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dc.creatorMitrović, Aleksandra Lj.
dc.creatorSimonović Radosavljević, Jasna
dc.creatorProkopijević, Miloš
dc.creatorSpasojević, Dragica
dc.creatorKovacević, Jovana
dc.creatorProdanović, Olivera
dc.creatorTodorović, Bratislav
dc.creatorMatović, Branko
dc.creatorStanković, Mira
dc.creatorMaksimović, Vuk
dc.creatorMutavdžić, Dragosav
dc.creatorSkocic, Milos
dc.creatorPesic, Mirjana
dc.creatorProkic, Ljiljana
dc.creatorRadotić, Ksenija
dc.date.accessioned2022-04-05T15:35:08Z
dc.date.available2022-04-05T15:35:08Z
dc.date.issued2021
dc.identifier.issn0981-9428
dc.identifier.urihttp://rimsi.imsi.bg.ac.rs/handle/123456789/1449
dc.description.abstractThe UV-B represents the minor fraction of the solar spectrum, while UV-C is not contained in natural solar radiation, but both radiation types can cause damaging effects in plants. Cell walls (CWs) are one of the targets for external stressors. Juvenile P. omorika trees were treated either with 21 day-high doses UV-B or with 7 day-UV-C in open-top chambers. Using spectroscopic and biochemical techniques, it was shown that the response to UV radiation includes numerous modifications in needle CW structure: relative content of xylan, xyloglucan, lignin and cellulose decreased; cellulose crystallinity changed; yield of lignin monomers with stronger connection of C=C in side chain with the ring increased; re-distribution of inter- and intra-polymer H-bonds occurred. The recovery was mediated by an increase in the activities and changes in isoform profiles of CW bound covalent peroxidases (POD) and polyphenol oxidases (PO) (UV-B), and ionic POD and covalent PO (UV-C). A connection between activities of specific POD/PO isoforms and phenolic species (m- and p-coumaric acid, pinoresinol and cinnamic acid derivatives) was demonstrated, and supported by changes in the sRNA profile. In vivo fluorometry showed phenolics accumulation in needle epidermal CWs. These results imply transversal connections between polymers and changed mechanical properties of needle CW as a response to UV. The CW alterations enabled maintenance of physiological functions, as indicated by the preserved chlorophyll content and/or organization. The current study provides evidence that in conifers, needle CW response to both UV-B and UV-C includes biochemical modifications and structural remodeling.en
dc.publisherElsevier France-Editions Scientifiques Medicales Elsevier, Issy-Les-Moulineaux
dc.relationinfo:eu-repo/grantAgreement/MESTD/inst-2020/200053/RS//
dc.relationinfo:eu-repo/grantAgreement/MESTD/inst-2020/200116/RS//
dc.rightsrestrictedAccess
dc.sourcePlant Physiology and Biochemistry
dc.subjectUV radiationen
dc.subjectPolyphenol oxidasesen
dc.subjectPicea omorikaen
dc.subjectPhenolicsen
dc.subjectPeroxidasesen
dc.subjectCell wall polymersen
dc.titleCell wall response to UV radiation in needles of Picea omorikaen
dc.typearticle
dc.rights.licenseARR
dc.citation.epage190
dc.citation.other161: 176-190
dc.citation.rankM21
dc.citation.spage176
dc.citation.volume161
dc.identifier.doi10.1016/j.plaphy.2021.02.007
dc.identifier.pmid33618201
dc.identifier.scopus2-s2.0-85101082745
dc.identifier.wos000637955100018
dc.type.versionpublishedVersion


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