Home > Publications database > Biogenic Volatile Organic Compound and Respiratory CO2 Emissions after 13C-Labeling: Online Tracing of C Translocation Dynamics in Poplar Plants > print

001     15172
005     20200702121554.0
024 7 _ |a pmid:21387007
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024 7 _ |a pmc:PMC3046154
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024 7 _ |a 10.1371/journal.pone.0017393
|2 DOI
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041 _ _ |a eng
082 _ _ |a 500
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|a Biology
100 1 _ |0 P:(DE-HGF)0
|a Ghirardo, A.
|b 0
245 _ _ |a Biogenic Volatile Organic Compound and Respiratory CO2 Emissions after 13C-Labeling: Online Tracing of C Translocation Dynamics in Poplar Plants
260 _ _ |a Lawrence, Kan.
|b PLoS
|c 2011
300 _ _ |a e17393
336 7 _ |a Journal Article
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336 7 _ |a ARTICLE
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336 7 _ |a JOURNAL_ARTICLE
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336 7 _ |a article
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440 _ 0 |0 18181
|a PLOS One
|v 6
|x 1932-6203
|y 2
500 _ _ |3 POF3_Assignment on 2016-02-29
500 _ _ |a Financial support was given by the Human Frontier Science Program ( to J. P. S. and A. G.) and the German Research Foundation ( to J. P. S., DFG SCHN653/4). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
520 _ _ |a Globally plants are the primary sink of atmospheric CO(2), but are also the major contributor of a large spectrum of atmospheric reactive hydrocarbons such as terpenes (e.g. isoprene) and other biogenic volatile organic compounds (BVOC). The prediction of plant carbon (C) uptake and atmospheric oxidation capacity are crucial to define the trajectory and consequences of global environmental changes. To achieve this, the biosynthesis of BVOC and the dynamics of C allocation and translocation in both plants and ecosystems are important.We combined tunable diode laser absorption spectrometry (TDLAS) and proton transfer reaction mass spectrometry (PTR-MS) for studying isoprene biosynthesis and following C fluxes within grey poplar (Populus x canescens) saplings. This was achieved by feeding either (13)CO(2) to leaves or (13)C-glucose to shoots via xylem uptake. The translocation of (13)CO(2) from the source to other plant parts could be traced by (13)C-labeled isoprene and respiratory (13)CO(2) emission.In intact plants, assimilated (13)CO(2) was rapidly translocated via the phloem to the roots within 1 hour, with an average phloem transport velocity of 20.3±2.5 cm h(-1). (13)C label was stored in the roots and partially reallocated to the plants' apical part one day after labeling, particularly in the absence of photosynthesis. The daily C loss as BVOC ranged between 1.6% in mature leaves and 7.0% in young leaves. Non-isoprene BVOC accounted under light conditions for half of the BVOC C loss in young leaves and one-third in mature leaves. The C loss as isoprene originated mainly (76-78%) from recently fixed CO(2), to a minor extent from xylem-transported sugars (7-11%) and from photosynthetic intermediates with slower turnover rates (8-11%).We quantified the plants' C loss as respiratory CO(2) and BVOC emissions, allowing in tandem with metabolic analysis to deepen our understanding of ecosystem C flux.
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588 _ _ |a Dataset connected to Web of Science, Pubmed
650 _ 2 |2 MeSH
|a Algorithms
650 _ 2 |2 MeSH
|a Biological Transport: physiology
650 _ 2 |2 MeSH
|a Carbon: pharmacokinetics
650 _ 2 |2 MeSH
|a Carbon Dioxide: metabolism
650 _ 2 |2 MeSH
|a Carbon Isotopes: pharmacokinetics
650 _ 2 |2 MeSH
|a Cell Respiration: physiology
650 _ 2 |2 MeSH
|a Models, Biological
650 _ 2 |2 MeSH
|a Online Systems: instrumentation
650 _ 2 |2 MeSH
|a Plant Leaves: metabolism
650 _ 2 |2 MeSH
|a Plant Shoots: metabolism
650 _ 2 |2 MeSH
|a Plants: metabolism
650 _ 2 |2 MeSH
|a Populus: metabolism
650 _ 2 |2 MeSH
|a Staining and Labeling: instrumentation
650 _ 2 |2 MeSH
|a Staining and Labeling: methods
650 _ 2 |2 MeSH
|a Volatile Organic Compounds: metabolism
650 _ 7 |0 0
|2 NLM Chemicals
|a Carbon Isotopes
650 _ 7 |0 0
|2 NLM Chemicals
|a Volatile Organic Compounds
650 _ 7 |0 124-38-9
|2 NLM Chemicals
|a Carbon Dioxide
650 _ 7 |0 7440-44-0
|2 NLM Chemicals
|a Carbon
650 _ 7 |2 WoSType
|a J
700 1 _ |0 P:(DE-HGF)0
|a Gutknecht, J.
|b 1
700 1 _ |0 P:(DE-HGF)0
|a Zimmer, I.
|b 2
700 1 _ |0 P:(DE-Juel1)142357
|a Brüggemann, N.
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700 1 _ |0 P:(DE-HGF)0
|a Schnitzler, J.P.
|b 4
773 _ _ |0 PERI:(DE-600)2267670-3
|a 10.1371/journal.pone.0017393
|g Vol. 6, p. e17393
|p e17393
|q 6|t PLoS one
|v 6
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856 7 _ |2 Pubmed Central
|u http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3046154
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