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UV-B Exposure of Indoor-Grown Picea abies Seedlings Causes an Epigenetic Effect and Selective Emission of Terpenes
KTH, School of Biotechnology (BIO). (Biokemi)ORCID iD: 0000-0002-5368-4296
KTH, School of Biotechnology (BIO). KTH, School of Chemical Science and Engineering (CHE), Chemistry. (Biokemi)
Dalarna University.
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
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2013 (English)In: Zeitschrift für Naturforschung C - A Journal of Biosciences, ISSN 0939-5075, E-ISSN 1865-7125, Vol. 68, no 3-4, 139-147 p.Article in journal (Refereed) Published
Abstract [en]

Terpenoids  are  involved  in  various  defensive  functions  in  plants,  especially  conifers.  Epi-genetic  mechanisms,  for  example  DNA  methylation,  can  infl uence  plant  defence  systems. The purpose of the present study was to investigate the infl uence of UV-B exposure on the release  of  terpenoids  from  spruce  seedlings  and  on  needle  DNA  methylation.  Ten-week-old  seedlings  grown  indoors  were  exposed  to  UV-B  radiation  during  4 h,  and  the  volatile compounds  emitted  from  the  seedlings  were  analysed.  Analysis  of  the  volatiles  1,  3,  and 22 d after this UV-B exposure showed that bornyl acetate, borneol, myrcene, and limonene contents increased during the fi rst 3 days, while at day 22 the level of emission had returned to the control level. UV-B exposure decreased the level of DNA methylation in needles of young  seedlings,  refl ected  in  methylation  changes  in  CCGG  sequences.  Exposure  of  young seedlings  to  UV-B  radiation  might  be  a  way  to  potentiate  the  general  defensive  capacity, improving their ability to survive in outdoor conditions. UV-B-induced defence is discussed in the light of epigenetic mechanisms.

Place, publisher, year, edition, pages
Tübingen: Verlag der Zeitschrift für Naturforschung , 2013. Vol. 68, no 3-4, 139-147 p.
Keyword [en]
Ultraviolet radiation, spruce, plant defense, DNA methylation, volatiles, terpenes
National Category
Natural Sciences Forest Science
Identifiers
URN: urn:nbn:se:kth:diva-121322ISI: 000322090700010PubMedID: 23819310Scopus ID: 2-s2.0-84878776812OAI: oai:DiVA.org:kth-121322DiVA: diva2:618371
Note

QC 20130823

Available from: 2013-04-26 Created: 2013-04-26 Last updated: 2017-12-06Bibliographically approved

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Ohlsson, Anna B.Segerfeldt, PatrikBorg-Karlsson, Anna-Karin M.Berglund, Torkel
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