717
ethz.publication.place
Göttingen
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2017-06-11T17:09:17Z
ethz.source
ECIT
ethz.identifier.importid
imp5936531f4049740142
ethz.ecitpid
pub:157377
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-07-15T10:40:04Z
ethz.rosetta.lastUpdated
2021-02-15T01:48:25Z
ethz.rosetta.versionExported
true
ethz.COinS
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