dc.creator | Mitrović, Aleksandra Lj. | |
dc.creator | Simonović Radosavljević, Jasna | |
dc.creator | Prokopijević, Miloš | |
dc.creator | Spasojević, Dragica | |
dc.creator | Kovačević, Jovana | |
dc.creator | Prodanović, Olivera | |
dc.creator | Todorović, Bratislav | |
dc.creator | Matović, Branko | |
dc.creator | Stanković, Mira | |
dc.creator | Maksimović, Vuk | |
dc.creator | Mutavdžić, Dragosav | |
dc.creator | Skočić, Miloš | |
dc.creator | Pešić, Mirjana | |
dc.creator | Prokić, Ljiljana | |
dc.creator | Radotić, Ksenija | |
dc.date.accessioned | 2021-03-10T15:25:20Z | |
dc.date.available | 2021-03-10T15:25:20Z | |
dc.date.issued | 2021 | |
dc.identifier.issn | 0981-9428 | |
dc.identifier.uri | http://aspace.agrif.bg.ac.rs/handle/123456789/5816 | |
dc.description.abstract | The 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. | sr |
dc.language.iso | en | sr |
dc.publisher | Elsevier Masson s.r.l. | sr |
dc.relation | info:eu-repo/grantAgreement/MESTD/inst-2020/200053/RS// | sr |
dc.relation | info:eu-repo/grantAgreement/MESTD/inst-2020/200116/RS// | sr |
dc.relation.isreferencedby | http://aspace.agrif.bg.ac.rs/handle/123456789/5997 | |
dc.rights | restrictedAccess | sr |
dc.source | Plant Physiology and Biochemistry | sr |
dc.subject | Cell wall polymers | sr |
dc.subject | Peroxidases | sr |
dc.subject | Phenolics | sr |
dc.subject | Picea omorika | sr |
dc.subject | Polyphenol oxidases | sr |
dc.subject | UV radiation | sr |
dc.title | Cell wall response to UV radiation in needles of Picea omorika | sr |
dc.type | article | sr |
dc.rights.license | ARR | sr |
dc.citation.epage | 190 | |
dc.citation.rank | M21 | |
dc.citation.spage | 176 | |
dc.citation.volume | 161 | |
dc.description.other | Supplementary material: [http://aspace.agrif.bg.ac.rs/handle/123456789/5997] | |
dc.identifier.doi | 10.1016/j.plaphy.2021.02.007 | |
dc.identifier.scopus | 2-s2.0-85101082745 | |
dc.identifier.wos | 000637955100018 | |
dc.type.version | publishedVersion | sr |