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

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dc.contributor.author Csepregi, Kristóf
dc.contributor.author Coffey, Aoife M.
dc.contributor.author Cunningham, Natalie
dc.contributor.author Prinsen, Els
dc.contributor.author Hideg, Éva
dc.contributor.author Jansen, Marcel A. K.
dc.date.accessioned 2017-05-25T14:28:12Z
dc.date.available 2017-05-25T14:28:12Z
dc.date.issued 2017-05-17
dc.identifier.citation Csepregi, K., Coffey, A., Cunningham, N., Prinsen, E., Hideg, É. and Jansen, M. A. K. 'Developmental age and UV-B exposure co-determine antioxidant capacity and flavonol accumulation in Arabidopsis leaves', Environmental and Experimental Botany. Article in Press. doi:10.1016/j.envexpbot.2017.05.009 en
dc.identifier.issn 0098-8472
dc.identifier.uri http://hdl.handle.net/10468/4025
dc.identifier.doi 10.1016/j.envexpbot.2017.05.009
dc.description.abstract Developmental 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.sponsorship Science 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.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Elsevier en
dc.rights © 2016 Elsevier Ltd. This manuscript version is made available under the CC-BY-NC-ND 4.0 license. en
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/4.0/ en
dc.subject Antioxidant en
dc.subject Arabidopsis en
dc.subject Development en
dc.subject Flavonol en
dc.subject Photochemistry en
dc.subject Ultraviolet-B en
dc.title Developmental age and UV-B exposure co-determine antioxidant capacity and flavonol accumulation in Arabidopsis leaves en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Marcel A.K. Jansen, School Of Bio, Earth & Env, University College Cork, Cork, Ireland. +353-21-490-3000 Email: m.jansen@ucc.ie en
dc.internal.availability Full text available en
dc.check.info Access to this article is restricted until 24 months after publication at the request of the publisher en
dc.check.date 2019-05-17
dc.date.updated 2017-05-25T14:12:52Z
dc.description.version Accepted Version en
dc.internal.rssid 396397289
dc.contributor.funder Science Foundation Ireland en
dc.contributor.funder Országos Tudományos Kutatási Alapprogramok en
dc.contributor.funder Fonds Wetenschappelijk Onderzoek en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Environmental and Experimental Botany en
dc.internal.copyrightchecked No !!CORA!! en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress m.jansen@ucc.ie en
dc.internal.bibliocheck In Press, May 2017. Update citation details, and volume, page numbers as needed


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© 2016 Elsevier Ltd. This manuscript version is made available under the CC-BY-NC-ND 4.0 license. Except where otherwise noted, this item's license is described as © 2016 Elsevier Ltd. This manuscript version is made available under the CC-BY-NC-ND 4.0 license.
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