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Neugart, S.* ; Steininger, V.* ; Fernandes, C.* ; Martínez-Abaigar, J.* ; Núñez-Olivera, E.* ; Schreiner, M.* ; Strid, A.* ; Viczián, A.* ; Albert, A. ; Badenes-Pérez, F.R.* ; Castagna, A.* ; Dáder, B.* ; Fereres, A.* ; Gaberscik, A.* ; Gulyás, A.* ; Gwynn-Jones, D.* ; Nagy, F.* ; Jones, A.* ; Julkunen-Tiitto, R.* ; Konstantinova, N.* ; Lakkala, K.* ; Llorens, L.* ; Martínez-Lüscher, J.* ; Nybakken, L.* ; Olsen, J.* ; Pascual, I.* ; Ranieri, A.* ; Regier, N.* ; Robson, M.* ; Rosenqvist, E.* ; Santin, M.* ; Turunen, M.* ; Vandenbussche, F.* ; Verdaguer, D.* ; Winkler, J.B. ; Witzel, K.-P.* ; Grifoni, D.* ; Zipoli, G.* ; Hideg, E.* ; Jansen, M.A.K.* ; Hauser, M.T.*

A synchronized, large-scale field experiment using Arabidopsis thaliana reveals the significance of the UV-B photoreceptor UVR8 under natural conditions.

Plant Cell Environ., DOI: 10.1111/pce.15008 (2024)
Postprint DOI PMC
Open Access Gold (Paid Option)
Creative Commons Lizenzvertrag
This study determines the functional role of the plant ultraviolet-B radiation (UV-B) photoreceptor, UV RESISTANCE LOCUS 8 (UVR8) under natural conditions using a large-scale 'synchronized-genetic-perturbation-field-experiment'. Laboratory experiments have demonstrated a role for UVR8 in UV-B responses but do not reflect the complexity of outdoor conditions where 'genotype × environment' interactions can mask laboratory-observed responses. Arabidopsis thaliana knockout mutant, uvr8-7, and the corresponding Wassilewskija wild type, were sown outdoors on the same date at 21 locations across Europe, ranging from 39°N to 67°N latitude. Growth and climatic data were monitored until bolting. At the onset of bolting, rosette size, dry weight, and phenolics and glucosinolates were quantified. The uvr8-7 mutant developed a larger rosette and contained less kaempferol glycosides, quercetin glycosides and hydroxycinnamic acid derivatives than the wild type across all locations, demonstrating a role for UVR8 under field conditions. UV effects on rosette size and kaempferol glycoside content were UVR8 dependent, but independent of latitude. In contrast, differences between wild type and uvr8-7 in total quercetin glycosides, and the quercetin-to-kaempferol ratio decreased with increasing latitude, that is, a more variable UV response. Thus, the large-scale synchronized approach applied demonstrates a location-dependent functional role of UVR8 under natural conditions.
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Publication type Article: Journal article
Document type Scientific Article
Corresponding Author
Keywords Flavonoid ; Glucosinolate ; Metabolite ; Plant Morphology; Occurring Flavonoid Glycosides; Light Signal-transduction; Plant-growth; Gene-expression; Radiation; Responses; Identification; Biosynthesis; Accumulation; Acclimation
ISSN (print) / ISBN 0140-7791
e-ISSN 1365-3040
Journal Plant, Cell and Environment
Publisher Wiley
Publishing Place Malden, MA
Non-patent literature Publications
Reviewing status Peer reviewed
Institute(s) Research Unit Environmental Simulation (BIOP-EUS)
Grants Faculty for Business, Science and Technology at Örebro University
Austrian Science Fund (FWF)
Academy of Finland
COST action FA0906