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Kaling, M. ; Kanawati, B. ; Ghirardo, A. ; Albert, A. ; Winkler, J.B. ; Heller, W. ; Barta, C.* ; Loreto, F.* ; Schmitt-Kopplin, P. ; Schnitzler, J.-P.

UV-B mediated metabolic rearrangements in poplar revealed by non-targeted metabolomics.

Plant Cell Environ. 38, 892-904 (2015)
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Plants have to cope with various abiotic stresses including UV-B radiation (280-315 nm). UV-B radiation is perceived by a photoreceptor, triggers morphological responses and primes plant defense mechanisms such as antioxidant levels, photo-repair or accumulation of UV-B screening pigments. As poplar is an important model system for trees, we elucidated the influence of UV-B on overall metabolite patterns in poplar leaves grown under high UV-B radiation. Combining non-targeted metabolomics with gas exchange analysis and confocal microscopy we aimed understanding how UV-B radiation triggers metabolome-wide changes, affects isoprene emission, photosynthetic performance, epidermal light attenuation and finally how isoprene-free poplars adjust their metabolome under UV-B radiation. Exposure to UV-B radiation caused a comprehensive rearrangement of the leaf metabolome. Several hundreds of metabolites were up and down-regulated over various pathways. Our analysis, revealed the up-regulation of flavonoids, anthocyanins and polyphenols and the down-regulation of phenolic precursors in the first 36 hours of UV-B treatment. We also observed a down-regulation of steroids after 12 hours. The accumulation of phenolic compounds leads to a reduced light transmission in UV-B-exposed plants. However, the accumulation of phenolic compounds was reduced in non-isoprene emitting plants suggesting a metabolic- or signaling-based interaction between isoprenoid and phenolic pathways.
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Publication type Article: Journal article
Document type Scientific Article
Keywords Fourier Transform Ion Cyclotron Resonance Mass Spectrometry ; Populus X Canescens ; Uv-b ; Non-targeted Metabolomics; Chromatography-mass Spectrometry; Isoprene-emitting Poplars; Synthase Messenger-rna; Chrysosplenium-americanum; Anthocyanin Biosynthesis; Ultraviolet-radiation; Arabidopsis-thaliana; Flavonol Glucosides; Tissue Localization; Chalcone Synthase
Language english
Publication Year 2015
Prepublished in Year 2014
HGF-reported in Year 2014
ISSN (print) / ISBN 0140-7791
e-ISSN 1365-3040
Journal Plant, Cell and Environment
Quellenangaben Volume: 38, Issue: 5, Pages: 892-904 Article Number: , Supplement: ,
Publisher Wiley
Publishing Place Malden, MA
Reviewing status Peer reviewed
Institute(s) Research Unit Environmental Simulation (EUS)
Research Unit BioGeoChemistry and Analytics (BGC)
Institute of Biochemical Plant Pathology (BIOP)
POF-Topic(s) 30202 - Environmental Health
Research field(s) Environmental Sciences
PSP Element(s) G-504991-001
G-504800-001
G-504900-001
PubMed ID 24738572
DOI 10.1111/pce.12348
WOS ID WOS:000353898400005
Scopus ID 84927715966
Scopus ID 84899806591
Erfassungsdatum 2014-04-19
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