Developmental age and UV-B exposure co-determine antioxidant capacity and flavonol accumulation in Arabidopsis leaves

dc.check.date2019-05-17
dc.check.infoAccess to this article is restricted until 24 months after publication at the request of the publisheren
dc.contributor.authorCsepregi, Kristóf
dc.contributor.authorCoffey, Aoife M.
dc.contributor.authorCunningham, Natalie
dc.contributor.authorPrinsen, Els
dc.contributor.authorHideg, Éva
dc.contributor.authorJansen, Marcel A. K.
dc.contributor.funderScience Foundation Irelanden
dc.contributor.funderOrszágos Tudományos Kutatási Alapprogramoken
dc.contributor.funderFonds Wetenschappelijk Onderzoeken
dc.date.accessioned2017-05-25T14:28:12Z
dc.date.available2017-05-25T14:28:12Z
dc.date.issued2017-05-17
dc.date.updated2017-05-25T14:12:52Z
dc.description.abstractDevelopmental age is an important determinant of plant stress responses. In this study the importance of “within-individual-heterogeneity” of developmental age for plant UV-B responses was quantified. Arabidopsis thaliana rosettes were raised under indoor conditions, and the responses of leaves at different developmental stages were compared following exposure to supplemental UV-B radiation. Exposure to a low dose of UV-B had positive effects on concentrations of UV-absorbing pigments, quercetins and kaempferols as well as total antioxidant activity measured. Unlike UV-B, developmental age had a substantial effect on photochemistry, and especially energy dissipation. Younger leaves display relatively strong regulated dissipation, while older leaves show more non-regulated, non-photochemical energy dissipation. Developmental age also impacted on concentrations of UV-absorbing compounds, and antioxidant activity. In fact, developmental variation matched, or even exceeded the UV-induced response for these two parameters. Thus, pooling of rosette leaves is not necessarily a good strategy to visualise plant UV-responses. Rather, to fully understand plant UV-responses in a developmental context it is important to advance reporter technologies for physiological studies, including spin-trap technology to visualise in planta ROS and ROS-defences, and fluorescence excitation screening technology and chromogenic assays for in planta visualisation of specific UV-absorbing pigments.en
dc.description.sponsorshipScience Foundation Ireland (11/RFP.1/EOB/3303); Országos Tudományos Kutatási Alapprogramok, Hungarian National Research, Development and Innovation Office through the Hungarian Scientific Grant Agency (OTKA K112309); Fonds Wetenschappelijk Onderzoek, Fund of Scientific Research Flanders (G000515N).en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationCsepregi, K., Coffey, A., Cunningham, N., Prinsen, E., Hideg, É. and Jansen, M. A. K. (2017) 'Developmental age and UV-B exposure co-determine antioxidant capacity and flavonol accumulation in Arabidopsis leaves', Environmental and Experimental Botany, 140, pp. 19-25. doi:10.1016/j.envexpbot.2017.05.009en
dc.identifier.doi10.1016/j.envexpbot.2017.05.009
dc.identifier.endpage25
dc.identifier.issn0098-8472
dc.identifier.journaltitleEnvironmental and Experimental Botanyen
dc.identifier.startpage19
dc.identifier.urihttps://hdl.handle.net/10468/4025
dc.identifier.volume140
dc.language.isoenen
dc.publisherElsevieren
dc.rights© 2016 Elsevier Ltd. This manuscript version is made available under the CC-BY-NC-ND 4.0 license.en
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectAntioxidanten
dc.subjectArabidopsisen
dc.subjectDevelopmenten
dc.subjectFlavonolen
dc.subjectPhotochemistryen
dc.subjectUltraviolet-Ben
dc.titleDevelopmental age and UV-B exposure co-determine antioxidant capacity and flavonol accumulation in Arabidopsis leavesen
dc.typeArticle (peer-reviewed)en
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